摘要
光探测器是现代科学和工业体系的基础.近红外光伏型有机光探测器因其制造成本低、柔性、质轻和可大面积制备等诸多特性及其在生物成像、质量检测、图像传感、光通信和夜间监控等方面的应用而受到广泛关注.由于有机半导体材料高度可调的光学和电学特性,已经实现了窄带、低噪声、可见-近红外有机光探测器.近红外光伏型有机光探测器的研究在国内外引起了广泛兴趣,中国学者对推动此研究领域的发展做出了巨大贡献,并在新型近红外有机材料及近红外有机光伏(光二极管)器件等方面取得了一系列重要的创新成果.本文总结和评论了近红外光伏型有机光探测器的研究进展,并展望了其在近红外成像、生物医疗、光谱分析测试等领域的应用前景.
Photodetectors are the foundation of modern science and industrial systems.Organic semiconductors have developed rapidly in the past decade due to their appealing properties such as low-cost manufacturing,flexibility,light-weight,and large-area scalability.Near-infrared organic photovoltaic photodetectors have drawn extensive attention because of their wide applications in bioimaging,quality inspection,image sensing,optical communication and night surveillance.Owing to the highly tuneable optical and electrical properties of organic semiconductor materials,narrow-band,low noise,visible-blind near-infrared organic photodetectors have been achieved.The research on near-infrared organic photovoltaic photodetectors has aroused widespread interest at home and abroad.Chinese scholars have made great contributions to the development of this research field,and a series of important innovations have been made in the preparation of near-infrared organic materials and the design of near-infrared organic photodiode devices.This article aims to summarize and review the research progress of near-infrared organic photovoltaic photodetectors and their future development in the fields of imaging sensing,biomedicine and spectral analysis.In the first section,we briefly introduce the basic overview of the device structures,applications and important figures of merit of organic photodetectors.In the second section,we summarized the materials used in the active layer of the near-infrared photovoltaic organic photodetectors in the past decade,which are simply classified into organic near-infrared polymer materials and near-infrared small-molecule materials.In the third section,we reviewed the device optimization and design strategies of nearinfrared organic photovoltaic photodetectors,including the adjustment of active layer film thickness,charged carrier blocking layers,the strategies of charge collecting narrowing and exciton dissociation narrowing.In the fourth section,the specific applications and their scientific principles of near-infrared organic photodetectors are introduced,including real-time biological monitoring,spectral analysis and near-infrared imaging applications.In the last section,we briefly summarized the achievements which have been made,the current challenges and the future prospects of near-infrared organic photovoltaic photodetectors.
作者
郑英琦
陈勇杰
朱晓张
Ying-qi Zheng;Yong-jie Chen;Xiao-zhang Zhu(Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190)
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2022年第4期354-373,共20页
Acta Polymerica Sinica
基金
国家自然科学基金(基金号22175187,91833304)
国家重点研发计划(项目号2019YFA0705900)资助项目.
关键词
有机光探测器
有机光二极管
共轭高分子材料
共轭小分子材料
近红外响应
Organic photodetector
Organic photodiode
Conjugated polymer materials
Conjugated smallmolecule material
Near-infrared response
