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https://hdl.handle.net/10356/81488
Title: | Cesium Carbonate Functionalized Graphene Quantum Dots as Stable Electron-Selective Layer for Improvement of Inverted Polymer Solar Cells | Authors: | Yang, Hong Bin Dong, Yong Qiang Wang, Xizu Khoo, Si Yun Liu, Bin |
Keywords: | cesium carbonate cathode buffer |
Issue Date: | 2013 | Source: | Yang, H. B., Dong, Y. Q., Wang, X., Khoo, S. Y., & Liu, B. (2014). Cesium Carbonate Functionalized Graphene Quantum Dots as Stable Electron-Selective Layer for Improvement of Inverted Polymer Solar Cells. ACS Applied Materials & Interfaces, 6(2), 1092-1099. | Series/Report no.: | ACS Applied Materials & Interfaces | Abstract: | Solution processable inverted bulk heterojunction (BHJ) polymer solar cells (PSCs) are promising alternatives to conventional silicon solar cells because of their low cost roll-to-roll production and flexible device applications. In this work, we demonstrated that Cs2CO3 functionalized graphene quantum dots (GQDs–Cs2CO3) could be used as efficient electron-selective layers in inverted PSCs. Compared with Cs2CO3 buffered devices, the GQDs–Cs2CO3 buffered devices show 56% improvement in power conversion efficiency, as well as 200% enhancement in stability, due to the better electron-extraction, suppression of leakage current, and inhibition of Cs+ ion diffusion at the buffer/polymer interface by GQDs–Cs2CO3. This work provides a thermal-annealing-free, solution-processable method for fabricating electron-selective layer in inverted PSCs, which should be beneficial for the future development of high performance all-solution-processed or roll-to-roll processed PSCs. | URI: | https://hdl.handle.net/10356/81488 http://hdl.handle.net/10220/40859 |
ISSN: | 1944-8244 | DOI: | 10.1021/am404638e | Schools: | School of Chemical and Biomedical Engineering | Rights: | © 2013 American Chemical Society. | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | SCBE Journal Articles |
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