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Potassium Bromide scattering simulation for improving phosphor-converting white LED performance

NGUYEN DOAN QUOC ANH1, NGUYEN THI PHUONG LOAN2,* , PHAM VAN DE3, HSIAO-YI LEE4

Affiliation

  1. Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam
  2. Faculty of Fundamental 2, Posts and Telecommunications Institute of Technology, Ho Chi Minh City, Vietnam
  3. Faculty of Engineering, Dong Nai Technology University, Dong Nai Province, Vietnam
  4. Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung city, Taiwan

Abstract

Potassium Bromide (KBr) is recognized for its performance in improving luminescence intensity and stability of perovskite nanocrystals for white light emitting diodes (W-LEDs). This work establishes a simulation of KBr’s scattering influence of chromaticity and luminosity of the general W-LED model. The concentration of KBr varies to monitor the optical influences. The Mie-scattering and MATLAB computation are the primary simulation means. Results demonstrate the efficacy of increasing KBr amount in reducing the spatial chromatic deviation while minimizing the reduction in luminescence intensity of the W-LED. Thus, KBr owns a great potential to be a promising additive for phosphor compound for the fabrication of high-power and high-quality W-LED devices.

Keywords

White LED, Lambert-Beer law, Color rendering index, Luminous efficacy.

Citation

NGUYEN DOAN QUOC ANH, NGUYEN THI PHUONG LOAN, PHAM VAN DE, HSIAO-YI LEE, Potassium Bromide scattering simulation for improving phosphor-converting white LED performance, Optoelectronics and Advanced Materials - Rapid Communications, 19, 7-8, July-August 2025, pp.378-383 (2025).

Submitted at: Dec. 23, 2024

Accepted at: Aug. 4, 2025