講演情報
[11a-C214-7]ITO/APC/ITO Multilayer Transparent Electrodes for Flexible Organic Photodetectors
〇(M1)Dongui Choi1, Mari Koizumi1, Tomoyuki Yokota1, Takao Someya1 (1.Univ of Tokyo)
キーワード：
Organic photodetector、Transparent electrode
Organic photodetectors (OPDs) are promising for flexible sensing but are limited by the brittleness of conventional indium tin oxide (ITO) electrodes. This study evaluates ITO/Ag-Pd-Cu/ITO (ITO/APC/ITO) multilayer transparent electrodes for flexible OPDs. The ITO/APC/ITO electrodes demonstrated high visible transmittance and lower sheet resistance than conventional ITO. Bending durability was tested over 500 cycles at a 5 mm bending radius (1.1% tensile strain). The sheet resistance of the ITO/APC/ITO electrode increased minimally from 17.4 to 18.6 Ω/sq (R/R0 = 1.07), whereas conventional ITO degraded significantly from 50 to 237 Ω/sq (R/R0 = 4.74). OPDs fabricated with a ZnO/P3HT:PC61BM/MoOx/Ag architecture on ITO/APC/ITO retained ~92% of the peak external quantum efficiency (EQE) compared to ITO-based reference devices. These findings establish ITO/APC/ITO as a highly durable, transparent, and conductive electrode candidate for flexible OPD applications.