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A fabrication process for flexible single-crystal perovskite devices.
Lei, Yusheng; Chen, Yimu; Zhang, Ruiqi; Li, Yuheng; Yan, Qizhang; Lee, Seunghyun; Yu, Yugang; Tsai, Hsinhan; Choi, Woojin; Wang, Kaiping; Luo, Yanqi; Gu, Yue; Zheng, Xinran; Wang, Chunfeng; Wang, Chonghe; Hu, Hongjie; Li, Yang; Qi, Baiyan; Lin, Muyang; Zhang, Zhuorui; Dayeh, Shadi A; Pharr, Matt; Fenning, David P; Lo, Yu-Hwa; Luo, Jian; Yang, Kesong; Yoo, Jinkyoung; Nie, Wanyi; Xu, Sheng.
  • Lei Y; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Chen Y; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Zhang R; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Li Y; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Yan Q; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Lee S; Department of Mechanical Engineering, Texas A&M University, College Station, TX, USA.
  • Yu Y; Material Science and Engineering Program, University of California San Diego, La Jolla, CA, USA.
  • Tsai H; Los Alamos National Laboratory, Los Alamos, NM, USA.
  • Choi W; Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, USA.
  • Wang K; Material Science and Engineering Program, University of California San Diego, La Jolla, CA, USA.
  • Luo Y; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Gu Y; Material Science and Engineering Program, University of California San Diego, La Jolla, CA, USA.
  • Zheng X; Department of Physics, Tsinghua University, Beijing, People's Republic of China.
  • Wang C; College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, People's Republic of China.
  • Wang C; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Hu H; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Li Y; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Qi B; Material Science and Engineering Program, University of California San Diego, La Jolla, CA, USA.
  • Lin M; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Zhang Z; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Dayeh SA; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Pharr M; Material Science and Engineering Program, University of California San Diego, La Jolla, CA, USA.
  • Fenning DP; Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, USA.
  • Lo YH; Department of Mechanical Engineering, Texas A&M University, College Station, TX, USA.
  • Luo J; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Yang K; Material Science and Engineering Program, University of California San Diego, La Jolla, CA, USA.
  • Yoo J; Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, USA.
  • Nie W; Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
  • Xu S; Material Science and Engineering Program, University of California San Diego, La Jolla, CA, USA.
Nature ; 583(7818): 790-795, 2020 07.
Article en En | MEDLINE | ID: mdl-32728239
ABSTRACT
Organic-inorganic hybrid perovskites have electronic and optoelectronic properties that make them appealing in many device applications1-4. Although many approaches focus on polycrystalline materials5-7, single-crystal hybrid perovskites show improved carrier transport and enhanced stability over their polycrystalline counterparts, due to their orientation-dependent transport behaviour8-10 and lower defect concentrations11,12. However, the fabrication of single-crystal hybrid perovskites, and controlling their morphology and composition, are challenging12. Here we report a solution-based lithography-assisted epitaxial-growth-and-transfer method for fabricating single-crystal hybrid perovskites on arbitrary substrates, with precise control of their thickness (from about 600 nanometres to about 100 micrometres), area (continuous thin films up to about 5.5 centimetres by 5.5 centimetres), and composition gradient in the thickness direction (for example, from methylammonium lead iodide, MAPbI3, to MAPb0.5Sn0.5I3). The transferred single-crystal hybrid perovskites are of comparable quality to those directly grown on epitaxial substrates, and are mechanically flexible depending on the thickness. Lead-tin gradient alloying allows the formation of a graded electronic bandgap, which increases the carrier mobility and impedes carrier recombination. Devices based on these single-crystal hybrid perovskites show not only high stability against various degradation factors but also good performance (for example, solar cells based on lead-tin-gradient structures with an average efficiency of 18.77 per cent).
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2020 Tipo del documento: Article
Texto completo
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PubMed Links
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2020 Tipo del documento: Article