TiO2 QDs/MoSe2 heterojunctions for enhanced photo-excited charge separation and gas sensing performance

被引：12
|
作者：
Yang, Bing [1 ]
Song, Yue [1 ]
Song, Yang [1 ]
Ma, Ziyu [1 ]
Sun, Jianbo [1 ]
机构：
[1] Harbin Normal Univ, Sch Phys & Elect Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2023年 / 379卷
关键词：
Heterojunctions; Charge separation; NO 2 gas sensor;
D O I：
10.1016/j.snb.2022.133124
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
2D transition metal selenides are facing challenges in the field of gas sensing due to their short carrier lifetime and low utilization rate. Along these lines, in this work, MoSe2 nanosheets were successfully synthesized by solvothermal method, and modified with TiO2 QDs. P-N heterostructures with the advantage of quantum dot constraint effect are constructed. The developed heterojunction can effectively promote the separation and transfer of the generated charges, under the excitation of ultraviolet light, while the room temperature sensitivity of the material for the detection of NO2 is enhanced.
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页数：8
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