Please use this identifier to cite or link to this item: 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
Rights: © 2013 American Chemical Society.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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