[16p-Z20-1~11] 12.5 Organic solar cells

[16p-Z20-2] Stability and low light performance of mixed composition metal halide perovskite solar cells with sputtered nickel oxide hole transport layers

〇Richard Murdey¹, Namrata Pant¹, Minh Anh Truong¹, Tomoya Nakamura¹, Atsushi Wakamiya¹ (1.Kyoto Univ.)

Keywords:perovskite, solar cell, nickel oxide

We examine the stability behavior of mixed composition metal halide perovskite solar cells fabricated with sputtered NiO_x hole transport material. The J-V parameters were monitored over 100 h operation at maximum power, in inert atmosphere, under AM1.5G simulated solar radiation. Remarkably, the output characteristics of the devices gradually improved over the testing period, with no hysteresis developing, and exceptionally high fill factor maintained throughout. A fill factor of 0.81 was achieved in stable operation, maintained over a period of more than 50 h. Examining the light intensity dependence, we found nearly ideal diode behavior extending to 200 lx, with a PCE at 200 lx of 15%.