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Effect of Transient and Steady-State Current on the Photothermal Performance of a UVC-LED.
- Source :
- Journal of Electronic Materials; Jan2022, Vol. 51 Issue 1, p119-125, 7p
- Publication Year :
- 2022
-
Abstract
- A UVC-LED is a deep ultraviolet LED with a wavelength of 200–280 nm, which has a wide range of applications in disinfection, water purification and other fields. However, UVC-LED chips have limitations of high heat and poor heat dissipation, so it is necessary to test and analyze the thermal and optical properties of UVC-LEDs. This paper studies the photothermal characteristics of a UVC-LED under different driving currents. By measuring and analyzing the radiation flux, radiation intensity, junction temperature and thermal resistance of the UVC-LED under different driving currents, it is found that the junction temperature of the UVC-LED under the transient and steady state increases with the increase in the driving current, while the thermal resistance decreases. The radiation flux and intensity of the UVC-LED increase with the increase in driving current. The peak wavelength appears as a redshift with the increase in current, and the half-wave width also increases with the increase in current. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03615235
- Volume :
- 51
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Journal of Electronic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 154174288
- Full Text :
- https://doi.org/10.1007/s11664-021-09268-x