Please use this identifier to cite or link to this item: https://doi.org/10.1021/am404291p
Title: Efficient "light-soaking"-free inverted organic solar cells with aqueous solution processed low-temperature ZnO electron extraction layers
Authors: Wei, W.
Zhang, C.
Chen, D.
Wang, Z.
Zhu, C. 
Zhang, J.
Lu, X.
Hao, Y.
Keywords: "Light-soaking" effect
Aqueous solution method
Inverted organic solar cell
Sol gel method
Zinc oxide
Issue Date: 26-Dec-2013
Citation: Wei, W., Zhang, C., Chen, D., Wang, Z., Zhu, C., Zhang, J., Lu, X., Hao, Y. (2013-12-26). Efficient "light-soaking"-free inverted organic solar cells with aqueous solution processed low-temperature ZnO electron extraction layers. ACS Applied Materials and Interfaces 5 (24) : 13318-13324. ScholarBank@NUS Repository. https://doi.org/10.1021/am404291p
Abstract: Low-temperature processes are unremittingly pursued in the fabrication of organic solar cells. The paper reports that the highly efficient and "light-soaking"-free inverted organic solar cell can be achieved by using ZnO thin films processed from the aqueous solution method at a low temperature. The inverted organic solar with an aqueous-processed ZnO thin film annealed at 150 C shows an efficiency of 3.79%. Even when annealed at a temperature as low as 80 C, the device still shows an efficiency of 3.71%. With the proper annealing temperature of 80 C, the flexible device, which shows an efficiency of 3.56%, is fabricated on PET. This flexible device still keeps the efficiency above 3.40% after bent for 1000 times with a curvature radius of 50 mm. In contrast, a low annealing temperature leads to an inferior device performance when the ZnO thin film is processed from the widely used sol-gel method. The device with sol-gel processed ZnO annealed at 150 C only shows a PCE of 1.3%. Furthermore, the device shows a strong "light-soaking" effect, which is not observed in the device containing an aqueous-processed ZnO thin film. Our results suggest that the adopted aqueous solution method is a more efficient low temperature technique, compared with the sol-gel method. © 2013 American Chemical Society.
Source Title: ACS Applied Materials and Interfaces
URI: http://scholarbank.nus.edu.sg/handle/10635/82240
ISSN: 19448244
DOI: 10.1021/am404291p
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