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- Title
Solvothermal synthesis of ZnO nanoparticles at low temperatures as cathode buffer layers for polymer solar cells with an inverted device structure.
- Authors
Luo, Jie; Liu, Qian; Zhang, Yong; Zhang, Wei; Feng, Zuyong; Hu, Peiju
- Abstract
Inverted polymer solar cells of the conventional poly(3-hexylthiophene) (P3HT):(6,6)-phenyl-C61butyric acid methyl ester (PCBM) blend on indium tin oxide substrates were fabricated. By using mixed-solvent dispersed ZnO nanoparticles (NPs) as cathode buffer layer, device performances are improved obviously. ZnO NPs with a size of 3-5 nm synthesized by solvothermal synthesis at 65 °C show relatively wide photoluminescence peak of 300-650 nm. Based on Hansen solubility parameter theory, a mathematical method was applied to calculate the Hansen solubility parameters of bi-solvent system to disperse ZnO NPs and the proportion of each component in the mixed solvent. This excellent dispersion for ZnO NPs in the bi-solvent system has a important influence on the performance of the device. Compared to other methods of ZnO nanofilm fabrication, this method reveals a simple, convenient, moderate and effective way to manufacture the favorable buffer layer in organic solar cells.
- Subjects
SOLAR cells; BUTYRATES; METHYL formate; INDIUM tin oxide; NANOPARTICLES
- Publication
Journal of Materials Science: Materials in Electronics, 2016, Vol 27, Issue 10, p10650
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-016-5162-5