Wafer-scale growth of large arrays of perovskite microplate crystals for functional electronics and optoelectronics

Gongming Wang; Dehui Li; Hung-Chieh Cheng; Yongjia Li; Chih-Yen Chen; Anxiang Yin; Zipeng Zhao; Zhaoyang Lin; Hao Wu; Qiyuan He; Mengning Ding; Yuan Liu; Yu Huang; Xiangfeng Duan

doi:10.1126/sciadv.1500613

Wafer-scale growth of large arrays of perovskite microplate crystals for functional electronics and optoelectronics

Sci Adv. 2015 Oct 2;1(9):e1500613. doi: 10.1126/sciadv.1500613. eCollection 2015 Oct.

Authors

Gongming Wang¹, Dehui Li², Hung-Chieh Cheng³, Yongjia Li³, Chih-Yen Chen², Anxiang Yin², Zipeng Zhao³, Zhaoyang Lin², Hao Wu³, Qiyuan He², Mengning Ding⁴, Yuan Liu³, Yu Huang⁴, Xiangfeng Duan¹

Affiliations

¹ Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA. ; California Nanosystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA.
² Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA.
³ Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.
⁴ California Nanosystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA. ; Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.

Abstract

Methylammonium lead iodide perovskite has attracted intensive interest for its diverse optoelectronic applications. However, most studies to date have been limited to bulk thin films that are difficult to implement for integrated device arrays because of their incompatibility with typical lithography processes. We report the first patterned growth of regular arrays of perovskite microplate crystals for functional electronics and optoelectronics. We show that large arrays of lead iodide microplates can be grown from an aqueous solution through a seeded growth process and can be further intercalated with methylammonium iodide to produce perovskite crystals. Structural and optical characterizations demonstrate that the resulting materials display excellent crystalline quality and optical properties. We further show that perovskite crystals can be selectively grown on prepatterned electrode arrays to create independently addressable photodetector arrays and functional field effect transistors. The ability to grow perovskite microplates and to precisely place them at specific locations offers a new material platform for the fundamental investigation of the electronic and optical properties of perovskite materials and opens a pathway for integrated electronic and optoelectronic systems.

Keywords: Crystal Growth; Electronics; Large Array; Mobility; Optoelectronics; Perovskite; Photodetectors; Transistors.