[13p-PA3-1~28] 12.5 Organic solar cells

[13p-PA3-20] Elemental and Compositional Screening of Ag-(III-V)-I Solar Cell and Device Characterization

〇Fumiya Iyoda¹, Ryosuke Nishikubo¹, Akinori Saeki¹ (1.Osaka Univ.)

Keywords:solar cell, lead free, perovskite solar cell

Recently, Ag-Bi based materials are showing much interest as a low-toxic and inexpensive lead free material to substitute for lead halide perovskite. In this study, III-V cation which can be substituted for Bi was researched by time-resolved microwave conductivity (TRMC). Subsequently, we fabricated solar cell which is made of Sb and Bi mixed films (Ag-Bi-Sb-I). The solar cell showed higher PCE than Ag-Bi-I. Furthermore, we analyzed elemental composition of the samples by Energy Dispersive X-ray Spectroscopy (EDX). From the results, it is found that the samples didn’t contain enough ratio of I₂ compared with the amount of original I₂. Therefore, we added I₂ into precursor solution, and successfully observed the improvement of solar cell performance.