An efficient polymer solar cell using graphene oxide interface assembled via layer-by-layer deposition |
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| Affiliation: | 1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, 457 Zhongshan Road, Dalian 116023, PR China;2. Graduate University of Chinese Academy of Sciences, Beijing 100049, PR China;1. School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People’s Republic of China;2. Department of Physics, Jining University, Qufu 273155, People’s Republic of China;1. School of Optoelectronic and Communication Engineering, Xiamen University of Technology, Xiamen 361024, China;2. Key Laboratory of Modern Precision Measurement and Laser Nondestructive Detection, Putian University, Putian 351100, China;3. Fujian Key Laboratory of Optoelectronic Technology and Devices, Xiamen University of Technology, Xiamen 361024, China;1. Department of Chemical Engineering, National Tsing Hua University, #101, Sec. 2, Kuang-Fu Road, Hsinchu 30013, Taiwan;2. Department of Chemical Engineering and R&D Center for Membrane Technology, Chung Yuan Christian University, #200 Chung-Pei Road, Chungli, Taoyuan 32023, Taiwan;1. Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, USA;2. Evans Analytical Group® (EAG), East Windsor, NJ 08520, USA;3. Center for Organic Photonics and Electronics and School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA |
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| Abstract: | Graphene oxide (GO) is widely used as an interfacial material in applications such as organic light emitting diodes and photovoltaic devices. Herein we report a layer-by-layer (LbL) assembled GO thin film as an anode interfacial layer (AIL) for efficient polymer solar cells (PSCs). The GO thin film is fabricated by alternately depositing cationic polyelectrolyte poly(diallyldimethylammonium chloride) (PDDA) and GO on ITO/glass substrate, which possesses controllable thickness by adjusting LbL deposition frequency. The presence of ultrathin GO films improves the work function of ITO, leading to a better contact between the active layer and ITO anode. With the optimized number of deposition times, the efficiency of 6.04% for the PSC with PDDA-GO bilayer (GO-2) as the AIL was achieved. |
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| Keywords: | Graphene oxide Layer-by-layer assembly Anode interfacial layer Polymer solar cells |
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