Hot‐electron emission‐driven energy recycling in transparent plasmonic electrode for organic solar cells
Jing‐De Chen,
Ling Li,
Chao‐Chao Qin,
Hao Ren,
Yan‐Qing Li,
Qing‐Dong Ou,
Jia‐Jia Guo,
Shi‐Jie Zou,
Feng‐Ming Xie,
Xianjie Liu,
Jian‐Xin Tang
Affiliations
Jing‐De Chen
Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University Suzhou Jiangsu China
Ling Li
Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University Suzhou Jiangsu China
Chao‐Chao Qin
College of Physics and Materials Science Henan Normal University Xinxiang Henan China
Hao Ren
Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University Suzhou Jiangsu China
Yan‐Qing Li
School of Physics and Electronic Science, Ministry of Education Nanophotonics & Advanced Instrument Engineering Research Center East China Normal University Shanghai China
Qing‐Dong Ou
Department of Materials Science and Engineering Monash University Clayton Victoria Australia
Jia‐Jia Guo
College of Physics and Materials Science Henan Normal University Xinxiang Henan China
Shi‐Jie Zou
Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University Suzhou Jiangsu China
Feng‐Ming Xie
Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University Suzhou Jiangsu China
Xianjie Liu
Laboratory of Organic Electronics, Department of Science and Technology (ITN) Linköping University Norrköping Sweden
Jian‐Xin Tang
Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University Suzhou Jiangsu China
Abstract Plasmonic metal electrodes with subwavelength nanostructures are promising for enhancing light harvesting in photovoltaics. However, the nonradiative damping of surface plasmon polaritons (SPPs) during coupling with sunlight results in the conversion of the excited hot‐electrons to heat, which limits the absorption of light and generation of photocurrent. Herein, an energy recycling strategy driven by hot‐electron emission for recycling the SPP energy trapped in the plasmonic electrodes is proposed. A transparent silver‐based plasmonic metal electrode (A‐PME) with a periodic hexagonal nanopore array is constructed, which is combined with a luminescent organic emitter for radiative recombination of the injected hot‐electrons. Owing to the suppressed SPP energy loss via broadband hot‐electron emission, the A‐PME achieves an optimized optical transmission with an average transmittance of over 80% from 380 to 1200 nm. Moreover, the indium‐tin‐oxide‐free organic solar cells yield an enhanced light harvesting with a power conversion efficiency of 16.1%.
