ITO-Free Semitransparent Organic Solar Cells Based on Silver Thin Film Electrodes
Zhizhe Wang
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorCorresponding Author
Chunfu Zhang
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorDazheng Chen
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorShi Tang
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorJincheng Zhang
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorLi Sun
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorTing Heng
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorCorresponding Author
Yue Hao
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorZhizhe Wang
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorCorresponding Author
Chunfu Zhang
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorDazheng Chen
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorShi Tang
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorJincheng Zhang
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorLi Sun
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorTing Heng
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorCorresponding Author
Yue Hao
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School Of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China xidian.edu.cn
Search for more papers by this authorAbstract
ITO-free semitransparent organic solar cells (OSCs) based on MoO3/Ag anodes with poly(3-hexylthiophene) and [6,6]-phenyl-C61-butyric acid methyl ester films as the active layer are investigated in this work. To obtain the optimal transparent (MoO3)/Ag anode, ITO-free reference OSCs are firstly fabricated. The power conversion efficiency (PCE) of 2.71% is obtained for OSCs based on the optimal MoO3 (2 nm)/Ag (9 nm) anode, comparable to that of ITO-based reference OSCs (PCE of 2.85%). Then based on MoO3 (2 nm)/Ag (9 nm) anode, ITO-free semitransparent OSCs with different thickness combination of Ca and Ag as the cathodes are investigated. It is observed from our results that OSCs with Ca (15 nm)/Ag (15 nm) cathode have the optimal transparency. Meanwhile, the PCE of 1.79% and 0.67% is obtained for illumination from the anode and cathode side, respectively, comparable to that of similar ITO-based semitransparent OSCs (PCE of 1.59% and 0.75% for illumination from the anode and cathode side, resp.) (Sol. Energy Mater. Sol. Cells, 95, pp. 877–880, 2011). The transparency and PCE of ITO-free semitransparent OSCs can be further improved by introducing a light couple layer. The developed method is compatible with various substrates, which is instructive for further research of ITO-free semitransparent OSCs.
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