Hybrid Perovskite Solar Cells

15Stability of Hybrid Perovskite Solar Cells

Seigo Ito

Department of Materials and Synchrotron Radiation Engineering, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671‐2280, Japan

15.1 Introduction: Trigger of the Degradation

Photovoltaic panels have three requirements for commercialization: “high efficiency,” “low cost,” and “high stability.” Although organo‐lead‐halide perovskite solar cells (PSCs) have a high efficiency of 25.2% [1, 2] and a low cost [3], the stability is insufficient, which is the most important issue. This organo‐lead‐halide perovskite crystal is quite weak against “water,” “heat,” and “light,” because it is just a salt similar to a soap (“savon” in French). Moreover, one of the components ...