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Solid-phase hetero epitaxial growth of α-phase formamidinium perovskite.
Lee, Jin-Wook; Tan, Shaun; Han, Tae-Hee; Wang, Rui; Zhang, Lizhi; Park, Changwon; Yoon, Mina; Choi, Chungseok; Xu, Mingjie; Liao, Michael E; Lee, Sung-Joon; Nuryyeva, Selbi; Zhu, Chenhui; Huynh, Kenny; Goorsky, Mark S; Huang, Yu; Pan, Xiaoqing; Yang, Yang.
Afiliação
  • Lee JW; Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA. jw.lee@skku.edu.
  • Tan S; Department of Nanoengineering, SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 16419, Republic of Korea. jw.lee@skku.edu.
  • Han TH; Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA.
  • Wang R; Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA.
  • Zhang L; Division of Materials Science and Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
  • Park C; Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA.
  • Yoon M; Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA.
  • Choi C; Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA.
  • Xu M; Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
  • Liao ME; Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA.
  • Lee SJ; Department of Materials Science and Engineering, Irvine Materials Research Institute, University of California, Irvine, CA, 92697, USA.
  • Nuryyeva S; Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA.
  • Zhu C; Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA.
  • Huynh K; Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA.
  • Goorsky MS; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94704, USA.
  • Huang Y; Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA.
  • Pan X; Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA.
  • Yang Y; Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA.
Nat Commun ; 11(1): 5514, 2020 Nov 02.
Article em En | MEDLINE | ID: mdl-33139740
ABSTRACT
Conventional epitaxy of semiconductor films requires a compatible single crystalline substrate and precisely controlled growth conditions, which limit the price competitiveness and versatility of the process. We demonstrate substrate-tolerant nano-heteroepitaxy (NHE) of high-quality formamidinium-lead-tri-iodide (FAPbI3) perovskite films. The layered perovskite templates the solid-state phase conversion of FAPbI3 from its hexagonal non-perovskite phase to the cubic perovskite polymorph, where the growth kinetics are controlled by a synergistic effect between strain and entropy. The slow heteroepitaxial crystal growth enlarged the perovskite crystals by 10-fold with a reduced defect density and strong preferred orientation. This NHE is readily applicable to various substrates used for devices. The proof-of-concept solar cell and light-emitting diode devices based on the NHE-FAPbI3 showed efficiencies and stabilities superior to those of devices fabricated without NHE.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article