[9a-S222-1~10] 12.5 Organic solar cells

[9a-S222-9] Degradation Evaluation of Perovskite Solar Cells Using a Laser Terahertz Emission Microscope

〇Akira Ito¹, Toshimitsu Mochizuki³, Hidetaka Takato³, Hidetoshi Nakanishi¹, Iwao Kawayama², Masayoshi Tonouchi², Yoshihiko Nishihara⁴, Masayuki Chikamatsu⁴, Yuji Yoshida^3,4 (1.SCREEN Holdings Co., Ltd., 2.ILE Osaka Univ., 3.FREA AIST, 4.AIST)

Keywords:perovskite, terahertz wave, solar cell

A laser terahertz emission microscope(LTEM) is a non-contact inspection technique based on a THz emission spectroscopy and imaging that can visualize intensity of pulsed terahertz radiation from the materials and devices excited by femtosecond laser pulses. We measured degraded perovskite solar cells using LTEM. As a result, their degradation conditions were correlated with THz wave amplitude from perovskite solar cells. Therefore, we believe that it can provide information about degradation mechanism of perovskite solar cells.