Effect of pentacene/Ag anode buffer and UV-ozone treatment on durability of small-molecule organic solar cells

33rd International Conference on the Physics of Semiconductors

Inagaki, S.^1 ; Sueoka, S.^1 ; Harafuji, K.^1

Department of Electrical and Electronic Engineering, Ritsumeikan University, Kusatsu, Shiga

525-8577, Japan^1

关键词: Anode buffer;    Indium tin oxide;    Ozone treatment;    Pentacenes;    Small-molecule organic solar cells;    Ultra-thin;    Ultra-violet;    UV-ozone treatment;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/864/1/012066/pdf
DOI  :  10.1088/1742-6596/864/1/012066

来源: IOP

【 摘 要 】

Three surface modifications of indium tin oxide (ITO) are experimentally investigated to improve the performance of small-molecule organic solar cells (OSCs) with an ITO/anode buffer layer (ABL)/copper phthalocyanine (CuPc)/fullerene/bathocuproine/Ag structure. An ultrathin Ag ABL and ultraviolet (UV)-ozone treatment of ITO independently improve the durability of OSCs against illumination stress. The thin pentacene ABL provides good ohmic contact between the ITO and the CuPc layer, thereby producing a large short-circuit current. The combined use of the abovementioned three modifications collectively achieves both better initial performance and durability against illumination stress.