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Enhanced Pyroelectric Response in Quenched BNT-Based Lead-Free Ferroelectrics for Uncooled Infrared Detection

Advanced Functional Materials 2025年

作者： Shen, Meng Zhang, Xian Cen, Fangjie Zhang, Qingfeng Zhang, Haibo Zhang, Guangzu Jiang, Shenglin Chen, Yong Hu, Yongming Yao, Kui Hubei Key Laboratory of Micro-Nanoelectronic Materials and Devices Key Laboratory of Intelligent Sensing System and Security of Ministry of Education and School of Microelectronics Hubei University Wuhan430062 China School of Integrated Circuits Engineering Research Center for Functional Ceramics MOE and Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan430074 China Ministry of Education Key Laboratory of Green Preparation and Application for Functional Materials Hubei Key Laboratory of Micro-Nanoelectronic Materials and Devices Hubei Key Laboratory of Polymer Materials School of Materials Science & Engineering Hubei University Wuhan430062 China School of Materials Science and Engineering State Key Laboratory of Material Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan430074 China Singapore138634 Singapore

Excellent pyroelectric performance in environmentally friendly lead-free ferroelectrics is highly demanded for uncooled infrared detector. However, the trade-off between room temperature pyroelectric coefficient (proom) and depolarization temperature (Td) remains a major challenge of lead-free ferroelectrics for their device applications. Herein, a superior proom of 13.8 × 10−4 C m−2 K−1 with high Td of 155 °C is achieved in quenched BNT-Fe/Mn-NBT sample. Oxygen vacancy engineering is proposed to solve the constraint between proom and Td in BNT-based ceramics. The local A/B site displacement and oxygen vacancies are constructed in the BNT-Fe/Mn-NBT perovskite structure by quenching treatment, resulting in larger lattice distortion and superior proom. Meanwhile, defect-induced inhomogeneous random field compensates the ferroelectric depolarization field and down-shifts the free energy well, maintaining high Td. The resulting pyroelectric infrared detector made from the high-performance quenched BNT-Fe/Mn-NBT generates the voltage responsivity of 5906 V W−1 and specific detection rate of 1.8 × 108 cm Hz1/2 W−1, which is comparable to the commercial RD-624 type PZT-based pyroelectric infrared detector. © 2025 Wiley-VCH GmbH.

关键词： Perovskite

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Yoda1-Loaded Microfibrous Scaffolds Accelerate Osteogenesis through Piezo1-F-Actin Pathway-Mediated YAP Nuclear Localization and Functionalization

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ACS Applied Materials and Interfaces 2025年第21期17卷 30559-30572页

作者： Liu, Junzheng Meng, Zijie Song, Jidong Yu, Jiaming Guo, Qin Zhang, Jiahao Wang, Shuo Wang, Yulin Qiu, Zhennan Zhang, Xinyi He, Jiankang Wang, Wei Comprehensive Orthopedics Department the Second Affiliated Hospital of Xi’an Jiaotong University Shaanxi Xi’an 710004 China Frontier Institute of Science and Technology Xi’an Jiaotong University Xi’an 710049 China State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong University Xi’an 710049 China Shaanxi University of Chinese Medicine Shaanxi Xianyang 712046 China National Medical Products Administration (NMPA) Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices Xi’an Jiaotong University Xi’an 710049 China State Industry-Education Integration Center for Medical Innovations Xi’an Jiaotong University Xi’an 710049 China

Yoda1 has been recognized as an effective pharmacological intervention for the treatment of critical bone defects. However, the local delivery strategy of Yoda1 is uncommon, and the underlying mechanism through which Yoda1 enhances osteogenesis has been poorly investigated. Here, we propose utilizing electrohydrodynamic (EHD)-printed microfibrous scaffolds as a drug carrier for loading Yoda1 through a polydopamine (PDA) coating, and the synthetic mechanisms for enhancing bone regeneration are explored. Yoda1 was successfully loaded on the surface of the EHD-printed microfibrous scaffolds with the assistance of PDA. The results of in vitro experiments demonstrated that the Yoda1-loaded microfibrous scaffold group exhibited a more than 2-fold increase in COL-I protein levels compared to the control group. Additionally, the expression levels of osteogenic indicators such as ALP, Runx2, and OCN genes were significantly increased by 2-4-fold compared to those in the control group. We revealed that Yoda1 can effectively activate the Piezo1-F-actin pathway, thereby facilitating YAP nucleation and promoting lysine histone acetylation. Consequently, this mechanism enhanced the functionality of YAP nucleation and upregulated the expression of COL-I. Moreover, when implanted in vivo, the Yoda1-loaded microfibrous scaffold group could promote macrophage M2 polarization, thereby enhancing bone regeneration at defect sites. It is believed that the localized release of Yoda1 via EHD-printed PCL scaffolds might represent a promising strategy for the clinically precise treatment of bone defects. © 2025 The Authors. Published by American Chemical Society.

关键词： bone regeneration electrohydrodynamic printing osteogenesis Piezo1 YAP Yoda1

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The in-situ parasitic microstructure interface and defect formation mechanism in (010) β-Ga_(2)O_(3) epitaxial film via MOCVD

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Science China Materials 2025年第2期68卷 515-522页

作者： Xianqiang Song Yunlong He Zhan Wang Xiaoli Lu Jing Sun Ying Zhou Yang Liu Jiatong Fan Xiaoning He Xuefeng Zheng Xiaohua Ma Yue Hao State Key Laboratory of Wide-Bandgap Semiconductor Devices and Integrated Technology National Engineering Research Center of Wide Band-Gap SemiconductorSchool of MicroelectronicsXidian UniversityXi’an 710071China School of Electronic Engineering Xi’an University of Posts&TelecommunicationsXi’an 710121China Guangzhou Institute of Technology Xidian UniversityGuangzhou 510555China Shaanxi Semiconductor Industry Association Xi’an 710065China

In this study, a typical hillock surface defect wasdiscovered in (010) β-Ga_(2)O_(3) thin films grown by metal-organicchemical vapor deposition (MOCVD), and the morphologyand structure were systematically investigated. The observeddefects exhibit a polygonal shape with a ridge-like hillockalong the [001] direction. Transmission electron microscopy(TEM) microanalysis reveals that polygonal hillock defects arecomposed of twin grains forming an inverted pyramid shapeembedded in the epitaxial layer, which exhibits twofold rotational symmetry along the [100] crystal direction. Theboundary between the defective and perfect lattices appearsband-like, characterized by complex faults, with structuralrelationships between the twin region and the matrix identified as [001]matrix||[010]Defect and {−310}matrix||{−201}Defect. Theorigin of surface defects in the (010) β-Ga_(2)O_(3) homoepitaxiallayers could be attributed not only to the extent of substratedefects but also to epitaxial process conditions. The definitiveexplanation is the localized aggregation of gallium atoms/oxygen vacancies during the growth process, as evidenced byenergy-dispersive X-ray (EDX) analysis and optimized experiments. This work provides brand-new perspectives intothe study of defects in β-Ga_(2)O_(3) epitaxial films, which furtheradvances the application of Ga_(2)O_(3) materials in power devicetechnologies.

关键词： β-Ga_(2)O_(3) MOCVD surface defect

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Recent progress on surface chemistryⅡ:Property and characterization

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Chinese Chemical Letters 2025年第1期36卷 8-57页

作者： Xin Li Zhen Xu Donglei Bu Jinming Cai Huamei Chen Qi Chen Ting Chen Fang Cheng Lifeng Chi Wenjie Dong Zhenchao Dong Shixuan Du Qitang Fan Xing Fan Qiang Fu Song Gao Jing Guo Weijun Guo Yang He Shimin Hou Ying Jiang Huihui Kong Baojun Li Dengyuan Li Jie Li Qing Li Ruoning Li Shuying Li Yuxuan Lin Mengxi Liu Peinian Liu Yanyan Liu Jingtao Lü Chuanxu Ma Haoyang Pan JinLiang Pan Minghu Pan Xiaohui Qiu Ziyong Shen Qiang Sun Shijing Tan Bing Wang Dong Wang Li Wang Lili Wang Tao Wang Xiang Wang Xingyue Wang Xueyan Wang Yansong Wang Yu Wang Kai Wu Wei Xu Na Xue Linghao Yan Fan Yang Zhiyong Yang Chi Zhang Xue Zhang Yang Zhang Yao Zhang Xiong Zhou Junfa Zhu Yajie Zhang Feixue Gao Yongfeng Wang Center for Carbon-based Electronics and Key Laboratory for the Physics and Chemistry of Nanodevices School of ElectronicsPeking UniversityBeijing 100871China Spin-X Institute School of MicroelectronicsSouth China University of TechnologyGuangzhou 511442China School of Materials and Energy Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage DevicesGuangdong University of TechnologyGuangzhou 510006China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China i-Lab CAS Key Laboratory of Nanophotonic Materials and DevicesSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing 210023China Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Institute of Physics&University of Chinese Academy of Sciences Beijing 100190China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemistry Beijing Normal UniversityBeijing 100875China Beijing National Laboratory for Molecular Sciences(BNLMS) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China School

Surface with well-defined components and structures possesses unique electronic,magnetic,optical and chemical *** a result,surface chemistry research plays a crucial role in various fields such as catalysis,energy,materials,quantum,and *** science mainly investigates the correspondence between surface property and *** probe microscopy(SPM)techniques are important tools to characterize surface properties because of the capability of atomic-scale imaging,spectroscopy and manipulation at the single-atom *** this review,we summarize recent advances in surface electronic,magnetic and optical properties characterized mainly by SPM-based *** focus on elucidating theπ-magnetism in graphene-based nanostructures,construction of spin qubits on surfaces,topology properties of surface organic structures,STM-based light emission,tip-enhanced Raman spectroscopy and integration of machine learning in SPM studies.

关键词： Surface chemistry Scanning probe microscopy π-Magnetism Spin qubits Tip-enhanced Raman spectroscopy

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Synergistic surfactant-controlled optimization and film passivation toward efficient and stable inverted Planar perovskite modules

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Chemical Engineering Journal 2025年 511卷

作者： Zhou, Long Du, Yuanbo Zhang, Jiaojiao Feng, Xinyuan Chen, Dazheng Zhu, Weidong Xi, He Zhang, Jincheng Zhang, Chunfu Hao, Yue Shaanxi Key Laboratory of High-Orbits-Electron Materials and Protection Technology for Aerospace School of Advance Materials and Nanotechnology Xidian University 266 Xinglong Section of Xifeng Road Xi'an710126 China National Key Laboratory of Wide Bandgap Semiconductor Devices and Integrated Technology School of Microelectronics Xidian University 2 South Taibai Road Xi'an710071 China

The complex fluid dynamics and inferior crystallinity of perovskite films with the blade-coated methods have limited the development of large-area perovskite modules. Herein, we introduce a surfactant dodecylammonium bromide (DDABr) to modify the perovskite ink drying dynamics and increase the adhesion of perovskite precursor to the hydrophobic Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) layer. The surfactant DDABr could orchestrate controlled crystal growth and enhance the grain size to suppress the defects that appeared at the grain boundary. Apart from the high film quality, the perovskite films with DDABr additive exhibite better energy alignment with PTAA to achieve effective charge transport. More important, the hydrophobic group of the surfactant DDABr could be self-assembled on the film surface pointing to air to improve the film stability. As a result, the champion device with DDABr dopant exhibits a higher efficiency of 24.28 % with an ultra-high FF of 86 %. Furthermore, extending this strategy to the large-area perovskite modules yields a remarkable efficiency of 19.8 % with an aperture area of 13.18 cm2 and achieves 21 × 10.5 cm2 based perovskite modules with a PCE of 15.6 %. Our work provides an effective approach to producing efficient perovskite modules with commercial size, heralding a pathway toward excellent stability. © 2025

关键词： Grain boundaries

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Highest Solar-to-Hydrogen Conversion Efficiency in Cu₂ZnSnS₄ Photocathodes and Its Directly Unbiased Solar Seawater Splitting

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Nano-Micro Letters 2025年第1期17卷 1-19页

作者： Abbas, Muhammad Chen, Shuo Li, Zhidong Ishaq, Muhammad Zheng, Zhuanghao Hu, Juguang Su, Zhenghua Li, Yanbo Ding, Liming Liang, Guangxing Institute of Thin Film Physics and Applications Shenzhen Key Laboratory of Advanced Thin Films and Applications Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province State Key Laboratory of Radio Frequency Heterogeneous Integration College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu 610054 China School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China

Abstract: Despite being an excellent candidate for a photocathode, Cu2ZnSnS4 (CZTS) performance is limited by suboptimal bulk and interfacial charge carrier dynamics. In this work, we introduce a facile and versatile ... 详细信息

Abstract: Despite being an excellent candidate for a photocathode, Cu₂ZnSnS₄ (CZTS) performance is limited by suboptimal bulk and interfacial charge carrier dynamics. In this work, we introduce a facile and versatile CZTS precursor seed layer engineering technique, which significantly enhances crystal growth and mitigates detrimental defects in the post-sulfurized CZTS light-absorbing films. This effective optimization of defects and charge carrier dynamics results in a highly efficient CZTS/CdS/TiO₂/Pt thin-film photocathode, achieving a record half-cell solar-to-hydrogen (HC-STH) conversion efficiency of 9.91%. Additionally, the photocathode exhibits a highest photocurrent density (J_ph) of 29.44 mA cm⁻² (at 0 V_RHE) and favorable onset potential (V_on) of 0.73 V_RHE. Furthermore, our CTZS photocathode demonstrates a remarkable J_ph of 16.54 mA cm⁻² and HC-STH efficiency of 2.56% in natural seawater, followed by an impressive unbiased STH efficiency of 2.20% in a CZTS-BiVO₄ tandem cell. The scalability of this approach is underscored by the successful fabrication of a 4 × 4 cm² module, highlighting its significant potential for practical, unbiased in situ solar seawater splitting applications. (Figure presented.) © The Author(s) 2025.;A novel approach, precursor seed layer engineering, is applied to prepare Cu₂ZnSnS₄ (CZTS) light-absorbing films using the solution-processed spin-coating method. Mo/CZTS/CdS/TiO₂/Pt photocathode effectively mitigates defects in CZTS light absorber and the CZTS/CdS heterojunction interface, optimizing charge carrier dynamics. Record photoelectrochemical performance including half-cell solar-to-hydrogen (HC-STH) efficiency of 9.91%, photocurrent density of 29.44 mA cm⁻² at 0 V_RHE in 0.5 M H₂SO₄ electrolyte, and STH efficiency of 2.20%

关键词： Charge transfer dynamics Cu2ZnSnS4 Precursor seed layer engineering Seawater splitting Solar-to-hydrogen conversion

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Machine learning-accelerated discovery of polyimide derivatives for high-temperature electrostatic energy storage

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Energy Storage Materials 2025年 78卷

作者： Wan, Chao-Fan Shen, Zhong-Hui Jiang, Jian-Yong Shen, Jie Shen, Yang Nan, Ce-Wen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices Wuhan University of Technology Wuhan430070 China School of Materials and Microelectronics Wuhan University of Technology Wuhan430070 China Wuzhen Laboratory Tongxiang314500 China Longzhong Laboratory Xiangyang441022 China School of Materials Science and Engineering State Key Lab of New Ceramics and Fine Processing Tsinghua University Beijing 100084 China

Molecular engineering of polyimide (PI) has been an effective method for achieving high-performance polymer dielectrics with both good energy storage capability and enhanced thermal stability. However, the rational design of PI derivatives on demand remains a great challenge due to the complex and nonlinear structure-property relationships. To address this challenge, we developed an integrated framework that combines theoretical calculations, advanced molecular descriptors, and machine learning models to study the effect of molecular structures on five key properties of energy gap (Eg), lowest unoccupied molecular orbital (LUMO), dielectric constant (Dk), fractional free volume (FFV) and glass transition temperature (Tg). By employing Artificial Neural Network (ANN), the framework captured nonlinear dependencies between molecular structures and five properties, achieving the prediction accuracy of R2 > 0.90, far surpassing traditional linear models. Using a multi-objective optimization strategy to screen over 200,000 polyimide derivatives, eight optimal molecules with superior properties (e.g., Eg > 4.0 eV, Tg > 300 °C, and Dk > 3.3) were discovered with great potential for applications in high-temperature electrostatic energy storage. This study provides a robust, data-driven approach for multi-property optimization, bridging theoretical insights with machine learning to accelerate the design of advanced polymer dielectrics. © 2025

关键词： Molecular orbitals

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Understanding the effect of rare-earth doping in ABO3 ferroelectrics on capacitive energy storage

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Journal of the European Ceramic Society 2025年第14期45卷

作者： Duan, Yu-Lin Wang, Jian Shen, Zhong-Hui Zhou, Meng-Jun Jiang, Jian-Yong Liu, Han-Xing Nan, Ce-Wen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices Wuhan University of Technology Wuhan430070 China School of Materials and Microelectronics Wuhan University of Technology Wuhan430070 China Wuzhen Laboratory Tongxiang314500 China School of Materials Science and Engineering State Key Lab of New Ceramics and Fine Processing Tsinghua University Beijing100084 China

Rare-earth doping, even in trace amounts, can significantly regulate the energy storage performance of ferroelectric materials by synergistically adjusting microscopic behaviors such as crystal structure and energy bands. However, understanding the mechanisms by which different rare-earth elements influence the energy storage performance such as polarization and breakdown remains a major challenge. To address this, we use density functional theory to systematically investigate the effect of rare-earth doping on the microscopic ferroelectric behavior in three ABO3 perovskite ferroelectrics by substituting A-site or B-site ions with 15 types of rare-earth ions. The results show that when introducing rare-earth ions, lattice structure and electronic state distribution can be rebuilt due to strong volume effect and hybridization, thereby altering the ion displacement polarization, reversal energy barrier, and energy gap. Notably, their effects highly depend on the occupancy of rare-earth ions on the A-site or B-site. For A-site doping, a decrease in the ionic radius of rare-earth ions generally leads to increases in the c/a ratio, polarization strength, reversal energy barrier, and energy gap, whereas B-site doping shows the opposite trends. This work reveals the underlying mechanisms of rare-earth doping on affecting the energy storage performance and provides important theoretical guidance for engineering rare-earth doping in perovskite ferroelectrics. © 2025 Elsevier Ltd

关键词： Crystal lattices

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Microcomb-driven photonic chip for solving partial differential equations

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Advanced Photonics 2025年第1期7卷 62-73页

作者： Hongyi Yuan Zhuochen Du Huixin Qi Guoxiang Si Cuicui Lu Yan Yang Ze Wang Bo Ni Yufei Wang Qi-Fan Yang Xiaoyong Hu Qihuang Gong Beijing Institute of Technology School of PhysicsCenter for Interdisciplinary Science of Optical Quantum and NEMS IntegrationBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic SystemsKey Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of EducationBeijingChina Beijing Academy of Quantum Information Sciences Peking UniversityNano-optoelectronics Frontier Center of Ministry of EducationCollaborative Innovation Center of Quantum MatterState Key Laboratory for Mesoscopic Physics&Department of PhysicsBeijingChina Chinese Academy of Sciences Institute of MicroelectronicsBeijingChina Peking University Yangtze Delta Institute of Optoelectronics NantongChina Shanxi University Collaborative Innovation Center of Extreme OpticsTaiyuanChina Hefei National Laboratory HefeiChina

With the development of the big data era,the need for computation power is dramatically growing,especially for solving partial differential equations(PDEs),because PDEs are often used to describe complex systems and phenomena in both science and ***,it is still a great challenge for on-chip photonic solving of time-evolving PDEs because of the difficulties in big coefficient matrix photonic computing,high accuracy,and error *** overcome these challenges by realizing a microcomb-driven photonic chip and introducing time-division multiplexing and matrix partition techniques into PDE photonic solving,which can solve PDEs with a large coefficient matrix on a photonic chip with a limited *** PDEs,including the heat equation with the first order of time derivative,the wave equation with the second order of time derivative,and the nonlinear Burgers equation,are solved with an accuracy of up to 97%.Furthermore,the parallel solving of the Poisson equation and Laplace's equation is demonstrated experimentally on a single chip,with an accuracy of 95.9%and 95.8%,*** offer a powerful photonic platform for solving PDEs,which takes a step forward in the application of photonic chips in mathematical problems and will promote the development of on-chip photonic computing.

关键词： photonic computing silicon photonics partial differential equations

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Self-constrained octahedral distortion for high-performance quasi-2D blue perovskite light-emitting diodes

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Chemical Engineering Journal 2025年 515卷

作者： Zhang, Zhiqing Zhuang, Guoliang He, Hangyu Liu, Siyang Li, Shiguo Li, Junzi He, Tingchao Ye, Fanghao Fan, Shuting Li, Guijun Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China School of Microelectronics Shenzhen Institute of Information Technology Shenzhen518172 China

The soft nature of perovskite lattices enables precise modulation of crystal structures through A-site cation doping to tailor electronic band structures and carrier dynamics. However, there remains a lack of lattice distortion control methods capable of stabilizing octahedral distortion levels without inducing excessive lattice deformation as doping concentrations increase. This study systematically investigates the effects of A-site cations with varying radii on lattice distortion when incorporated into quasi-2D blue perovskite lattices. It was found that smaller ethylamine (EA) cations lead to uncontrollable lattice strain, while larger triethylamine (TA) cations fail to effectively regulate lattice distortion. In contrast, diethylamine (DA) cations induce self-constrained lattice strain independent of cation concentration. This self-constrained lattice tuning approach optimizes optical performance by significantly enhancing radiative recombination efficiency. Consequently, blue perovskite light-emitting diodes (PeLEDs) were successfully fabricated, achieving a record external quantum efficiency (EQE) of 14.15%. The self-constrained strategy offers substantial design flexibility for developing high-performance quasi-2D blue PeLEDs. © 2025 Elsevier B.V.

关键词： Crystal lattices

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