Controlled Homoepitaxial Growth of Hybrid Perovskites |
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| Authors: | Yusheng Lei Yimu Chen Yue Gu Chunfeng Wang Zhenlong Huang Haoliang Qian Jiuyuan Nie Geoff Hollett Woojin Choi Yugang Yu NamHeon Kim Chonghe Wang Tianjiao Zhang Hongjie Hu Yunxi Zhang Xiaoshi Li Yang Li Wanjun Shi Zhaowei Liu Michael J. Sailor Lin Dong Yu‐Hwa Lo Jian Luo Sheng Xu |
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| Affiliation: | 1. Department of Nanoengineering, University of California San Diego, La Jolla, CA, USA;2. Materials Science and Engineering Program, University of California San Diego, La Jolla, CA, USA;3. The Key Laboratory of Materials Processing and Mold of Ministry of Education, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, Henan, P. R. China;4. School of Microelectronics and Solid State Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan, P. R. China;5. Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, USA;6. Zhejiang Research Institute of Chemical Industry, Hangzhou, Zhejiang, P. R. China;7. Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, USA |
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| Abstract: | Organic–inorganic hybrid perovskites have demonstrated tremendous potential for the next‐generation electronic and optoelectronic devices due to their remarkable carrier dynamics. Current studies are focusing on polycrystals, since controlled growth of device compatible single crystals is extremely challenging. Here, the first chemical epitaxial growth of single crystal CH3NH3PbBr3 with controlled locations, morphologies, and orientations, using combined strategies of advanced microfabrication, homoepitaxy, and low temperature solution method is reported. The growth is found to follow a layer‐by‐layer model. A light emitting diode array, with each CH3NH3PbBr3 crystal as a single pixel, with enhanced quantum efficiencies than its polycrystalline counterparts is demonstrated. |
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| Keywords: | epitaxial growth hybrid perovskites LEDs patterns single crystals |
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