Dispersion of ZnO Nanocrytals in Co-solvent and Its Application in Photovoltaic Material |
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Authors: | CHEN Shao-jie ZHANG Qiu-yu ZHANG Jun-ping GU Jun-wei ZHOU Jian and SHI You-qiang |
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Institution: | Key Laboratory of Space Materials Science and Technology, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi’an 710129, P. R. China |
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Abstract: | To overcome the aggregation of nanocrystals in a blend of inorganic material with conjugated polymers to prepare photovoltaic material, we used a co-solvent blend of CHCl3 with MeOH at a certain volume fraction to disperse inorganic nanocrystals. The results show that when the volume fraction of MeOH is 50%, ZnO nanocrystals with an average diameter of 30 nm disperse well in the co-solvent solution. Its application in photovoltaic material was investigated in this work, and the photoluminescence(PL) spectra show that when ZnO was 50%(volume fraction) in solution and 25%(volume fraction) in film, the fluorescence quenching reached the maximum values 83.34% and 64.4%, respectively, indicating that electron could transfer from conjugated polymer to electron-acceptor ZnO effectively. |
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Keywords: | ZnO nanocrystal Dispersion Co-solvent Photovoltaic material |
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