Hot‐electron emission‐driven energy recycling in transparent plasmonic electrode for organic solar cells

InfoMat

Chao‐Chao Qin¹  Jia‐Jia Guo¹  Qing‐Dong Ou²  Hao Ren³  Jian‐Xin Tang³  Jing‐De Chen³  Ling Li³  Feng‐Ming Xie³  Shi‐Jie Zou³  Xianjie Liu⁴  Yan‐Qing Li⁵ 

[1] College of Physics and Materials Science Henan Normal University Xinxiang Henan China;Department of Materials Science and Engineering Monash University Clayton Victoria Australia;Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University Suzhou Jiangsu China;Laboratory of Organic Electronics, Department of Science and Technology (ITN) Linköping University Norrköping Sweden;School of Physics and Electronic Science, Ministry of Education Nanophotonics & Advanced Instrument Engineering Research Center East China Normal University Shanghai China;

关键词: energy recycling;    hot‐electron emission;    organic solar cells;    plasmonic electrode;    surface plasmon polariton;   

DOI  :  10.1002/inf2.12285

来源: DOAJ

【 摘 要 】

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%.

【 授权许可】

Unknown