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nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2025

作者： Lin, Yen-Ting Hsieh, Jui-Ting Tsai, Meng-Lin Yang, Chan-Shan Institute and Undergraduate Program of Electro-Optical Engineering National Taiwan Normal University Taipei Taiwan Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei Taiwan Micro/Nano Device Inspection and Research Center National Taiwan Normal University Taiwan Applied High Entropy Technology Center National Cheng Kung University Tainan Taiwan

ISBN: (纸本)9781510684522

With the advancement of the global economy and technology, energy demand has become an urgent issue, prompting heightened attention to environmental friendliness and sustainable development. Solar energy, as a significant renewable resource, has garnered widespread attention despite facing challenges in conversion efficiency. Perovskite materials, due to their cubic crystal structure exhibiting excellent optoelectronic properties and a broad spectrum response, along with low manufacturing costs, have emerged as a recent research focus. These materials have shown remarkable potential in solar cells, light-emitting devices, and photodetectors, offering high efficiency, tunable bandgaps, and scalable fabrication processes. This study enhances the optical performance and stability of perovskite quantum dots through femtosecond pulse laser annealing technology, thereby improving their quantum yield. Advanced optical systems are employed for analysis, fully leveraging the advantages of perovskite materials in photovoltaic conversion. This research not only provides foundational solutions to pressing energy challenges but also promotes the transition of society towards cleaner and more sustainable energy technologies. Moreover, it contributes to the advancement of more efficient solar technologies, promoting innovation and development in future energy sources, and effectively reducing dependence on non-renewable energy. This is of significant importance for environmental protection, ensuring a better living environment for the future generations. © 2025 SPIE.

关键词： nanocrystals

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Implementation and Evaluation of 0.6 µm CMOS Complex RCPF for Accurate Frequency Response Measurement

IEEJ Transactions on Electronics, Information and Systems

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IEEJ Transactions on Electronics, Information and Systems 2025年第1期145卷 25-37页

作者： Sato, Lina Fukagawa, Kanta Shouno, Kazuhiro Tanimoto, Hiroshi Muto, Cosy Moriyama, Seijiro Takahashi, Chikau Yoshino, Michitaka Graduate School of Science and Technology Degree Programs in Systems and Information Engineering Master’s Program in Computer Science University of Tsukuba Japan Division of Information Engineering University of Tsukuba 1-1-1 Tennoudai Ibaraki Tsukuba305-8573 Japan Kitami Institute of Technology 165 Koen-cho Hokkaido Kitami090-8507 Japan Faculty of Education Nagasaki University 1-14 Bunkyo-machi Nagasaki852-8521 Japan Anagix Corporation 3-22-27 Numama Kanagawa Zushi249-0004 Japan Takamori Corporation Japan Research Center for Micro-Nano Technology Hosei University 3-11-15 Midori-cho Koganei Tokyo184-0003 Japan

This paper describes the implementation and evaluation of an RC polyphase filter (RCPF) and circuitry for measuring its frequency characteristics. The integrated circuit is fabricated on a 0.6 µm CMOS process and its supply voltage is 5 V. The integrated circuit includes a filter under test (FUT), a four-phase square wave generator, several analog switches and differential amplifiers to amplify the high-impedance signals of the RCPF. This FUT is a third-order complex RCPF whose passband is 8 − 40 MHz. This paper describes the design of these circuits in detail. This integrated circuit can select two measurement methods by means of external control signals. The first method uses a four-phase square wave. The frequency characteristics are measured by using an on-chip four-phase square wave generator driven by an external clock generator and by a spectrum analyzer tuned to the fundamental frequency. The second method uses an external network analyzer. Furthermore, this integrated circuit is equipped with a calibration circuit to measure the frequency characteristics of the circuitry except FUT by passing through the input / output signals of the FUT. As a result, the frequency characteristics of the FUT itself can be accurately measured. The effectiveness is confirmed through evaluation of the fabricated integrated circuit. © 2025 The Institute of Electrical Engineers of Japan.

关键词： Differential amplifiers

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Terahertz characterization of functional composite material based on ABS mixed with ceramic powder

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Optical Materials Express 2023年第9期13卷 2622-2632页

作者： Peng, Hsin Y.I. Wei, Y.I.-A.N. Lin, K.A.O.-C.H.I. Hsu, S.H.E.N.-F.U. Chen, J.Y.H.-C.H.E.R.N. Cheng, C.H.I.N.-P.A.O. Yang, C.H.A.N.-S.H.A.N. Department of Mechatronic Engineering National Taiwan Normal University Taipei 106010 Taiwan Institute and Undergraduate Program of Electro-Optical Engineering National Taiwan Normal University Taipei 11677 Taiwan Center for Measurement Standards Industrial Technology Research Institute Hsinchu 31040 Taiwan Advanced ACEBiotek Co. Ltd. Hsinchu 30261 Taiwan Micro/Nano Device Inspection and Research Center National Taiwan Normal University Taipei 106 Taiwan

Terahertz (THz) radiation is especially the frequency band that the developers of sixth-generation wireless communication networks aim to exploit. Thus, the research and development of relevant components have been an important issue. Studies have shown that ceramic materials demonstrate the properties of low optical loss and high refractive index when subjected to THz radiation. Furthermore, when a ceramic material is mixed into a polymeric material, it can effectively improve the latter’s mechanical strength. Therefore, in this study, we conducted heat treatment on the powders of four ceramic materials: Al2O3, SiO2, ZrSiO4, and quartz. Next, we respectively mixed each powder of the ceramic materials into each powder of acrylonitrile butadiene styrene (ABS). Then, we measured all the mixtures’ optic properties under THz radiation by observing their X-ray diffraction patterns. Measurement results indicated that SiO2 had a phase transition when it was calcined to 1100°C, and its optical coefficient also changed with the phase transition. After ABS was mixed with a ceramic material, the mixture’s effective refractive index increased as the mixture was subjected to THz radiation. Moreover, after ABS was mixed with Al2O3, quartz, heat-treated Al₂O₃, heat-treated quartz, and heat-treated SiO₂, the mixtures’ effective refractive index increased, and their absorption coefficients decreased. Therefore, mixing a specific ceramic material into ABS, a common polymer, can not only improve the mechanical performance of ABS but also give ABS fine optical properties such as an increased effective refractive index and a decreased absorption coefficient under THz radiation. © 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Absorption coefficient Aluminum oxide Composite materials Effective medium theory Effective refractive index Refractive index

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Room-temperature synthesis of high-efficiency and high-stability near-infrared FAPbI3 quantum dots passivated with zwitterionic short-chain amino acid ligands

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Journal of Luminescence 2025年 284卷

作者： Liao, Wan Hsuan Tseng, Yu Ting Chu, Sheng-Yuan Program on Integrated Circuit Design Academy of Innovative Semiconductor and Sustainable Manufacturing National Cheng Kung University Tainan Taiwan Department of Electrical Engineering National Cheng Kung University Tainan70101 Taiwan Department of Electrical Engineering National Cheng Kung University Tainan Taiwan Center for Micro/Nano Science and Technology National Cheng Kung University Tainan701 Taiwan

In the contemporary era of rapid technological advancement, light-emitting diode (LED) technology has become indispensable in many fields, including lighting, display, and communication. Nevertheless, developing efficient light sources in the near-infrared (NIR) region presents a significant challenge. Perovskite materials have garnered considerable interest in this spectral range due to their exemplary optical properties. An efficient perovskite near-infrared light source was synthesized at room temperature by utilizing the small molecule amino acid D-4-tert-butylphenylalanine (D4TBP). This resulted in successfully synthesizing a highly stable D4TBP-FAPbI3 near-infrared perovskite quantum dot. The photoluminescence quantum yield (PLQY) increased from 40 % to 68 %, and the film's contact angle improved from 65.36° to 93.87°, significantly enhancing its environmental stability. © 2025

关键词： Luminescent devices

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Development of terahertz metamaterial gas sensor utilizing novel composite membrane ZnO/V-MOF for nitrogen dioxide detection 17

Development of terahertz metamaterial gas sensor utilizing n...

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Terahertz, RF, Millimeter, and Submillimeter-Wave technology and Applications XVII 2024

作者： Chen, You-Jen Wu, Pei-Jung Hsieh, Cho-Fan Yang, Chii-Rong Yang, Chan-Shan Institute and Undergraduate Program of Electro-Optical Engineering National Taiwan Normal Univ Wenshan Dist. Taipei City116 Taiwan Green Energy Testing and Certification Division Center for Measurement Standards Industrial Technology Research Institute Hsinchu County310401 Taiwan Dept. of Mechatronic Engineering National Taiwan Normal Univ. Daan Dist. Taipei City106 Taiwan Micro/Nano Device Inspection and Research Center National Taiwan Normal University Taipei106 Taiwan Center National Cheng Kung University Tainan70101 Taiwan

ISBN: (纸本)9781510670303

Recently, the combination of gas sensors and metamaterials has emerged as a popular research area. However, traditional gas sensors typically rely on electrochemical methods for detection, requiring operation in high-temperature environments and presenting potential explosion risks. To address these challenges, this study utilizes terahertz low-energy photons with high transmission and broad bandwidth as a detection source, enabling devices to operate under normal conditions at room temperature. This approach aims to enable comprehensive material information retrieval while preventing combustion or explosions during interaction with the tested substance. Zinc oxide (ZnO) has been widely utilized in gas sensors, with the technology reaching a certain level of advancement. Additionally, our focus lies on the study of metal-organic framework (MOF) materials, which offer significant advantages in gas sensing applications. Key characteristics of MOFs include a large surface area, high porosity, and unique surface properties. These materials can be fabricated using various metals to create corresponding gas sensing films, and their properties can be further tailored through modification with different polar molecules and the introduction of other catalysts. While there is extensive research on MOFs based on vanadium as a framework, there is limited literature on their gas sensing applications, underscoring their research value. Nitrogen dioxide (NO2) is a volatile, pungent, odorous, and toxic gas that poses a fatal threat to both humans and the environment. Therefore, gas sensing technology for NO2 is of utmost importance. In this regard, our research is dedicated to the development of optical gas sensors using novel composite materials. nanostructures of ZnO and V-MOF are prepared respectively, and these composite materials are integrated with metamaterials for the detection of NO2 gas. © 2024 SPIE.

关键词： Zinc oxide

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Enhancing the absorption figure of merit on solution-based CuO thin films by Ni doping

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Optical Materials: X 2023年 19卷

作者： Loi, Nguyen Van Mai, La Thi Ngoc Luong, Nguyen Hoang Nguyen Quoc Trinh, Bui Faculty of Physics University of Science Vietnam National University Hanoi 334 Nguyen Trai Thanh Xuan Hanoi Viet Nam Nanotechnology Program Faculty of Advanced Technology and Engineering Vietnam Japan University Vietnam National University Hanoi Luu Huu Phuoc Nam Tu Liem Hanoi Viet Nam Nano and Energy Center University of Science Vietnam National University Hanoi 334 Nguyen Trai Thanh Xuan Hanoi Viet Nam Key Laboratory for Micro-Nano Technology University of Engineering and Technology Vietnam National University Hanoi 144 Xuan Thuy Cau Giay Hanoi Viet Nam

We evaluated an absorbance effectiveness on the solar spectrum using an absorption figure of merit (a-FOM) for the conducting thin films. In particular, Ni-doped and un-doped CuO thin films were deposited by a facile and sustainable solution-processed synthesis, whose Ni doping concentration was varied to be 0.2, 0.6, 1, 2, 3, 4 wt%. We observed a change of smooth surface to an appearance of nanoparticles by Ni doping, which supported to form of a plasmonic mechanism for improving the light capture and retention. The absorption of long wavelengths was improved and extended to the near-infrared range. That is, the bandgap energy decreased from 2.10 to 1.88 eV with Ni doping. Also, we found that the absorption length decreased from 99.93 nm to 63.80 nm as the Ni doping increased. In addition, the CuO-based film with 4 wt% Ni doping showed a maximal value of a-FOM as high as 30.88 Ω−1cm−1, corresponding to a resistance of 2.07 MΩ/sq and an absorption length of 63.80 nm. Our finding suggested that Ni-doped CuO thin films can be considered as an excellent selection of absorbent conductive oxide layers for application in optoelectronic devices and solar cell systems. © 2023 The Author(s)

关键词： Copper oxides

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力致发光驱动的咬合控制人机交互界面

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Science Bulletin 2023年第6期68卷 559-561,M0003页

作者：王春枫胡鸿杰朱德亮潘曹峰 College of Materials Science and Engineering Guangdong Research Center for Interfacial Engineering of Functional MaterialsShenzhen UniversityShenzhen 518060China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 100083China Materials Science and Engineering Program University of California San DiegoLa Jolla CA 92093USA School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China

Human–machine interfaces (HMIs) enable the intuitive cognition and interaction between users and devices [1–3]. The conventional HMIs such as mouse, keyboard and touchscreen have significantly simplified the manipulations of computers and associated devices, while they suffer from bulk, big footprint and mechanical noncompliance for applications in virtual/augmented reality and Internet of Things, and more importantly, difficulties in operation for people with disabilities such as dexterity impairments or neurological conditions [4,5].

关键词：人机交互界面力致发光 enable

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Enhancing the Absorption Figure of Merit on Solution-Based Cuo Thin Films by Ni Doping

SSRN

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SSRN 2023年

作者： Nguyen Quoc Trinh, Bui Loi, Nguyen Van Mai, La Thi Ngoc Luong, Nguyen Hoang Faculty of Physics University of Science Vietnam National University 334 Nguyen Trai Thanh Xuan Hanoi Viet Nam Nanotechnology Program Faculty of Advanced Technology and Engineering Vietnam Japan University Vietnam National University Luu Huu Phuoc Nam Tu Liem Hanoi Viet Nam Nano and Energy Center University of Science Vietnam National University 334 Nguyen Trai Thanh Xuan Hanoi Viet Nam Key Laboratory for Micro-Nano Technology University of Engineering and Technology Vietnam National University 144 Xuan Thuy Cau Giay Hanoi Viet Nam

We evaluated an absorbance effectiveness on the solar spectrum using an absorption figure of merit (a-FOM) for the conducting thin films. In particular, Ni-doped and un-doped CuO thin films were deposited by a facile and sustainable solution-processed synthesis, whose Ni doping concentration was varied to be 0.2, 0.6, 1, 2, 3, 4 wt.%. We observed a change of smooth surface to an appearance of nanoparticles by Ni doping, which supported to form of a plasmonic mechanism for improving the light capture and retention. The absorption of long wavelengths was improved and extended to the near-infrared range. That is, the bandgap energy decreased from 2.10 to 1.88 eV with Ni doping. Also, we found that the absorption length decreased from 99.93 nm to 63.80 nm as the Ni doping increased. In addition, the CuO-based film with 4 wt.% Ni doping showed a maximal value of a-FOM as high as 30.88 Ω-1cm-1, corresponding to a resistance of 2.07 MΩ/sq and an absorption length of 63.80 nm. Our finding suggested that Ni-doped CuO thin films can be considered as an excellent selection of absorbent conductive oxide layers for application in optoelectronic devices and solar cell systems. © 2023, The Authors. All rights reserved.

关键词： Copper oxides

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Beryllene, the lightest Xene

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npj 2D Materials and Applications 2023年第1期7卷 55页

作者： Chahal, Sumit Bandyopadhyay, Arkamita Yang, Chan-Shan Kumar, Prashant Department of Physics Indian Institute of Technology Patna Bihta CampusPatna-801106 India Universität Bremen Am Fallturm 1 TAB Building Bremen28359 Germany Institute and Undergraduate Program of Electro-Optical Engineering National Taiwan Normal University Taipei11677 Taiwan Micro/Nano Device Inspection and Research Center National Taiwan Normal University Taipei106 Taiwan University of Newcastle NewcastleNSW-2308 Australia

After the discovery of sp2-hybridized graphene and even lighter borophene, the scientific quest for the thinnest metallic sheets prompts the discovery of beryllene. As beryllium lacks p-electrons, the hybridization and structural evolution of beryllene in determining electronic/excitonic behaviors are scientifically interesting. Herein, we report the experimental realization of freestanding flat beryllene sheets with a lateral dimension of ~0.2–4 μm via sonochemical exfoliation. High-resolution transmission electron microscopy establishes the existence of hexagonal, square and stripe crystallographic phases. While characteristic Raman fingerprints ~451 and ~614 cm−1, and experimentally observed electrically metallic nature of beryllene (vindicated by density-functional-theory band structure calculations) establish beryllene synthesis. Room temperature magnetism in Be-G and Be-CNT hybrids (established by Raman mapping and magnetic force microscopic imaging) is an interesting finding. Beryllene was explored as a surface-enhanced Raman spectroscopy (SERS) anchor in molecular sensing, oxidation-resistant, and fire-resistant laminates. It is believed that the discovery of beryllene will lead to novel functionalities and emerging applications. © 2023, Springer Nature Limited.

关键词： High resolution transmission electron microscopy

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Hot-carrier phenomenon in perovskite solar cells under white light emitting diode

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Discover Energy 2024年第1期4卷 1-9页

作者： Umar, Akrajas Ali Alias, Nabilah Umar, Marjoni Imamora Ali Fauzia, Vivi Nurdin, Muhammad Maulidiyah, Maulidiyah Noviyanti, Atiek Rostika Zhan, Yiqiang Institute of Microengineering and Nanoelectronics Universiti Kebangsaan Malaysia UKM Bangi Malaysia Nickel Research Institute Universitas Muhammadiyah Kendari Kendari Indonesia Physics Education Program Faculty of Tarbiyah Institut Agama Islam Negeri Mahmud Yunus Batusangkar Indonesia Department of Physics Faculty of Mathematics and Natural Sciences Universitas Indonesia Jakarta Indonesia Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Halu Oleo Kendari Indonesia Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Padjadjaran Bandung Indonesia Center for Micro Nano System School of Information Science and Technology Fudan University Shanghai China

Hot-carrier solar cells offer the potential for enhanced power conversion efficiency by tapping into the kinetic energy of hot carriers generated upon sunlight absorption. This involves using specially designed materials capable of efficiently extracting and utilizing the energy of these hot carriers to produce electrical power. Here, we observed such a hot carrier effect in hexamine doped methylammonium lead triiodide perovskite solar cells when exposed to 100 mW/cm2 of 5000 K white LED light. We discovered that these perovskite solar cells exhibited remarkable power conversion efficiency, reaching up to 54.22% with the Voc (open-circuit voltage) and Jsc (short-circuit current density) values were measured at 1.10 V and 54 mA/cm2, respectively. In comparison, under similar conditions but using a solar simulator, the power conversion efficiency remained below 20%. Our results suggest that the high PCE under white LED irradiation is due to the fine resonance between the light energy and perovskite band gap energy, enabling long carrier lifetime and then allowing massive photovoltaics process. These findings highlight the alternative to achieve hot carrier’s perovskite solar cells and efficient energy generation by converting light energy into the wavelength match with the perovskite materials absorber energy band gap.

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