Towards optimization of functionalized single-walled carbon nanotubes adhering with poly(3-hexylthiophene) for highly efficient polymer solar cells |
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| Affiliation: | 1. Laboratory of Nanotechnology and Microsystems, Mechanical Engineering College, Shijiazhuang 050000, China;2. Institute of Semiconductors, Chinese Academy of Science, Beijing 100084, China;1. Department of Applied Science, University of Technology, Baghdad, Iraq;2. Department of Chemical Engineering, University of Suleyman Demirel, Isparta, Turkey;3. Department of Chemical Engineering, University of Technology, Baghdad, Iraq;1. School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, People''s Republic of China;2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, People''s Republic of China;1. Department of Physics, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, China;2. Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan, Shanxi, 030024, China;3. School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, 111 West Chang Jiang Road, Huaian, 223300, China;1. Department of Physics, Shahid Beheshti University (SBU), Evin, 1983969411, Tehran, Iran;2. The Abdus Salam International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151, Trieste, Italy;3. Istituto Nazionale di Fisica Nucleare, Italy, Area Science Park, Padriciano 99, 34149, Trieste, Italy |
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| Abstract: | In this paper, we present the optimization of single-walled carbon nanotubes (SWCNTs) by acid-treatment, solution ultrasonication time and dispersion in photoactive layer for efficient organic solar cells. After non-covalently adhering with poly(3-hexylthiophene) (P3HT), pre-functionalized SWCNTs were blended into the composites of P3HT and 6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as photoactive layer, and a maximum power conversion efficiency (PCE) of 3.02% with a short-circuit current density of 11.46 mA/cm2 was obtained from photovoltaic cell indium-tin oxide (ITO)/poly(ethylene-dioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS)/P3HT:PCBM:SWCNTs/Al with an optimum 0.3 wt% SWCNTs in P3HT:PCBM:SWCNTs nanocomposite, the PCE can be enhanced by more than 10% as compared to the control device ITO/PEDOT:PSS/P3HT:PCBM/Al. The performance improvement by incorporating with functionalized SWCNTs is mainly attributed to the extension of excitons dissociation area and fastening charge carriers transfer across the active layer. |
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