Controlled Homoepitaxial Growth of Hybrid Perovskites

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

doi:10.1002/adma.201705992

Controlled Homoepitaxial Growth of Hybrid Perovskites

Adv Mater. 2018 May;30(20):e1705992. doi: 10.1002/adma.201705992. Epub 2018 Apr 2.

Authors

Yusheng Lei¹, Yimu Chen¹, Yue Gu², Chunfeng Wang^{1

3}, Zhenlong Huang^{1

4}, Haoliang Qian⁵, Jiuyuan Nie², Geoff Hollett², Woojin Choi⁵, Yugang Yu², NamHeon Kim¹, Chonghe Wang¹, Tianjiao Zhang², Hongjie Hu², Yunxi Zhang¹, Xiaoshi Li², Yang Li¹, Wanjun Shi⁶, Zhaowei Liu^{2

5}, Michael J Sailor^{2

7}, Lin Dong³, Yu-Hwa Lo^{2

5}, Jian Luo^{1

2}, Sheng Xu^{1

2}

Affiliations

¹ Department of Nanoengineering, University of California San Diego, La Jolla, CA, 92093, USA.
² Materials Science and Engineering Program, University of California San Diego, La Jolla, CA, 92093, USA.
³ The Key Laboratory of Materials Processing and Mold of Ministry of Education, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, P. R. China.
⁴ School of Microelectronics and Solid State Electronics, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China.
⁵ Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, 92093, USA.
⁶ Zhejiang Research Institute of Chemical Industry, Hangzhou, Zhejiang, 310023, P. R. China.
⁷ Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, 92093, USA.

PMID: 29611280
DOI: 10.1002/adma.201705992

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 CH₃ NH₃ PbBr₃ 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 CH₃ NH₃ PbBr₃ crystal as a single pixel, with enhanced quantum efficiencies than its polycrystalline counterparts is demonstrated.

Keywords: LEDs; epitaxial growth; hybrid perovskites; patterns; single crystals.