Effect of quantum dot scattering and absorption on the optical performance of white light-emitting diodes

JS Li, Y Tang, ZT Li, XR Ding, LS Rao… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Quantum dots (QDs) show a great potential for light-emitting diodes (LEDs) packaging,
which still face great challenges compared with the matured phosphor downconversion …

Rapid synthesis of highly photoluminescent nitrogen-doped carbon quantum dots via a microreactor with foamy copper for the detection of Hg2+ ions

Y Tang, L Rao, Z Li, H Lu, C Yan, S Yu, X Ding… - Sensors and Actuators B …, 2018 - Elsevier
A rapid synthetic method for highly photoluminescent (PL) nitrogen-doped carbon quantum
dots (N-CQDs) was developed by using a microreactor with foamy copper having different …

Improving the optical performance of multi-chip LEDs by using patterned phosphor configurations

X Ding, Q Chen, Y Tang, J Li, D Talwar, B Yu, Z Li - Optics Express, 2018 - opg.optica.org
In order to improve the color uniformity of multi-chip LEDs, a patterned phosphor
configuration has been proposed by using pulsing spray process. The patterned phosphor …

Highly reflective nanofiber films based on electrospinning and their application on color uniformity and luminous efficacy improvement of white light-emitting diodes

Y Tang, G Liang, J Chen, S Yu, Z Li, L Rao, B Yu - Optics express, 2017 - opg.optica.org
Based on electrospinning technology, in this study, we fabricated poly (lactic-co-glycolic
acid)(PLGA) nanofiber films with high reflectivity and scattering properties. Various films with …

Investigation of the emission spectral properties of carbon dots in packaged LEDs using TiO2 nanoparticles

JS Li, Y Tang, ZT Li, Z Li, XR Ding… - IEEE Journal of Selected …, 2017 - ieeexplore.ieee.org
We examined light-emitting diodes (LEDs) packaged with silicone encapsulation of carbon
dots (CDs) that is doped using TiO 2 nanoparticles (TiO 2 NPs). The results reveal that the …

Full spectral optical modeling of quantum-dot-converted elements for light-emitting diodes considering reabsorption and reemission effect

JS Li, Y Tang, ZT Li, K Cao, CM Yan, XR Ding - Nanotechnology, 2018 - iopscience.iop.org
Quantum dots (QDs) have attracted significant attention in light-emitting diode (LED)
illumination and display applications, owing to their high quantum yield and unique spectral …

Study on scattering and absorption properties of quantum-dot-converted elements for light-emitting diodes using finite-difference time-domain method

J Li, Y Tang, Z Li, X Ding, D Yuan, B Yu - Materials, 2017 - mdpi.com
CdSe/ZnS quantum-dot-converted elements (QDCEs) are good candidates for substituting
rare-earth phosphor-converted elements (PCEs) in white light-emitting diodes (LEDs); …

Nanocrystal-filled polymer for improving angular color uniformity of phosphor-converted white LEDs

Q Xu, L Meng, X Wang - Applied Optics, 2019 - opg.optica.org
Improvement in angular color uniformity is of significant importance to reach high
illumination quality for a white LED. In this demonstration, we show potential applications of …

Optical design of dental light using a remote phosphor light-emitting diode package for improving illumination uniformity

SW Jeon, S Kim, J Choi, I Jang, Y Song, WH Kim… - Applied Optics, 2018 - opg.optica.org
The projection-type dental lighting based on the remote phosphor light-emitting diode (LED)
package is designed to enhance uniformity of illuminance and correlated color temperature …

Effect of flip-chip height on the optical performance of conformal white-light-emitting diodes

Z Li, Y Tang, J Li, X Ding, C Yan, B Yu - Optics Letters, 2018 - opg.optica.org
To improve the optical performance of the conformal white light-emitting diodes (LEDs),
previous studies mainly focus on the phosphor structures design by simulations and …