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Atmospheric preparation of ZnO thin films by mist chemical vapor deposition for spray-coated organic solar cells

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Abstract

We deposited large-scale ZnO films on FTO/glass substrates have been prepared and characterized using mist chemical vapor deposition at different temperatures ranging from 350 to 450 °C. The performance of poly(3-hexylthiophene):[6, 6]-phenyl C61-butyric acid methyl ester (P3HT:PCBM) based organic solar cells (OSCs) was used to demonstrate the electron transport performance of differently prepared ZnO films. We found that the photovoltaic performance of spray-coated OSC is more affected by the phase composition than the morphology or optical transmittance. The short circuit current (JSC) of spray-coated OSCs is strongly affected by the mixed phase in ZnO and led to a low device performance. OSCs with ZnO cathode buffer layers deposited at 400 and 450 °C performed better, with a power conversion efficiency of 3.44 and 3.51 %, respectively. In addition, a maximum output power as high as 110 mW was measured for large OSCs, which indicates that the described method is also suitable for large-scale OSC fabrication.

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Acknowledgments

This work was supported by Co-Innovation Center for Micro/Nano Optoelectronic Materials and Devices, National Natural Science Foundation of China (Grant No. 61505018), the Chongqing Science & Technology Commission (Grant No. cstc2013jcyjys50001) and Chongqing University of Science and Arts (Grant No. R2012CJ18&Z2013CJ02), Science Foundation General Program of Civil Aviation Flight University of China (No. J2014-92).

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Correspondence to Jiang Cheng.

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Zhao, X., Cheng, J. Atmospheric preparation of ZnO thin films by mist chemical vapor deposition for spray-coated organic solar cells. J Mater Sci: Mater Electron 27, 2676–2681 (2016). https://doi.org/10.1007/s10854-015-4076-y

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  • DOI: https://doi.org/10.1007/s10854-015-4076-y

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