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Transparent conducting indium-tin-oxide(ITO) film as full front electrode in Ⅲ–Ⅴ compound solar cell

Chinese Physics B 2017年第3期26卷 495-499页

作者：代盼卢建娅谭明王青松吴渊渊季莲边历峰陆书龙杨辉 Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano- Tech and Nano-Bionics Chinese Academy of Sciences (CAS) Suzhou 215123 China

The application of transparent conducting indium-tin-oxide （ITO） film as full front electrode replacing the conven- tional bus-bar metal electrode in III-V compound GalnP solar cell was proposed. A high-quality, non-rectifying contact between ITO and 10 nm N＋-GaAs contact layer was formed, which is benefiting from a high carrier concentration of the terrilium-doped N＋-GaAs layer, up to 2×10^19 cm^-3. A good device performance of the GalnP solar cell with the ITO electrode was observed. This result indicates a great potential of transparent conducting films in the future fabrication of larger area flexible III-V solar cell.

关键词： full indium-tin-oxide （ITO） electrode specific contact resistance solar cell

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DNA Directed Plasmonic nanostructures with Designed Chirality

DNA Directed Plasmonic Nanostructures with Designed Chiralit...

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中国化学会第八届全国物理无机化学学术会议

作者： Qiangbin Wang CAS Key Laboratory of Nano-Bio Interface Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences

＜正＞Chiral plasmonic nanostructures have huge potentials for applications in negative refractive index materials, sub-wavelength optical imaging, optical polarizing and ultrasensitive *** the past years, bottom-up self assembly has been extensively used in building well-defined chiral plasmonic nanostructures, including gold nanosphere tetramers, gold nanoellipsoid dimers, gold nanosphere single

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Synthesis and Photodynamic Therapy of Porphyrin-Based Metal-Organic Framework nanoparticles

Synthesis and Photodynamic Therapy of Porphyrin-Based Metal-...

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中国化学会第五届卟啉与酞菁学术研讨会

作者： Yuewu Zhao Jine Wang Renjun Pei CAS Key Laboratory of Nano-Bio Interface Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences

Metal-organic frameworks（MOFs） have attracted wide interest as more classical porous *** good crystallinity,structural tunability,large porosity and high specific surface area of the MOFs materials have made it useful in many applications such as gas capture,photocatalytic cleavage,sensors,bioimaging and photodynamic *** the early stage,we have prepared the porphyrin-based 2D structure of MOFs nanodisks by the bottom-up method,and characterized the surface morphology and microstructure of the prepared MOFs nanodisks,confirming that the porous MOFs can be effectively applied to the electrocatalytic oxidation and sensitive detection of nitrite and exhibits good effects. Porphyrin molecules are independently distributed in the MOFs,avoiding aggregation and self-quenching excited states,can effectively improve the photosensitivity,enhance the cross-regression of energy in MOFs,increase the singlet oxygen yield,and promote its efficient diffusion. This leads people to believe that MOFs nanomaterials also have high application in photodynamic *** this paper,porphyrin-based metal-organic framework nanospheres were prepared by solvothermal *** growth mechanism was investigated and the photodynamic therapy of the tumor was studied.

关键词： Metal-organic framework nanoparticles Photodynamic therapy

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Advanced Fluorescence In Vivo Imaging:Seeing is Believing

Advanced Fluorescence In Vivo Imaging:Seeing is Believing

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The 3rd International Conference on nanomedicine of China（Chinananomedicine 2018）

作者： Qiangbin Wang CAS Key Laboratory of Nano-Bio Interface Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences

Fluorescent imaging in the second near-infrared window(NIR-Ⅱ,1.0～1.7 urn) is appealing due to minimal autofluorescence and negligible tissue scattering in this region,affording maximal penetration depth for deep tissue imaging with high feature ***,we reported a new type of NIR-Ⅱ QDs-Ag2S QDs and executed a series of in vivo detection studies by using Ag2S ***2S QDs were successfully prepared by a facile thermal-decomposition of the Ag2S *** results show that,by using Ag2S QDs,the tissue penetration length can reach 1.5 cm,and the spatial and temproal resolution of the in vivo imaging can down to 25 urn and 50 ms,respectively,which are improved several to dozens of times in comparison with those using conventional fluorescence nanoprobes in the visiable and the first near-infrared window(650-900 nm).This new imaging strategy will have wide applications in in vivo studies.

关键词： QDs Advanced Fluorescence In Vivo Imaging:Seeing is Believing

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Gram-scale synthesis of nanotherapeutic agents for CT/Tl-weighted MRI bimodal imaging guided photothermal therapy

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nano Research 2017年第9期10卷 3124-3135页

作者： Xianguang Ding Xiaoxia Hao Dongdong Fu Mengxin Zhang Tian Lan Chunyan Li Renjun Huang Zhijun Zhang Yonggang Li Qiangbin Wang Jiang Jiang Lab and Division of Nanobiomedicine CAS Key Laboratory of Nano-Bio Interface CAS Center for Excellence in NanoscienceSuzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Suzhou 215123 China Department of Radiology The First Affiliated Hospital of Soochow University Suzhou 215006 China

Theranostic nanomedicine, which uses both imaging and therapeutic components for simultaneous disease diagnosis and treatment, is expected to improve patient treatment safety and outcomes by offering a more personalized approach to medicine. However, the poor reproducibilities of nanomedicines synthesized for optimized bioavailability and their potential toxicity are impeding clinical development. Moreover, milligram-scale synthetic methods are often inconsistent when transferred to mass production. To address these challenges, a facile, room temperature, aqueous phase synthesis of nanotheranostic agents using clinically validated mesoporous silica and naturally derived polydopamine has been developed. Since the synthetic procedure is simple and robust, and requires only simple mixing under ambient conditions, excellent batch-to-batch consistency has been achieved. As a result, this process can be easily scaled-up to produce gram-scale batches with physicochemical parameters similar to those of materials synthesized in smaller batches. The resulting nanotheranostic agents exhibit efficient X-ray tomography and T1-weighted magnetic resonance image contrast enhancing abilities due to their chemically ligated, benign Bi3+ and Fe3+ ions. Furthermore, the inclusion of a polydopamine shell makes the nanoparticle surface easy to functionalize and renders these materials highly efficient as photothermal agents. These nanotheranostic agents are suitable for mass production and for potential applications in multimodal imaging-guided therapy in clinical settings.

关键词： mesoporous silica polydopamine theranostic multimodal imaging mass production

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Tumor Microenvironment‐Activated NIR‐II nanotheranostic System for Precise Diagnosis and Treatment of Peritoneal Metastasis

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Angewandte Chemie 2020年第18期132卷

作者： Sisi Ling Xiaohu Yang Chunyan Li Yejun Zhang Hongchao Yang Guangcun Chen Qiangbin Wang School of Nano-Tech and Nano-Bionics University of Science and Technology of China Hefei 230026 P. R. China CAS Key Laboratory of Nano-Bio Interface Suzhou Key Laboratory of Functional Molecular Imaging Technology Division of Nanobiomedicine andi-Lab Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Suzhou 215123 China College of Materials Sciences and Opto-Electronic Technology University of Chinese Academy of Sciences Beijing 100049 China

Activatable theranostic systems show potential for improved tumor diagnosis and therapy owing to high detection specificities, effective ablation, and minimal side‐effects. Herein, a tumor microenvironment (TME)‐activated NIR‐II nanotheranostic system (FEAD1) for precise diagnosis and treatment of peritoneal metastases is presented. FEAD1 was fabricated by self‐assembling the peptide Fmoc‐His, mercaptopropionic‐functionalized Ag 2 S quantum dots (MPA‐Ag 2 S QDs), the chemodrug doxorubicin (DOX), and NIR absorber A1094 into nanoparticles. We show that in healthy tissue, FEAD1 exists in an NIR‐II fluorescence “off” state, because of Ag 2 S QDs‐A1094 interactions, while DOX remains in stealth mode. Upon delivery of FEAD1 to the tumor, the acidic TME triggers its disassembly through breakage of the Fmoc‐His metal coordination and DOX hydrophobic interactions. Release of A1094 switches on Ag 2 S fluorescence, illuminating the tumor, accompanied by burst release of DOX within the tumor tissue, thereby achieving precise tumor theranostics. This TME‐activated theranostic strategy holds great promise for future clinical applications.

关键词： Koordinative Assemblierung nanotheranostik NIR-II Tumormetastase Tumormikroumgebung

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Ultrathin Two-Dimensional nanostructures: Surface Defects for Morphology-Driven Enhanced Semiconductor SERS

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Angewandte Chemie 2020年第10期133卷

作者： Ge Song Wenbin Gong Shan Cong Zhigang Zhao School of Nano-Tech and Nano-Bionics University of Science and Technology of China Hefei 230026 China Key Lab of Nanodevices and Applications Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Suzhou 215123 China School of Physics and Energy Xuzhou University of Technology Xuzhou 221018 China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Chinese Academy of Sciences (CAS) Suzhou 215123 China Division of Nanomaterials Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Nanchang 330200 China

Two-dimensional (2D) semiconductors have recently become attractive candidate substrates for surface-enhanced Raman spectroscopy, exhibiting good semiconductor-based SERS sensing for a wider variety of application scenarios. However, the underlying mechanism remains unclear. Herein, we propose that surface defects play a vital role in the magnification of the SERS performances of 2D semiconductors. As a prototype material, ultrathin WO 3 nanosheets is used to demonstrate that surface defect sites and the resulting increased charge-carrier density can induce strong charge-transfer interactions at the substrate-molecule interface, thereby improving the sensitivity of the SERS substrate by 100 times with high reproducibility. Further work with other metal oxides suggests the reduced dimension of 2D materials can be advantageous in promoting SERS sensing for multiple probe molecules.

关键词： 2D materials charge-transfer efficiency semiconductor SERS surface defect ultrathin nanosheets

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Terahertz Photon Detection: Sensitive Terahertz Detection and Imaging Driven by the Photothermoelectric Effect in Ultrashort-Channel Black Phosphorus Devices (Adv. Sci. 5/2020)

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Advanced Science 2020年第5期7卷 2070029-2070029页

作者： Wanlong Guo Zhuo Dong Yijun Xu Changlong Liu Dacheng Wei Libo Zhang Xinyao Shi Cheng Guo Huang Xu Gang Chen Lin Wang Kai Zhang Xiaoshuang Chen Wei Lu State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences 500 Yu-Tian Road Shanghai 200083 China University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 China School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China CAS Key Laboratory of Nano-Bio Interface and Key Laboratory of Nanodevices and Applications i-Lab Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO) Chinese Academy of Sciences Ruoshui Road 398 Suzhou Jiangsu 215123 China School of Nano Technology and Nano Bionics University of Science and Technology of China Jinzhai Road 96 Hefei Anhui 230026 China Zhejiang Lab Artificial Intelligence Town No.1818 Wenyixi Road Hangzhou 311100 China Institute of Molecular Materials and Devices Department of Material Sciences and Department of Macromolecular Sciences Fudan University Shanghai 200433 China

In article number https://***/10.1002/advs.201902699 , Lin Wang, Kai Zhang, Xiaoshuang Chen, and co‐workers boost the photothermoelectric effect (PTE) through ultrashort channel design via a titled‐angle evaporation technique. Such a detector exhibits tremendous field‐enhancement as well as high efficiency terahertz photon absorption across a broadband frequency range beyond the skin depth limit, introducing an avenue for deeply understanding the role of the PTE effect and its targeted applications for fast imaging.

关键词： black phosphorus imaging photothermoelectric effect terahertz detectors

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Precise nanomedicine for intelligent therapy of cancer

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Science China Chemistry 2018年第12期61卷 1503-1552页

作者： Huabing Chen Zhanjun Gu Hongwei An Chunying Chen Jie Chen Ran Cui Siqin Chen Weihai Chen Xuesi Chen Xiaoyuan Chen Zhuo Chen Baoquan Ding Qian Dong Qin Fan Ting Fu Dayong Hou Qiao Jiang Hengte Ke Xiqun Jiang Gang Liu Suping Li Tianyu Li Zhuang Liu Guangjun Nie Muhammad Ovais Daiwen Pang Nasha Qiu Youqing Shen Huayu Tian Chao Wang Hao Wang Ziqi Wang Huaping Xu Jiang-Fei Xu Xiangliang Yang Shuang Zhu Xianchuang Zheng Xianzheng Zhang Yanbing Zhao Weihong Tan Xi Zhang Yuliang Zhao State Key Laboratoiy of Radiation Medicine and Protection Jiangsu Key Laboratoiy of Neuropsychiatric Diseases College of Pharmaceutical Sciences Soochow University Suzhou 215123 China Key Laboratoiy of Biomedical Polymers of Ministry of Education Department of Chemistiy Wuhan University Wuhan 430072 China Laboratoiy of Molecular Imaging and Nanomedicine National Institute of Biomedical Imaging and Bioengineering National Institutes of Health Bethesda MD 20892 USA Molecular Science and Biomedicine Laboratoiy State Key Laboratory of Chemo/Bio-Sensing and Chemometrics College of Chemistiy and Chemical Engineering Aptamer Engineering Center of Hunan Province Hunan University Changsha 410082 China Jiangsu Key Laboratoiy for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials Soochow University Suzhou 215123 China Department of Polymer Science and Engineering College cf Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine School of Public Health Xiamen University Xiamen 361102 China Department of Chemistiy Tsinghua University Beijing 100084 China National Engineering Research Center for Nanomedicine College of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074 China Department of Chemistiy and Department of Physiology and Functional Genomics Center for Research at Bio/nano Interface Health Cancer Center UF Genetics Institute and McKnight Brain Institute University of Florida Gainesville FL 32611-7200 USA institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China CAS Key Laboratoiy for Biomedical Effects of Nanomaterials and Nanosafety CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology of China Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China Key Labo

Precise nanomedicine has been extensively explored for efficient cancer imaging and targeted cancer therapy, as evidenced by a few breakthroughs in their preclinical and clinical explorations. Here, we demonstrate the recent advances of intelligent cancer nanomedicine, and discuss the comprehensive understanding of their structure-function relationship for smart and efficient cancer nanomedicine including various imaging and therapeutic applications, as well as nanotoxicity. In particular, a few emerging strategies that have advanced cancer nanomedicine are also highlighted as the emerging focus such as tumor imprisonment, supramolecular chemotherapy, and DNA nanorobot. The challenge and outlook of some scientific and engineering issues are also discussed in future development. We wish to highlight these new progress of precise nanomedicine with the ultimate goal to inspire more successful explorations of intelligent nanoparticles for future clinical translations.

关键词： nanomedicine nanoparticles cancer therapy cancer imaging intelligent therapy

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Design and simulation of a novel E-mode GaN MIS-HEMT based on a cascode connection for suppression of electric field under gate and improvement of reliability

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Journal of Semiconductors 2017年第7期38卷 49-55页

作者： Weiyi Li Zhili Zhang Kai Fu Guohao Yu Xiaodong Zhang Shichuang Sun Liang Song Ronghui Hao Yaming Fan Yong Cai Baoshun Zhang Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-tech and Nano-bionics CAS Suzhou 215123China University of Chinese Academy of Sciences Beijing 100049 China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China Nanjing University of Science and Technology school of materials science and engineering Nanjing 210094 China Suzhou Powerhouse Electronics Co. Ltd Suzhou 215123 China

We proposed a novel Al Ga N/Ga N enhancement-mode（E-mode） high electron mobility transistor（HEMT） with a dual-gate structure and carried out the detailed numerical simulation of device operation using Silvaco Atlas. The dual-gate device is based on a cascode connection of an E-mode and a D-mode gate. The simulation results show that electric field under the gate is decreased by more than 70% compared to that of the conventional E-mode MIS-HEMTs（from 2.83 MV/cm decreased to 0.83 MV/cm）. Thus, with the discussion of ionized trap density, the proposed dual-gate structure can highly improve electric field-related reliability, such as, threshold voltage stability. In addition, compared with HEMT with field plate structure, the proposed structure exhibits a simplified fabrication process and a more effective suppression of high electric field.

关键词： GaN HEMT enhancement-mode electric field distribution V_（th） instability

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