[C-4] Battery, Photocatalyst, Photodetector

[C-4-04] Investigation of Organic Solar Cells as Photodetectors

〇Jiaxun You¹, Md. Shahiduzzaman¹, Masahiro Nakano¹, Makoto Karakawa¹, Kohichi Iiyama¹, Tetsuya Taima¹ (1. Kanazawa Univ. (Japan))

Presentation style: On-site (in-person)

https://doi.org/10.7567/SSDM.2022.C-4-04

In this work, we investigate the effect of organic photovoltaic (OPV) structures such as Schottky, planar heterojunction (PHJ) and bulk heterojunction (BHJ) as the organic photodetectors (OPD) and how it contributes to the improvement of the resultant device performance. Interestingly, the Schottky device as OPV exhibited the lowest power conversion efficiency (PCE) of 3×10-4%, subsequently almost unfeasible, whereas Schottky device as the OPD showed the higher linear dynamic range (LDR) of 53 dB, which is superior to those of PHJ and BHJ devices as the OPD (39 dB and 13 dB). OPV with BHJ structure showed higher PCE than Schottky whereas BHJ devices revealed lower LDR than Schottky devices used as OPD because of the poor rectification that get a higher dark current.