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|Title:||Enhanced inverted organic solar cell performance by post-treatments of solution-processed ZnO buffer layers|
|Citation:||Lin, Z., Chang, J., Jiang, C., Zhang, J., Wu, J., Zhu, C. (2014). Enhanced inverted organic solar cell performance by post-treatments of solution-processed ZnO buffer layers. RSC Advances 4 (13) : 6646-6651. ScholarBank@NUS Repository. https://doi.org/10.1039/c3ra46702c|
|Abstract:||The effects of post-treatments (150°C-thermal, humidity, and vacuum) on the cathode buffer layer of aqueous-solution-processed zinc oxide (ZnO) films on the performance of the inverted organic solar cells (OSCs) are investigated, based on poly(3-hexylthiophene)/[6,6]-phenyl-C61-butyric acid methyl ester (P3HT/PC61BM) as the active layers. The devices with the ZnO buffer layers that underwent thermal and vacuum post-treatments exhibited 17% and 15% increments in the power conversion efficiency (PCE) as compared to that of the cell without post-treatment on the ZnO layer, mainly due to the increases of the short circuit current (Jsc). It was found that the thermal and vacuum post-treatments reduced the defects and increased the electron mobility in the ZnO buffer layers, improving the electron extractions in the inverted OSCs. Both the 150°C-thermal and vacuum post-treatments are compatible with plastic substrates, showing a potential way to further improve the film properties of the low-temperature processed ZnO buffer layers. © 2014 The Royal Society of Chemistry.|
|Source Title:||RSC Advances|
|Appears in Collections:||Staff Publications|
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