High Concentration of Barium Sulfate for Scattering Strength Improvement to Achieve Better Color Uniformity of a WLED
Article Sidebar
-
Barium Sulfate, YAG:Ce3 , LEDs, Lumen Output, Color Uniformity
Abstract
This simulation study provides a comprehensive investigation into the influence of varying concentrations of barium sulfate (BaSO4) on the optical characteristics of white light-emitting diodes (WLEDs). The research is conducted through MATLAB-based simulations that employ Mie-scattering theory to accurately model light–particle interactions. BaSO4 is chosen as a scattering medium due to its well-documented advantages, including chemical stability, non-toxicity, cost-effectiveness, and exceptionally high reflectivity across the visible spectrum. These properties make it a promising candidate for improving both the efficiency and the optical quality of WLEDs. In this study, BaSO4 particles are introduced into the WLED structure with the goal of enhancing two key performance metrics: color uniformity and luminous output. Through systematic modeling, scattering efficiencies are calculated at a range of BaSO4 concentrations to evaluate how particle density influences light propagation and distribution within the device. The results demonstrate a clear correlation between increasing BaSO4 concentration and improved scattering efficiency, leading to higher lumen output. However, the findings also indicate that performance gains reach an optimum at specific concentration levels, beyond which excessive scattering may reduce efficiency by causing unwanted light losses. Beyond luminous efficiency, the integration of BaSO4 also contributes positively to the color rendering capability of the WLED, minimizing color deviation and producing a more uniform and natural white emission. This highlights BaSO4’s dual role in enhancing both brightness and optical quality. Collectively, the outcomes of this simulation study emphasize the potential of BaSO4 as a functional scattering additive that can significantly improve WLED design. The insights gained offer valuable guidance for the development of next-generation solid-state lighting devices with superior optical performance, energy efficiency, and color stability.
References
Babilon, S., J. Klabes, P. Myland, and T. Q. Khanh (2021). Memory Colors and the Assessment of Color Quality in Lighting Applications. Optics Express, 29(18); 28968
Bugoffa, S. G. and M. R. Chatterjee (2021). Electromagnetic and Imaging Properties of Chiral Dispersive Spherical Interfaces Under Bimodal Propagation Using ABCD Matrices. Applied Optics, 60(25); 7804
Buzzelli, M. and I. Erba (2021). On the Evaluation of Temporal and Spatial Stability of Color Constancy Algorithms. Journal of the Optical Society of America A, 38(9); 1349
Chen, Z., J. Su, X. Zeng, X. Huang, Y. Li, and C. Huang (2021). Electron Angular Correlation in Nonsequential Double Ionization of Molecules by Counter-Rotating Two-Color Circularly Polarized Fields. Optics Express, 29(18); 29576
Cong, P. H. and N. D. Q. Anh (2025). Augmenting Chroma Performance for WLED Employing Sr8ZnSc(PO4)7:Eu2+@SiO2 As a Scattering-Enhancing Substance. Science and Technology Indonesia, 10(2); 467–472
Gao, S., Z.-N. Tian, P. Yu, H.-Y. Sun, H. Fan, Q.-D. Chen, and H.-B. Sun (2021). Deep Diamond Single-Photon Sources Prepared by a Femtosecond Laser. Optics Letters, 46(17); 4386
Gu, D., C. Liang, L. Sun, H. Chen, Y. Chen, and L. Yang (2021). Optical Metasurfaces for Waveguide Couplers with Uniform Efficiencies at RGB Wavelengths. Optics Express, 29(18); 29149
Kurniawidi, D. W., S. Rahayu, A. Budianto, K. Saputra, W. P. Agista, T. Suprayogi, and R. Marlina (2025). Synthesis and Characterization of TiO2/CaTiO3 Perovskite Composite Derived from Pinctada maxima Shell Waste. Science and Technology Indonesia, 10(3); 924–942
Li, X., S. Fu, J. Miao, M. Zhang, and X. Zhang (2021). Adjustable Color Response During Plasmon Resonance by Monochromatic Light Irradiation. Optics Letters, 46(17); 4296
Loan, N. T. P., L. X. Thuy, N. L. Thai, H. Y. Lee, and P. H. Cong (2024). Application of KBaYSi2O7:Bi3+,Eu3+ Phosphor for White Light-Emitting Diodes with Excellent Color Quality. Science and Technology Indonesia, 9(3); 756–765
Masaoka, K. (2021). Proper Application of Chromaticity Gamut Area Metrics for Displays. Optics Express, 29(18); 29107
Navarro, R., S. Baquedano, and A. I. Sánchez-Cano (2021). GRINCULens with Conicoid Iso-Indicial Surfaces: Application for Modeling the Crystalline Lens. Optics Express, 29(20); 30998
Pi, D., J. Liu, and S. Yu (2021). Speckleless Color Dynamic Three-Dimensional Holographic Display Based on Complex Amplitude Modulation. Applied Optics, 60(25); 7844
Preciado, O. U., A. Martin, E. Manzano, K. a. G. Smet, and P. Hanselaer (2021). CAM18sl Brightness Prediction for Unrelated Saturated Stimuli Including Age Effects. Optics Express, 29(18); 29257
Rahman, M. A., Y. H. Kim, S.-H. Cho, S. Y. Lee, and J. Y. Byun (2021). Realization of Structural Colors via Capped Cu-Based F–P Cavity Structure. Optics Express, 29(18); 29466
Septriansyah, V., S. Saloma, S. A. Nurjannah, A. Saggaff, A. P. Usman, and S. P. Ngian (2025). Effect of the Nano-Silica Addition on the Mechanical Properties of Polymer Concrete. Science and Technology Indonesia, 10(1); 9–17
Setiawati, M., A. Saggaff, S. Saloma, and S. P. Ngian (2025). Effect of Solution Concentration, Fly Ash Ratio, and Aging Time on the Quality of Nano-Silica. Science and Technology Indonesia, 10(2); 622–627
Suchkov, N., T. Kurian, C. Schwarz, A. Leube, and S. Wahl (2021). SLM-Based Interferometer for Assessing the Polychromatic Neural Transfer Function of the Eye. Biomedical Optics Express, 12(10); 6040
Sun, Y., J. Zhang, and R. Liang (2021). Color Polarization Demosaicking by a Convolutional Neural Network. Optics Letters, 46(17); 4338
Tan, X., J. Wang, X. Wei, C. Pan, Y. Ren, S. Sun, and H. Jia (2021). First-Principle Study on the Influence of Common Impurities in Diamond on the Electronic Structure of Ce Related Defects. Optical Materials Express, 11(10); 3421
Tung, H. T., N. D. Q. Anh, and H. Y. Lee (2024a). Impact of Phosphor Granule Magnitudes As Well As Mass Proportions on the Luminous Hue Efficiency of a Coated White Light-Emitting Diode and One Green Phosphor Film. Optoelectronics and Advanced Materials- Rapid Communications, 18(1); 58–65
Tung, H. T., N. T. P. Loan, and N. D. Q. Anh (2024b). The Enhancement Chromatic Uniformity and Illuminating Flux of WLEDs with Dual-Layer Phosphorus Configuration. In Lecture Notes in Electrical Engineering. pages 167–174
Tung, H. T., B. T. Minh, N. L. Thai, H. Y. Lee, and N. D. Q. Anh (2024c). ZnO Particles As Scattering Centers to Optimize Color Production and Lumen Efficiencies of Warm White LEDs. Optoelectronics and Advanced Materials- Rapid Communications, 18(5); 1–6
Tung, H. T., M. H. N. Thi, and N. D. Q. Anh (2024d). Improved Color Uniformity in White Light-Emitting Diodes Using LiLu(MoO4)2:Sm3+ Combined SiO2 Composite. International Journal of Technology, 15(1); 8
Wang, Z., S. Zhu, X. Shan, Z. Yuan, X. Cui, and P. Tian (2021). Full-Color Micro-LED Display Based on a Single Chip with Two Types of InGaN/GaN MQWs. Optics Letters, 46(17); 4358
Yamashita, K., K. Kunitsu, T. Hattori, Y. Kuwahara, and A. Saito (2021). Demonstration of a Diffraction-Based Optical Diffuser Inspired by the Morpho Butterfly. Optics Express, 29(19); 30927
Yu, B., Z. Lu, G. Liang, Y. Yuan, H. Wang, J. He, and S. Yang (2021). Luminous Efficacy Enhancement for LED Lamps Using Highly Reflective Quantum Dot-Based Photoluminescent Films. Optics Express, 29(18); 29007
Zhou, J., T. Yang, W. Ren, D. Zhang, and W. Zhang (2021). Underwater Image Restoration via Depth Map and Illumination Estimation Based on a Single Image. Optics Express, 29(19); 29864
Zhuang, Z., D. Iida, M. Velazquez-Rizo, and K. Ohkawa (2021). 630-nm Red InGaN Micro-Light-Emitting Diodes (< 20 μm×20 μm) Exceeding 1 mW/mm² for Full-Color Micro-Displays. Photonics Research, 9(9); 1796
Authors
This work is licensed under a Creative Commons Attribution 4.0 International License.