Photodetectors(PDs)are optoelectronic devices that convert optical signals into electrical responses.Recently,there has been a tremendous increase in research interest in PDs based on colloidal quantum dots(QDs)and tw...Photodetectors(PDs)are optoelectronic devices that convert optical signals into electrical responses.Recently,there has been a tremendous increase in research interest in PDs based on colloidal quantum dots(QDs)and two-dimensional(2D)material heterostructures owing to the strong light-absorption capacity and the well-adjustable band gap of QDs and the superior charge carriers transfer ability of 2D materials.In particular,the heterojunction formed between QDs and 2D materials can effectively enhance the separation and transport of photogenerated charge carriers,which is expected to establish PDs with ultrahigh photoconductive gain,high responsivity,and detectivity.This review aimed to summarize the state-of-the-art advances in the research of QDs/2D material nanohybrid PDs,including the device parameters,archi-tectures,working mechanisms,and fabrication technologies.The prog-ress of hybrid PDs based on the heterojunction of QDs with different 2D materials,along with their innovative applications,are comprehensively described.In the end,the challenges and feasible strategies in future research and development are briefly proposed.展开更多
基金support from the National Key Research and Development Program of China (No.2019YFE0121600)National Natural Science Foundation of China (No.22105031)+3 种基金Sichuan Science and Technology Program (No.2021YFH0054,2023JDGD0011)Fundamental Research Funds for the Central Universities (ZYGX2020J028)Gurpreet Singh Selopal acknowledges the DAL-AC for the financial support and NSERC Discovery Grant.Zhiming Wang acknowledges the National Key Research and Development Program of China (No.2019YFB2203400)the“111 Project” (No.B20030).
文摘Photodetectors(PDs)are optoelectronic devices that convert optical signals into electrical responses.Recently,there has been a tremendous increase in research interest in PDs based on colloidal quantum dots(QDs)and two-dimensional(2D)material heterostructures owing to the strong light-absorption capacity and the well-adjustable band gap of QDs and the superior charge carriers transfer ability of 2D materials.In particular,the heterojunction formed between QDs and 2D materials can effectively enhance the separation and transport of photogenerated charge carriers,which is expected to establish PDs with ultrahigh photoconductive gain,high responsivity,and detectivity.This review aimed to summarize the state-of-the-art advances in the research of QDs/2D material nanohybrid PDs,including the device parameters,archi-tectures,working mechanisms,and fabrication technologies.The prog-ress of hybrid PDs based on the heterojunction of QDs with different 2D materials,along with their innovative applications,are comprehensively described.In the end,the challenges and feasible strategies in future research and development are briefly proposed.
