异质结
材料科学
光电子学
光电探测器
响应度
化学气相沉积
单层
吸收(声学)
纳米片
剥脱关节
量子效率
纳米技术
石墨烯
复合材料
作者
Cheng Zhang,Biyuan Zheng,Guangcheng Wu,Xueying Liu,Jiaxin Wu,Chengdong Yao,Yizhe Wang,Zilan Tang,Ying Chen,Lizhen Fang,Luying Huang,Dong Li,Shengman Li,Anlian Pan
出处
期刊:Nano Research
[Springer Nature]
日期:2023-08-19
卷期号:17 (3): 1856-1863
被引量:19
标识
DOI:10.1007/s12274-023-6021-3
摘要
Transition metal dichalcogenides (TMDCs) are promising candidates for future optoelectronic devices accounting for their high carrier mobility and excellent quantum efficiency. However, the limited light absorption efficiency in atomically thin layers significantly hinders photocarrier generation, thereby impairing the optoelectronic performance and hindering practical applications. Herein, we successfully synthesized In2Se3/WSe2 heterostructures through a typical two-step chemical vapor deposition (CVD) method. The In2Se3 nanosheet with strong light absorption capability, serving as the light absorption layer, was integrated with the monolayer WSe2, enhancing the photosensitivity of WSe2 significantly. Upon laser irradiation with a wavelength of 520 nm, the In2Se3/WSe2 heterostructure device shows an ultrahigh photoresponsivity with a value as high as 2333.5 A/W and a remarkable detectivity reaching up to 6.7 × 1012 Jones, which is the highest among almost the reported TMDCs-based heterostructures grown via CVD even some fabricated by mechanical exfoliation (ME). Combing the advantages of CVD method such as large scale, high yield, and clean interface, the In2Se3/WSe2 heterostructures would provide a novel path for future high-performance optoelectronic device.
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