Photoelectrochemical-type sunlight photodetector based on MoS2/graphene heterostructure
Photoelectrochemical-type sunlight photodetector based on MoS2/graphene heterostructure
复制标题
基于MoS2/石墨烯异质结构的光电化学型太阳光光电探测器
DOI：
10.1088/2053-1583/2/3/035011
复制
发表时间：
2015-09-01
期刊：
影响因子：
5.5
通讯作者：
Zhang, Han
中科院分区：
文献类型：
--
作者：
Huang, Zongyu;Han, Weijia;Zhang, Han
我们制作了一种基于MoS 2/石墨烯异质结的新型太阳光光电探测器。通过简单的水热法沿着后续的退火过程以及随后的衬底诱导的高选择性成核和生长机制制备了MoS 2/石墨烯异质结构。通过X射线衍射（XRD）、拉曼光谱、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和紫外-可见吸收光谱仪对二维MoS 2/石墨烯异质结构的微观结构和形貌进行了实验验证。通过光电化学（PEC）测试系统进行的光响应研究表明，合成的MoS 2/石墨烯异质结构在太阳光照射下显示出比裸MoS 2和石墨烯更优越的上级光响应活性。提高的光响应性可以归因于增强的光吸收，强的光-物质相互作用和异质结构的非常有效的电荷分离。MoS 2/石墨烯异质结构的结构和性能表明其在光子学和光电子学领域具有广阔的应用前景。
We have fabricated a novel sunlight photo-detector based on a MoS2/graphene heterostructure. The MoS2/graphene heterostructure was prepared by a facile hydrothermal method along with a subsequent annealing process followed by a substrate-induced high selective nucleation and growth mechanism. The microstructures and morphologies of the two-dimensional MoS2/graphene heterostructure can be experimentally confirmed by x-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and a UV–vis absorption spectrometer. Photoresponse investigations performed by a photoelectrochemical (PEC) measurement system indicate that the synthesized MoS2/graphene heterostructure shows superior photoresponse activities under the illumination of sunlight in contrast with bare MoS2 and graphene. The improved photoresponsivity can be attributed to the enhanced light absorption, strong light–matter interaction and the extremely efficient charge separation of the heterostructure. The structure and performances of the MoS2/graphene heterostructure suggest promising applications in the field of photonics and optoelectronics.