Advances in Polymethine Dyes for Near-Infrared Organic Photodiodes  

作　　者：Jin He Qi Xiao Ming Shao Zhong'an Li 

机构地区：[1]Key Laboratory for Material Chemistry of Energy Conversion and Storage,Ministry of Education,School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan,Hubei,430074 China [2]Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan,Hubei,430074 China

出　　处：《Chinese Journal of Chemistry》2023年第11期1399-1416,共18页中国化学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21975085 and 22175067);the excellent Youth Foundation of Hubei Scientific Committee(No.2021CFA065);the Innovation and Talent Recruitment Base of New Energy Chemistry and Device(No.B21003);the Fundamental Research Funds for the Central Universities(No.2021yjsCXCY060).

摘　　要：Near-infrared organic photodiodes (NIR OPDs) have tremendous potential in industrial, military, and scientific applications, due to their unique features of lightweight, low toxicity, high structural flexibility, cooling-system-free, etc. However, the overall performance of currently available NIR OPDs still lags behind the commercial inorganic photodetectors, ascribed to the critical challenge of realizing organic semiconductors with sufficiently low optical bandgap and excellent optoelectronic properties simultaneously. Among various types of NIR-absorbing organic semiconductors, polymethine dyes not only possess advantages of simple synthesis and structural diversity, but also show fascinating optical and aggregation features in the solid state, making them attractive material candidates for NIR OPDs. In this review, after a brief introduction of NIR OPDs and polymethine dyes, we comprehensively summarize the advances of polymethine dyes for broadband and narrowband NIR OPDs, and further introduce their applications in all-organic optical upconversion devices and photoplethysmography sensors. In particular, the relationship between the chemical structure and the aggregation behaviors of polymethine dyes and the device performance is carefully discussed, providing some important molecular insights for developing high performance NIR OPDs.

关 键 词：Near-infrared organic photodiodes Dyes/Pigments Polymethine dyes Aggregation Optical upconversion device Photoplethysmography sensor Photoelectric performances 

分 类 号：TN383[电子电信—物理电子学]