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Updated: Jan 19, 2026
Compact Quantum Dots for Single-molecule Imaging
Published on: October 9, 2012
SnSe2 Quantum Dots: Facile Fabrication and Application in Highly Responsive UV-Detectors
Xiangyang Li1, Ling Li2, Huancheng Zhao3
1Shenzhen Key Laboratory of Laser Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China. 2170285209@email.szu.edu.cn.
Abstract:
Synthesizing quantum dots (QDs) using simple methods and utilizing them in optoelectronic devices are active areas of research. In this paper, we fabricated SnSe2 QDs via sonication and a laser ablation process. Deionized water was used as a solvent, and there were no organic chemicals introduced in the process. It was a facile and environmentally-friendly method. We demonstrated an ultraviolet (UV)-detector based on monolayer graphene and SnSe2 QDs. The photoresponsivity of the detector was up to 7.5 × 106 mAW-1, and the photoresponse time was ~0.31 s. The n-n heterostructures between monolayer graphene and SnSe2 QDs improved the light absorption and the transportation of photocarriers, which could greatly increase the photoresponsivity of the device.
