| 초록 |
Photodetectors are of great interest in the digital age for wide range applications such as optical communications, remote sensing and digital imaging. In general, GaN-, Si-, and InGaAs- based single crystalline photodetectors are used for the three important sub-bands: UV, visible, NIR, respectively. Despite of commercially available performances of these photodetectors, it would be advantageous to have a low-cost, multicolor, low-power and environmentally benign photodetectors with high quantum efficiency, high sensitivity and high speed. Organic semiconductors and nanocrystals offer particular advantages for these photodetector applications. Here I review recent progress in solution-processed photodetectors and their applications in everyday and high-end applications, including my own works. Methodologies to build up solution processed photodetectors with high photoconductive gain-bandwidth product are highlighted, together with physical origins behind those results. |
