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Volume 8
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Article

Effect of Quantum Dot-Based Remote Lenses on the Emission Properties of White LED Lighting Studied by Optical Simulation and Experiment

by
Sung Min Park
1,
Eunki Baek
1,
Sohee Kim
1,
Jaehyeong Yoo
1,
Sung-Yoon Joe
1,
Jae-Hyeon Ko
1,*,
Taehee Park
2 and
Young Wook Ko
2
1
School of Nano Convergence Technology, Nano Convergence Technology Center, Hallym University, Gangwon-do, Chuncheon-si 24252, Republic of Korea
2
GLVISION Co., Ltd., Room 1034, 9-36 Supuran-gil, Siheung-si 14986, Republic of Korea
*
Author to whom correspondence should be addressed.
Ceramics 2025, 8(2), 39; https://doi.org/10.3390/ceramics8020039
Submission received: 4 March 2025 / Revised: 10 April 2025 / Accepted: 16 April 2025 / Published: 19 April 2025
(This article belongs to the Special Issue Advances in Ceramics, 3rd Edition)
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Abstract

The introduction of side-emitting lenses into white light-emitting diodes (LEDs) has enabled thin panel lighting technology based on LED technology, but also presents the disadvantage of low color rendering due to insufficient red components in the spectra of typical white LEDs. Additional application of remote quantum dot (QD) components such as QD films or caps presents the issues of increased numbers of components and higher costs. In this study, we incorporated red QDs directly into a lens placed on white LEDs and analyzed the effects of QD lenses on the optical characteristics of a lighting device through experiments and simulations. By incorporating red CdSe/ZnS QDs into UV-curable resin to fabricate QD lenses and applying them to white LEDs, we significantly improved the color rendering index and were able to adjust the correlated color temperature over a wide range between 2700 and 9900 K. However, as the concentration of QDs in the lens increased, scattering by the QD particles was enhanced, strengthening the Lambertian distribution in the intensity plot. Following the development of optical models for QD lenses under experimental conditions, comprehensive optical simulations of white LED lighting systems revealed that increasing the device height proved more effective than modifying TiO2 scattering particle concentration in the diffuser plate for mitigating QD-induced bright spots and enhancing illumination uniformity.
Keywords: Quantum dot; LED; QD lens; color rendering; uniformity; optical simulation Quantum dot; LED; QD lens; color rendering; uniformity; optical simulation

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MDPI and ACS Style

Park, S.M.; Baek, E.; Kim, S.; Yoo, J.; Joe, S.-Y.; Ko, J.-H.; Park, T.; Ko, Y.W. Effect of Quantum Dot-Based Remote Lenses on the Emission Properties of White LED Lighting Studied by Optical Simulation and Experiment. Ceramics 2025, 8, 39. https://doi.org/10.3390/ceramics8020039

AMA Style

Park SM, Baek E, Kim S, Yoo J, Joe S-Y, Ko J-H, Park T, Ko YW. Effect of Quantum Dot-Based Remote Lenses on the Emission Properties of White LED Lighting Studied by Optical Simulation and Experiment. Ceramics. 2025; 8(2):39. https://doi.org/10.3390/ceramics8020039

Chicago/Turabian Style

Park, Sung Min, Eunki Baek, Sohee Kim, Jaehyeong Yoo, Sung-Yoon Joe, Jae-Hyeon Ko, Taehee Park, and Young Wook Ko. 2025. "Effect of Quantum Dot-Based Remote Lenses on the Emission Properties of White LED Lighting Studied by Optical Simulation and Experiment" Ceramics 8, no. 2: 39. https://doi.org/10.3390/ceramics8020039

APA Style

Park, S. M., Baek, E., Kim, S., Yoo, J., Joe, S.-Y., Ko, J.-H., Park, T., & Ko, Y. W. (2025). Effect of Quantum Dot-Based Remote Lenses on the Emission Properties of White LED Lighting Studied by Optical Simulation and Experiment. Ceramics, 8(2), 39. https://doi.org/10.3390/ceramics8020039

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