Phosphor geometry regulations with separated red and green quantum dot layers for high performance warm white light-emitting diodes
详细信息 查看全文
- 作者：Dong Caia ; Xi Yuanb ; Dehua Zhua ; zhu_556@163.com" class="auth_mail" title="E-mail the corresponding author ; Hongming Zhoua ; Haibo Lib ; Jialong Zhaob ; zhaojl@ciomp.ac.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Quantum dot ; White light emitting diode ; Phosphor geometry ; Energy transfer
- 刊名：Materials Research Bulletin
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：85
- 期：Complete
- 页码：222-227
- 全文大小：1733 K
文摘
- •
The role of red quantum dots was studied to fabricate high luminous efficiency warm white LEDs.
- •
Energy transfer and reabsorption between red and green quantum dots in LED structures were discussed.
- •
The layered white LED showed an increase of nearly 11% in efficiency, compared to one with mixed layers.
- •
The optimized white LED yielded a luminous efficiency of 90 lm/W and a color rendering index of 80.