[14p-A34-1~10] 13.10 Compound solar cells

△ [14p-A34-10] Observation of exciton spin relaxation in CuInSe₂ thin films

〇(M2)Canyu Jiang¹, Sathiabama Thiru², Yoshiki Nakamura¹, Ko Nakayama¹, Masayuki Iida¹, Shima Tanigawa¹, Yoshiji Horikoshi¹, Atsushi Tackeuchi¹ (1.Waseda Univ., 2.UTM Razak School)

Keywords:CuInSe, spin

CuInSe₂ (CIS) and related materials are promising candidates for low cost, high efficiency photo-absorber layers for solar cells.¹ These materials can be also applied to a large variety of electro-optic devices.¹ There are attempts to use carrier spin as a new degree of freedom in order to apply for spin dependent devices. However, the spin relaxation in these materials has not yet been investigated. In this study, we report the spin relaxation of CIS thin films obtained by spin dependent time-resolved pump and probe measurement.