Hybrid Perovskite Solar Cells

4Optical Properties

Hiroyuki Fujiwara¹, Yukinori Nishigaki¹, Akio Matsushita² and Taisuke Matsui²

¹Gifu University, Department of Electrical, Electronic and Computer Engineering, 1‐1 Yanagido, Gifu, 501‐1193, Japan

²Panasonic Corporation, Technology Innovation Division, 3‐1‐1 Yagumo‐naka‐machi, Moriguchi City, Osaka, 570‐8501, Japan

4.1 Introduction

Strong light absorption within absorbers is one of the critical conditions for the efficient operation of solar cells. For hybrid perovskite absorbers that are formed typically by a spin coating process, the formation of a thicker layer (>1 μm) is difficult and a high absorption coefficient (α) is particularly important. Fortunately, various hybrid perovskites exhibit high α in the visible/ultraviolet ...