The 81st JSAP Autumn Meeting, 2020

Presentation information

Oral presentation

13 Semiconductors » 13.9 Compound solar cells

[9p-Z15-1~10] 13.9 Compound solar cells

Wed. Sep 9, 2020 1:00 PM - 3:45 PM Z15

Hitoshi Tampo(AIST)

1:00 PM - 1:15 PM

[9p-Z15-1] Gamma-Ray Irradiation Effects on CdTe Solar Cell Dosimeter

Tamotsu Okamoto1, Takahiro Fukui1, Ryuto Tozawa1, Yasuhito Gotoh2, Nobuhiro Sato2, Tomohiro Kobayashi3, Mitsuru Imaizumi4, Yasuki Okuno5, Masafumi Akiyoshi6 (1.NIT, Kisarazu Coll., 2.Kyoto Univ., 3.RIKEN, 4.JAXA, 5.Tohoku Univ., 6.Osaka Pref. Univ.)

Keywords:CdTe, CdTe solar cell, II-VI compounds

In this work, compact and higly radiation-tolerant radiation dosimeter without voltage-bias application using solar cell such as CdTe is proposed for severe radiation environment near a nuclear reactor pressure vessel. First, gamma-ray tolerance of a CdTe solar cells was investigated. It was found that the CdTe solar cell has sufficient tolerance against gamma-ray exposure with greater than 3 MGy. It was demonstrated that gamma-ray induced current density increased linearly with increasing gamma-ray intensity in the range up to approximately 1.5 kGy/h. In addition, gamma-ray sensitivity was successfully increased by a stack of CdTe solar cells with parallel connection. Furhthermore, it was found that gamma rays with approximately 0.1 Gy/h was detected by the CdTe solar cells.