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Crystal Size Effect on Carrier Transport of Microscale Perovskite Junctions via Soft Contact.
Zhao, Zhibin; Wang, Wenduo; Zhou, Xin; Ni, Lifa; Kang, Keehoon; Lee, Takhee; Han, Hong; Yuan, Hongrui; Guo, Chenyang; Wang, Maoning; Ko, Min Jae; Li, Yuelong; Xiang, Dong.
Afiliación
  • Zhao Z; Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China.
  • Wang W; Center of Single Molecule Sciences, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China.
  • Zhou X; Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Solar Energy Research Center, Nankai University, Tianjin 300350, China.
  • Ni L; Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Solar Energy Research Center, Nankai University, Tianjin 300350, China.
  • Kang K; Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China.
  • Lee T; Center of Single Molecule Sciences, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China.
  • Han H; Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Korea.
  • Yuan H; Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Korea.
  • Guo C; Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Solar Energy Research Center, Nankai University, Tianjin 300350, China.
  • Wang M; Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China.
  • Ko MJ; Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China.
  • Li Y; Center of Single Molecule Sciences, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China.
  • Xiang D; Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China.
Nano Lett ; 20(12): 8640-8646, 2020 Dec 09.
Article en En | MEDLINE | ID: mdl-33238097
ABSTRACT
To reduce the size of optoelectronic devices, it is essential to understand the crystal size effect on the carrier transport through microscale materials. Here, we show a soft contact method to probe the properties of irregularly shaped microscale perovskite crystals by employing a movable liquid metal electrode to form a self-adaptative deformable electrode-perovskite-electrode junction. Accordingly, we demonstrate that (1) the photocurrents of perovskite quantum dot films and microplatelets show profound differences regarding both the on/off ratio and the response time upon light illumination; and (2) small-size perovskite (<50 µm) junctions may show negative differential resistance (NDR) behavior, whereas the NDR phenomenon is absent in large-size perovskite junctions within the same bias regime. Our studies provide a method for studying arbitrary-shaped crystals without mechanical damage, assisting the understanding of the photogenerated carriers transport through microscale crystals.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2020 Tipo del documento: Article País de afiliación: China
Texto completo
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PubMed Links
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2020 Tipo del documento: Article País de afiliación: China