期刊
SCIENCE ADVANCES
卷 7, 期 16, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abf7358
关键词
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资金
- National Natural Science Foundation of China [61725505, 11734016, 61905266, 61904184, 61521005, 62004207, 31900748]
- Fund of Shanghai Natural Science Foundation [19XD1404100, 20YF1455900, 19YF1454600, 18ZR1445900, 18ZR1445800]
- China Postdoctoral Science Foundation [2019TQ0333, 2019TQ0334]
- Fund of SITP Innovation Foundation [CX-348]
This study focuses on the potential of highly crystalline tellurium (Te) nanowires and two-dimensional nanosheets synthesized by chemical vapor deposition in blackbody-sensitive infrared detection. The Te nanostructures exhibit high hole mobility and broadband detection, achieving high responsivity and blackbody responsivity, contributing to the advancement of high-resolution imaging technology.
Blackbody-sensitive room-temperature infrared detection is a notable development direction for future low-dimensional infrared photodetectors. However, because of the limitations of responsivity and spectral response range for low-dimensional narrow bandgap semiconductors, few low-dimensional infrared photodetectors exhibit blackbody sensitivity. Here, highly crystalline tellurium (Te) nanowires and two-dimensional nanosheets were synthesized by using chemical vapor deposition. The low-dimensional Te shows high hole mobility and broadband detection. The blackbody-sensitive infrared detection of Te devices was demonstrated. A high responsivity of 6650 A W-1 (at 1550-nm laser) and the blackbody responsivity of 5.19 A W-1 were achieved. High-resolution imaging based on Te photodetectors was successfully obtained. All the results suggest that the chemical vapor deposition-grown low-dimensional Te is one of the competitive candidates for sensitive focal-plane-array infrared photodetectors at room temperature.
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