Decahedral-shaped Au nanoparticles as plasmonic centers for high performance polymer solar cells |
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| Affiliation: | 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, Beijing Key Laboratory of Novel Thin Film Solar Cells, North China Electric Power University, Beijing 102206, China;2. Nanomaterials and Chemistry Key Laboratory, Wenzhou University, Wenzhou 325027, China;3. Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China;1. School of Materials Engineering, Yancheng Institute of Technology, Yancheng, 224051, PR China;2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, PR China;3. College of Mechanical and Electrical Engineering, Yangtze Normal University, Chongqing, 408100, PR China;1. School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea;2. Electronics and Telecommunications Research Institute, Daejeon, 34129, South Korea;1. Institute of Mathematics and Physics, Central South University of Forestry & Technology, Changsha 410004, China;2. School of Physics and Electronics, Central South University, Changsha 410083, China;1. Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha 410082, China;2. Synergetic Innovation Center for Quantum Effects and Applications of Hunan, Changsha 410081, China;1. Istituto di Struttura della Materia ISM-CNR, Via Fosso del Cavaliere 100, 00133 Roma, Italy;2. Center of Materials Technology & Photonics Technological Educational Institute (TEI) of Crete and, Electrical Engineering Department TEI of Crete, Heraklion, 71004 Crete, Greece;3. European Synchrotron Radiation Facility, 6 Jules Horowitz, 38000 Grenoble, France;4. Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology Hellas (FORTH), & Dept. of Materials Science and Technology, Univ. of Crete, Heraklion, Crete, Greece |
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| Abstract: | The photon harvesting of the photoactive layer within a multilayered polymer solar cells (PSCs) greatly affects the output electric power of the devices. For PSCs, the device performance is very sensitive to the photoactive layer thickness. Therefore, how to enhance the light absorption of the photoactive film with fixed thickness is still a big challenge. Plasmonic enhancement induced by noble metal nanoparticles has been proved to be an effective way to enhance light trapping inside the photoactive film without increasing the thickness of film. By incorporating Au decahedra into the poly(3,4-ethylenedioxythiophene): poly(4-styrenesulfonate) (PEDOT:PSS) anode buffer layer, high performance plasmonic PSCs based on P3HT:PC60BM and PBDT-TS1:PC70BM were fabricated and the light response of the PSCs are greatly improved in a broadband wavelength, resulting in a remarkable enhancement in short-circuit current density. The calculation results of finite difference time domain (FDTD) confirm that the plasmonic effects induce enhancement in device performance. Upon optimization, the best power conversion efficiency (PCE) of the device based on P3HT:PC60BM and PBDT-TS1:PC70BM reaches 4.14% and 10.29%, respectively, among the best values reported in literature. These results can provide valuable guidelines for the design of metal nanostructures for organic photovoltaic applications. |
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| Keywords: | Polymer solar cell Plasmonic effect Au decahedra Anode buffer layer |
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