Anisotropic optoelectronic performances on (112) and (100) lattice plane of perovskite MAPbI(3) single crystal

作者：Ding, Jianxu^*; Du, Songjie; Cheng, Xiaohua; Jing, Lin; Zhao, Ying; Zuo, Zhiyuan^*; Cui, Hongzhi^*; Zhan, Xiaoyuan

来源：Materials Chemistry and Physics, 2018, 204: 222-227.

DOI：10.1016/j.matchemphys.2017.10.052

• MAPbI(3)
• Single crystal
• Photo-detector
• Anisotropic optoelectronic

Organic-inorganic hybrid methylammonium lead iodide perovskite (MAPbI(3)) is considered as new generation optoelectronic material. MAPbI(3) single crystal is proved more excellent than its poly-crystalline film and nano state counterparts, though the discrepancy is still pending. Referring MAPbI(3) single crystal applications, physical anisotropy stands in its breach. However, it has not been drawn enough attentions till now. In this study, taking advantages of the natural exposed (100) and (112) facets of MAPbI(3) single crystal grown from gamma-butyrolactone (GBL) solution, the anisotropic optoelectronic performances based on of these two lattice planes were systematically explored through planar metal-semiconductor-metal (MSM) devices. An order enhanced photocurrents, 135% increased responsivity, and 128% heightened EQE on (112) plane device than those on (100) plane device under 5 V bias with irradiation power of 1 mW, remarkably demonstrated that (112) plane was more excellent in optoelectronic performances and light harvesting capability.

• 出版日期2018-1-15
• 单位山东科技大学; 山东大学