High color rendering index white LED based on nano-YAG:Ce3+ phosphor hybrid with CdSe/CdS/ZnS core/shell/shell quantum dots |
| |
| Authors: | Changyu Shen Jinlei Chu Feng Qian Xin Zou Chuan Zhong Ke Li |
| |
| Affiliation: | 1. Institute of Optoelectronic Technology of China JiLiang University , Hangzhou , Zhejiang 310018 , China 47610950@qq.com;3. Institute of Optoelectronic Technology of China JiLiang University , Hangzhou , Zhejiang 310018 , China;4. Hangzhou Institute of Calibration and Testing for Quality and Technical Supervision , Hangzhou , Zhejiang 310018 , China |
| |
| Abstract: | To improve the poor color rendering index (CRI) of YAG:Ce-based white light-emitting diode (LED) due to the lack of red spectral component, core/shell/shell CdSe/CdS/ZnS quantum dots (QDs) were synthesized and blended into nano-YAG:Ce3+ phosphors. Prominent spectral evolution has been achieved by increasing the content of QDs. A white LED combining a blue LED with the blends of nano-YAG phosphors and orange- and red-emission QDs with a weight ratio of 1:1:1 was obtained. This kind of white LED showed excellent white light with luminescent efficiency, color coordinates, CRI and correlated color temperature (CCT) of 82.5?lm/W, (0.3264, 0.3255), 91 and 4580?K, respectively. |
| |
| Keywords: | white LED CdSe/CdS/ZnS quantum dot nano-YAG:Ce3+ phosphor |
|
|
