fig12

From: Phase-dependent materials design and characteristic properties of two-dimensional (2D) halide perovskite single crystals for optoelectronic applications

Phase-dependent materials design and characteristic properties of two-dimensional (2D) halide perovskite single crystals for optoelectronic applications

Figure 12. Photodetector structures fabricated on the (A) (001) and (B) (010) planes of a 2D (PEA)₂PbI₄ single crystals. (C) Current-voltage (I-V) curves of the devices fabricated on (001) plane and (010) plane under identical light conditions. (D) Photocurrent for twenty devices on (001) and (010) planes of the (PEA)₂PbI₄ single crystals. Reprinted with permission from ref.^[47]: Copyright 2019, Elsevier. (E) (PEA)₂PbI₄ stability in the ambient environment. (F) Light absorbance spectrum and photoresponse of (PEA)₂PbI₄ under 0.28 mW cm^-2 monochromatic light ranging from 450 to 540 nm of wavelength at 1 V. Reprinted with permission from ref.^[69]: Copyright 2020, Wiley-VCH GmbH.