Impact of green-emitting CaSc2O4:Ce3+ phosphor on the illuminance and color uniformity of white-light-emitting diodes

Novel Eu3+-doped red-emitting phosphor Gd2Mo3O9 for white-light-emitting-diodes (WLEDs) application

Xiaoxia Zhao a,b, Xiaojun Wang a,∗, Baojiu Chen a,c, Qingyu Meng a,b, Weihua Di a,b, Guozhong Ren a,b, Yanmin Yang a,b a Lab of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, PR China b Graduate School of Chinese Academy of Sciences, Beijing 100039, PR China c Department of Physics, Dalian Maritime Univer...

Investigation of Remote-Phosphor White Light-Emitting Diodes with Multi-Phosphor Layers

Highly efficient phosphor-converted white organic light-emitting diodes with moderate microcavity and light-recycling filters.

We demonstrate the combined effects of a microcavity structure and light-recycling filters (LRFs) on the forward electrical efficiency of phosphor-converted white organic light-emitting diodes (pc-WOLEDs). The introduction of a single pair of low- and high-index layers (SiO(2)/TiO(2)) improves the blue emission from blue OLED and the insertion of blue-passing and yellow-reflecting LRFs enhances...

Highly Efficient White Light-emitting Diodes Based on Layered Quantum Dot-Phosphor Nanocomposites as Converting Materials

This paper reports on the enhanced photoluminescence (PL) of nanocomposites through the layered structuring of phosphor and quantum dot (QD). Green phosphor of Sr2SiO4:Eu, red QDs of CdSe/CdS/CdZnS/ZnS core-multishell, and thermo-curable resin were used for this study. Two kinds of composite (layered and mixed) were prepared, and the schemes for optical energy transfer between QD and phosphor w...

Efficiency of True-Green Light Emitting Diodes: Non-Uniformity and Temperature Effects

External quantum efficiency of industrial-grade green InGaN light-emitting diodes (LEDs) has been measured in a wide range of operating currents at various temperatures from 13 K to 300 K. Unlike blue LEDs, the efficiency as a function of current is found to have a multi-peak character, which could not be fitted by a simple ABC-model. This observation correlated with splitting of LED emission s...