基于“多重光反射”空腔耦合增强效应的Y-TiOPc NPs/MoS2 NTs异质结光敏材料的构筑

针对可见-近红外光敏材料在应用中存在无法兼具高光响应度、高外部量子效率和快光响应速率的问题，提出通过构筑具有“多重光反射”空腔耦合增强效应的Y型酞菁氧钛纳米粒子/二硫化钼纳米管（Y-TiOPc NPs/MoS2 NTs）异质结解决上述问题的研究思路。本项目拟采用硬模板法和酸刻蚀法调控MoS2 NTs的空腔结构，采用微乳液-相转移法和水热法实现Y-TiOPc NPs/MoS2 NTs异质结的原位构筑，以构建该异质结的微观组成结构在可见-近红外宽光谱光电探测器中的宏观光电探测性能表现为研究目标，以揭示该异质结材料的组成-结构-光敏特性之间的相互影响规律和构效平衡关系为研究主线，深入研究Y-TiOPc NPs、MoS2和纳米管三者之间的共敏化协同耦合增强作用机制，阐明该异质结微观组成结构对光生载流子的产生-分离-传输过程的内在影响规律，以期为高性能可见-近红外光敏材料的设计提供有价值的理论参考。

In order to solve the problem that visible-near infrared photosensitive materials cannot simultaneously possess high photoresponsivity, high external quantum efficiency and fast photoresponse rate in application, we propose to solve this problems by constructing Y-type titanylphthalocyanine nanoparticles/molybdenum disulfide nanotubes (Y-TiOPc NPs/MoS2 NTs) heterojunction with cavity coupling enhancement effect of “multiple light reflection”. In this project, the hard template method and acid etching method are used to control the cavity structure of MoS2 NTs. Microemulsion phase transfer method and hydrothermal method are used to realize the in-situ construction of Y-TiOPc NPs/MoS2 NTs heterojunction. The research objective is to investigate the effect of the microcomposition-structure of the heterojunction on the macroscopic photoelectric detection performance of the visible-near infrared wide spectrum photodetector. The research direction is to reveal the interaction law and structure-activity equilibrium relationship between the composition, structure and photosensitivity. The co-sensitization coupling enhancement mechanism among Y-TiOPc NPs, MoS2 and nanotubes are studied to clarify the internal influence of the microcomposition-structure of the heterojunction on the generation-separation-transport process of the photocarriers. Finally, the research results were expected to provide valuable theoretical reference for the design of high performance visible-near infrared photosensitive materials.