Enhancing the light absorbance of polymer solar cells by introducing pulsed laser-deposited CuIn0.8Ga0.2Se2 nanoparticles |
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| Authors: | Yu Zhao Hui Li Xu-Jun Liu Lei-Lei Guan Yan-Li Li Jian Sun Zhi-Feng Ying Jia-Da Wu Ning Xu |
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| Affiliation: | 1.Department of Optical Science and Engineering, Shanghai Ultra-Precision Optical Manufacturing Engineering Center, Fudan University, Shanghai 200433, People’s Republic of China;2.Department of Physics, Shanghai Electric Power University, Shanghai 201300, China |
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| Abstract: | Evenly separated crystalline CuIn0.8Ga0.2Se2 (CIGS) nanoparticles are deposited on ITO-glass substrate by pulsed laser deposition. Such CIGS layers are introduced between conjugated polymer layers and ITO-glass substrates for enhancing light absorbance of polymer solar cells. The P3HT:PCBM absorbance between 300 and 650 nm is enhanced obviously due to the introduction of CIGS nanoparticles. The current density-voltage curves of a P3HT:PCBM/CIGS solar cell demonstrate that the short-circuit current density is improved from 0.77 to 1.20 mA/cm2. The photoluminescence spectra show that the excitons in the polymer are obviously quenched, suggesting that the charge transfer between the P3HT:PCBM and CIGS occurred. The results reveal that the CIGS nanoparticles may exhibit the localized surface plasmon resonance effect just as metallic nanostructures.PACS61.46. + w; 61.41.e; 81.15.Fg; 81.07.b |
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| Keywords: | CuIn0 8Ga0 2Se2 nanoparticles P3HT:PCBM Pulsed laser deposition Absorption Polymer solar cells Photoluminescence |
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