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- Title
Visible and Infrared Photoresponse in (V<sub>0.99</sub>Cr<sub>0.01</sub>)<sub>2</sub>O<sub>3</sub> Epitaxial Films.
- Authors
Fan, Zihao; Zhao, Guocheng; Zhao, Zhuan; Ge, Jun; Pan, Shusheng
- Abstract
Herein, an infrared (IR) photodetector has been demonstrated by depositing the (V0.99Cr0.01)2O3 films on top of a sapphire (Al2O3) wafer. The photoresponse properties, including photocurrent, voltage, responsivity, and response speed, at different temperatures and wavelengths are explored. The results showed that the deposited samples produce a significant photoresponse in the near‐IR (NIR) light. In particular, as temperature increases from 298 K (25 °C) to 453 K (180 °C), the responsivity of (V0.99Cr0.01)2O3 films improves from 7.4 to 49.4 mA W−1 under 5 V biased 940 nm laser irradiation, and it holds the quick response for about 5 s. The findings indicate that (V0.99Cr0.01)2O3 film is a promising candidate material for IR photodetector and temperature‐dependent optical delay triggers.
- Subjects
PHOTODETECTORS; ALUMINUM oxide; SAPPHIRES; VOLTAGE; WAVELENGTHS; PHOTOTHERMAL effect
- Publication
Physica Status Solidi. A: Applications & Materials Science, 2023, Vol 220, Issue 1, p1
- ISSN
1862-6300
- Publication type
Article
- DOI
10.1002/pssa.202200514