Infectious Microecology in Immunodeficiency Diseases

Yang, Jin; Wu, Nanping

doi:10.1007/978-3-662-43883-1_21

Cited by 1 publication

(1 citation statement)

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“…LEDs have the advantages of high luminous efficiency, fast response speed, long life, high reliability, environmentally friendly nature and no harmful emissions, and are considered a new-generation green source of lighting. 1,2 In recent years, UVC-LEDs have been widely used in sterilization, medical cosmetology, the military industry and other fields due to their advantages of mercury-free environmental protection, low power consumption and compact structure. 3 According to the wavelength range, ultraviolet light waves can be divided into ultraviolet A (UVA, 315-400 nm), UVB (280-315 nm), UVC (200-280 nm), and vacuum ultraviolet (VUV, 100-200 nm).…”

Section: Introductionmentioning

confidence: 99%

Effect of Transient and Steady-State Current on the Photothermal Performance of a UVC-LED

Wang

Zou

Yang

et al. 2021

J. Electron. Mater.

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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.

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Section: Introductionmentioning

confidence: 99%