Highly efficient and high transmittance semitransparent polymer solar cells with one-dimensional photonic crystals as distributed Bragg reflectors |
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| Affiliation: | 1. State Key Laboratory on Integrated Optoelectronics, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China;2. College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People’s Republic of China;3. School of Applied Physics and Materials, Institute of Thin Film and Nanomaterials, WuYi University, No. 22, Dongchen Cun, Jiangmen 529020, People’s Republic of China;1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People''s Republic of China;2. College of Computer Science and Engineering, Changchun University of Technology,Changchun 130012, People''s Republic of China;3. School of Applied Physics and Materials, Institute of Thin Film and Nanomaterials, WuYi University, No. 22, Dongchen Cun, Jiangmen 529020, People''s Republic of China;1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People?s Republic of China;2. School of Applied Physics and Materials, Institute of Thin Film and Nanomaterials, WuYi University, No. 22, Dongchen Cun, Jiangmen 529020, People?s Republic of China |
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| Abstract: | We demonstrate that one-dimensional photonic crystals as distributed Bragg reflectors can effectively improve the performance of semitransparent polymer solar cells (PSCs) based on the blend of P3HT:ICBA. The one dimensional distributed Bragg reflectors (1D DBRs) are composed of N pairs of WO3/LiF which are thermally evaporated on Ag anode. Due to its photonic bandgap, 1D DBRs can reflect the light totally back into the PSCs when the high reflectance range of 1D DBRs is well matched with absorption spectrum of the active layer. A maximum power conversion efficiency (PCE) of 4.12%, a highest transmittance of 80.4% at 660 nm and an average transmittance of 55.6% in the wavelength range of 600–800 nm are obtained in the case of N = 8, corresponding enhancement of 24.1% in PCE when compared with the device without the 1D DBRs. |
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| Keywords: | Semitransparent polymer solar cells One-dimensional photonic crystals Distributed Bragg reflectors |
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