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Regulating the white LED properties with different SiO2 particle sizes

P. X. LE1, N. D. Q. ANH2,* , H. Y. LEE3

Affiliation

  1. Faculty of Electrical Engineering Technology, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Vietnam
  2. Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam
  3. Department of Electrical Engineering, National Kaohsiung University of Sciences and Technology, Kaohsiung, Taiwan

Abstract

The scattering factor plays a pivotal role in enhancing the optical performance of white light-emitting diodes (LEDs). This paper presents a simulation study in which SiO2 nanoparticles are employed to harness their scattering enhancement effects in blue-pumped white LEDs. The scattering functions of the particles are simulated and computed using the Mie scattering theory. Throughout the study, the concentrations of SiO2 and phosphor-film thickness are kept constant, while the size of SiO2 particles is systematically varied to investigate its impact on the lighting performance of the white LED. We comprehensively assess and discuss the lumen output and chromatic performance of the LED under different SiO2 particle size scenarios. Our findings reveal that by increasing the SiO2 particle size, significant improvements can be achieved in specific properties of the white LED, providing valuable insights for optimizing LED design and performance.

Keywords

White LED, Scattering properties, Color rendering index, Luminous efficacy.

Citation

P. X. LE, N. D. Q. ANH, H. Y. LEE, Regulating the white LED properties with different SiO2 particle sizes, Optoelectronics and Advanced Materials - Rapid Communications, 18, 9-10, September-October 2024, pp.485-489 (2024).

Submitted at: Jan. 13, 2024

Accepted at: Oct. 2, 2024