Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore.
Center for Advanced 2D Materials and Graphene Research Center, National University of Singapore, 6 Science Drive 2, Singapore, 117546, Singapore.
Angew Chem Int Ed Engl. 2016 Sep 19;55(39):11945-9. doi: 10.1002/anie.201603557. Epub 2016 Sep 7.
A high-performance 2D photodetector based on a bilayer structure comprising a WSe2 monolayer and CH3 NH3 PbI3 organolead halide perovskite is reported. High performance is realized by modification of the WSe2 monolayer with laser healing and perovskite functionalization. After modification, the output of the device was three orders of magnitude better than the pristine device; the performance is superior to that of most of the 2D photodetectors based on transition-metal-dichalcogenides (TMDs). This result indicates that combinatory TMDs-halide perovskite hybrids can be promising building blocks in optoelectronics.
本文报道了一种基于 WSe2 单层和 CH3NH3PbI3 有机卤化铅钙钛矿双层结构的高性能二维光电探测器。通过激光修复和钙钛矿功能化对 WSe2 单层进行改性，实现了高性能。改性后，器件的输出比原始器件高出三个数量级；性能优于大多数基于过渡金属二卤化物（TMDs）的二维光电探测器。这一结果表明，组合 TMDs-卤化物钙钛矿杂化材料有望成为光电领域的有前途的构建模块。
