Nanosilver surface plasmon response enhanced the photovoltaic performance of organic solar cells |
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| Authors: | Yinglian Wang Haiyan Wang Xiaobo Xing |
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| Affiliation: | 1. Department of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi 333403, China;2. MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, South China Normal University, Guangzhou, Guangdong 510631, China;3. Guangzhou Institute of Measurement & Testing, Guangzhou 510663, China |
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| Abstract: | ![]()
Nanosilver island thin films with different thickness were synthesized by vacuum vapor deposition between ITO and PEDOT:PSS for organic solar cells, forming the structure of ITO/AgNPs layer/PEDOT:PSS/P3HT:PCBM/LiF/Al. Surface morphology and UV–vis absorption spectrum were investigated by AFM and UV–vis scanning spectrophotometer. It was found that after adding the nanosilver film, the optical properties of the device were enhanced with increasing the thickness of nanosilver island films. When the thickness of nanosilver thin films is 3.0 nm, the most significant surface plasmon response and red-shift of the resonance absorption peak appeared. Meanwhile, short circuit current density of the device increased from 9.93 mA/cm2 to 12.98 mA/cm2, the fill factor increased from 49.35% to 52.79% and the power conversion efficiency increased from 3.05% to 4.01%. These results provided a theoretical guidance to optimize the design and increase the performance of solar cells. |
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| Keywords: | Ag nanofilms Vacuum vapor deposition Organic solar cells Surface plasmon response |
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