Jin Weifeng, Hu Luodan
Key Laboratory of Optoelectronic Technology & Systems of Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
Nanomaterials (Basel). 2019 Sep 23;9(10):1359. doi: 10.3390/nano9101359.
During the past 15 years, quasi one-dimensional (1D) Cadmium Selenide (CdSe) nanomaterials have been widely investigated for high-performance electronic and optoelectronic devices, due to the unique geometrical and physical properties. In this review, recent advancements on diverse synthesis methods of 1D CdSe nanomaterials and the application in photodetectors have been illustrated in detail. First, several bottom-up synthesis methods of 1D CdSe nanomaterials have been introduced, including the vapor-liquid-solid method, the solution-liquid-solid method, and electrochemical deposition, etc. Second, the discussion on photodetectors based on 1D CdSe nanomaterials has been divided into three parts, including photodiodes, photoconductors, and phototransistors. Besides, some new mechanisms (such as enhancement effect of localized surface plasmon, optical quenching effect of photoconductivity, and piezo-phototronic effect), which can be utilized to enhance the performance of photodetectors, have also been elaborated. Finally, some major challenges and opportunities towards the practical integration and application of 1D CdSe nanomaterials in photodetectors have been discussed, which need to be further investigated in the future.
在过去的15年里，准一维（1D）硒化镉（CdSe）纳米材料因其独特的几何和物理性质，在高性能电子和光电器件方面受到了广泛研究。在这篇综述中，详细阐述了一维CdSe纳米材料各种合成方法的最新进展及其在光电探测器中的应用。首先，介绍了几种一维CdSe纳米材料的自下而上合成方法，包括气-液-固法、溶液-液-固法和电化学沉积等。其次，基于一维CdSe纳米材料的光电探测器讨论分为三个部分，包括光电二极管、光电导体和光电晶体管。此外，还阐述了一些可用于提高光电探测器性能的新机制（如局域表面等离子体增强效应、光电导的光学猝灭效应和压光电子效应）。最后，讨论了一维CdSe纳米材料在光电探测器中的实际集成和应用面临的一些主要挑战和机遇，这些在未来还需要进一步研究。
