Exciton diffusion and dissociation in organic and quantum-dot solar cells  

作　　者：Dan He Miao Zeng Zhenzhen Zhang Yang Bai Guichuan Xing Hui-Ming Cheng Yuze Lin 

机构地区：[1]Department of Metallurgy and Applied Physical Chemistry,College of Chemistry and Chemical Engineering,Central South University,Changsha,China [2]Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Organic Solids,Institute of Chemistry,Chinese Academy of Sciences,Beijing,China [3]Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen,China [4]Joint Key Laboratory of the Ministry of Education,Institute of Applied Physics and Materials Engineering,University of Macao,Macao,China [5]University of Chinese Academy of Sciences,Beijing,China [6]Australian Institute for Bioengineering and Nanotechnology,The University of Queensland Brisbane,St Lucia,Queensland,Australia

出　　处：《SmartMat》2023年第6期11-30,共20页智能材料（英文）

基　　金：The authors thank the National Natural Science Foundation of China(Nos.52173189,22105208,61935017);Hunan Provincial Natural Science Foundation of China(No.2022JJ40570);the Science and Technology Development Fund,Macao SAR(No.FDCT-0044/2020/A1);UM's Research Fund(No.MYRG2020-00151-IAPME);Shenzhen Institute of Advanced Technology,and the Chinese Academy of Sciences for financial support.

摘　　要：For the process of photovoltaic conversion in organic solar cells(OSCs)and quantum-dot solar cells(QDSCs),three of four steps are determined by exciton behavior,namely,exciton generation,exciton diffusion,and exciton dissociation.Therefore,it is of great importance to regulate exciton behavior in OSCs and QDSCs for achieving high power conversion efficiency.Due to the rapid development in materials and device fabrication,great progress has been made to manage the exciton behavior to achieve prolonged exciton diffusion length and improved exciton dissociation in recent years.In this review,we first introduce the parameters that affect exciton behavior,followed by the methods to measure exciton diffusion length.Then,we provide an overview of the recent advances with regard to exciton behavior investigation in OSCs and QDSCs,including exciton lifetime,exciton diffusion coefficient,and exciton dissociation.Finally,we propose future directions in deepening the understanding of exciton behavior and boosting the performance of OSCs and QDSCs.

关 键 词：exciton behavior exciton diffusion exciton dissociation organic solar cells quantum-dot solar cells 

分 类 号：O47[理学—半导体物理]