The Optical Characteristics of 20 Watt Far-UVC Light and Its Application for Disinfection Chamber

  Nidya Chitraningrum (1*), Yusuf Nur Wijayanto (2), Hana Arisesa (3), Indra Sakti (4), Dadin Mahmudin (5), Budi Prawara (6), Deni Permana Kurniadi (7), Pamungkas Daud (8)

(1) Research Center for Biomass and Bioproduct, National Research and Innovation Agency - Indonesia
(2) Research Center for Electronics, National Research and Innovation Agency - Indonesia
(3) Faculty of Electrical Engineering, Universiti Teknologi Malaysia - Malaysia
(4) Faculty of Electrical Engineering, Universiti Teknologi Malaysia - Malaysia
(5) Faculty of Electrical Engineering, Universiti Teknologi Malaysia - Malaysia
(6) Research Organization of Electronics and Informatics, National Research and Innovation Agency - Indonesia
(7) Research Center for Telecommunication, National Research and Innovation Agency - Indonesia
(8) Research Center for Telecommunication, National Research and Innovation Agency - Indonesia
(*) Corresponding Author

Received: September 20, 2022; Revised: October 24, 2022
Accepted: November 01, 2022; Published: December 31, 2022

How to cite (IEEE): N. Chitraningrum, Y. N. Wijayanto, H. Arisesa, I. Sakti, D. Mahmudin, B. Prawara, D. P. Kurniadi,  and P. Daud, "The Optical Characteristics of 20 Watt Far-UVC Light and Its Application for Disinfection Chamber," Jurnal Elektronika dan Telekomunikasi, vol. 22, no. 2, pp. 57-62, Dec. 2022. doi: 10.55981/jet.502


The far-ultraviolet C (UVC) light has been used recently as an alternative disinfection system to deactivate the novel coronaviruses that cause coronavirus disease (COVID-19) without introducing any health damage to humans. We investigate that the far-UVC light from far-UVC excimer lamps (BEST 20 Watt) is a promising candidate for a far-UVC disinfection system to prevent human-to-human transmission of COVID-19. The optical characterization of far-UVC excimer lamps was examined. The maximum irradiance of the far-UVC excimer lamps is 219 nm, which is known to have antimicrobial capabilities on microorganisms, including coronaviruses. We propose a design of a disinfection chamber system based on eight 219 nm far-UVC excimer lamps which are attached vertically about 35 cm to each other, and the irradiation angle was installed at the angle of approximately 120° in order to optimize the irradiation of far-UVC light to a human body. For microorganism inactivation at a distance of around 10 cm from the human body, 219 nm far-UVC excimer lamps requires less than 5 s of irradiation time and the required intensity of 840 mW/cm2 at a low dose of 3000 mJ/cm2. We recommend that our proposed disinfection chamber can be used for humans and applied in public areas to decrease the spread of COVID-19 without any adverse health effect.



COVID-19; disinfection chamber; far-UVC; optical characteristics

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