[16a-Z20-1~10] 12.5 Organic solar cells

[16a-Z20-10] Study of Photo-Durability of Inverted Organic Solar Cells Based on PBDB-T

〇Akira Takahara¹, Masahiro Nakano¹, Md. Shahiduzzaman², Makoto Karakawa^1,2,3, Tetsuya Taima^1,2,3, Kohshin Takahashi¹, Hajime Shibata⁴, Atsushi Masuda^2,4,5 (1.Kanazawa Univ., 2.NanoMaRi, Kanazawa Univ., 3.InFiniti, Kanazawa Univ., 4.AIST., 5.Niigata Univ.)

Keywords:Organic solar cells

PBDB-T has been used as a donor material for highly efficient organic solar cells (OSCs), but its photo-stability has not been clarified. Our laboratory has reported the OSC with high photo-stability. By changing the donor material of our highly photo-stable OSC to PBDB-T, we investigated the photo-stability of PBDB-T without considering the influence of other materials in the OSC. The photo-stability of the OSCs with PBDB-T decreased with decreasing photocurrent. We found that the decrease in photocurrent was caused by the interaction between PBDB-T and PEDOT:PSS of the hole collection layer.