Sui Jinggao, Lan Xiang, Ao Zhikang, Cao Jinhui
Defense Innovation Institute, Academy of Military Sciences, Beijing 100071, China.
School of Materials Science and Engineering, Hunan University, Changsha 410082, China.
Nanomaterials (Basel). 2024 Nov 30;14(23):1935. doi: 10.3390/nano14231935.
Transition metal dichalcogenides (TMDs), such as tungsten diselenide (WSe), are expected to be used in next-generation optoelectronic devices due to their unique properties. In this study, we developed a simple method of using ethanol to scroll monolayer WSe nanosheets into nanoscrolls. These nanoscrolls have a quasi-one-dimensional structure, which enhances their electronic and optical properties. The characterization confirmed their unique structure, and the photodetectors made of these nanoscrolls have high sensitivity to polarized light, with anisotropy ratios of 1.3 and 1.7 at wavelengths of 638 nm and 808 nm. The enhanced light response is attributed to the large surface area and quantum wire-like behavior of the nanoscrolls, making them suitable for advanced polarization-sensitive devices.
过渡金属二硫属化物（TMDs），如二硒化钨（WSe），因其独特的性质有望用于下一代光电器件。在本研究中，我们开发了一种简单的方法，即使用乙醇将单层WSe纳米片卷成纳米卷。这些纳米卷具有准一维结构，增强了它们的电学和光学性质。表征证实了它们独特的结构，由这些纳米卷制成的光电探测器对偏振光具有高灵敏度，在638 nm和808 nm波长下的各向异性比分别为1.3和1.7。增强的光响应归因于纳米卷的大表面积和量子线状行为，使其适用于先进的偏振敏感器件。
