Perovskite solar cells(PSCs)are becoming a promising candidate for next-generation photovoltaic cells due to their attractive power conversion efficiency(PCE).Plasmonic enhancement is regarded as an opti-cal tuning approach for further improving the PCE of single-junction PSCs toward Shockley-Queisser limit.Herein,we introduce molecularly isolated gold nanorods(Au NRs),bearing relatively stronger scat-tering ability and localized surface plasmonic resonance(LSPR)effect,in the rear side of perovskites in PSCs,for promoting light harvesting and for electrical enhancement.Owing to the larger refractive index and better matched energy level alignment,the 4-mercaptobenzoic acid molecules coated on Au NRs prove to play important dual roles:isolating the metallic Au NRs from contacting with perovskite,and facilitating more efficient charge separation and transport across the interface under the synergetic LSPR effect of Au NRs.Our work highlights the capability of the plasmonic approach by nanorods and by molecular isolation,extending nanoparticle-based plasmonic approaches,toward highly efficient plasmon-enhanced PSCs.

Yong Hui;En-Ming You;Qing-Peng Luo;Tan Wang;Zi-Ang Nan;Yu Gu;Wen-Han Zhang;Zhuan-Yun Cai;Liang Chen;Jian-Zhang Zhou;Jia-Wei Yan;Zhao-Xiong Xie;Bing-Wei Mao;Zhong-Qun Tian

State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry,College of Chemistry and Chemical Engineering,Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM),Xiamen University,Xiamen 361005,Fujian,China;School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200241,China

能源化学

[1]Yong Hui;En-Ming You;Qing-Peng Luo;Tan Wang;Zi-Ang Nan;Yu Gu;Wen-Han Zhang;Zhuan-Yun Cai;Liang Chen;Jian-Zhang Zhou;Jia-Wei Yan;Zhao-Xiong Xie;Bing-Wei Mao;Zhong-Qun Tian-.Efficient plasmon-enhanced perovskite solar cells by molecularly isolated gold nanorods)[J].能源化学,2022(10):60-67

mercaptobenzoic

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