Single-Crystalline ZnO/Graphene Quantum Dots Phosphors-Converted White Light-Emitting Diodes

被引：9

作者：

Kumar, Mirgender ^{[1
]}

Kumar, Anuj ^{[2
]}

Sunny ^{[3
]}

Seong, Kwang-Su ^{[1
]}

Park, Si-Hyun ^{[1
]}

机构：

[1] Yeungnam Univ, Dept Elect Engn, Gyongsan 38541, South Korea

[2] Yeungnam Univ, Sch Chem Engn, Gyongsan 38541, South Korea

[3] Indian Inst Informat Technol, Dept Elect & Commun Engn, Allahabad 211015, Uttar Pradesh, India

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2019年 / 31卷 / 03期

关键词：

Phosphor-converted white LEDs; ZnO film; graphene quantum dots; cool white light; EMISSION; LEDS; UV;

D O I：

10.1109/LPT.2018.2880518

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this letter, phosphor-converted white light-emitting diodes (LEDs) were analyzed based on the single-crystalline (SC) ZnO film/graphene quantum dots (GQDs) as phosphors with ultraviolet (UV) excitation. Color rendering index (CRI) and correlated color temperature (CCT) are found to be improved with injection current. The luminous efficiency of 245 lm/W at 260 mA has been achieved with 98 CRI and 5064 K CCT. The results show that the UV excited SC ZnO coated with GQDs white LEDs are more optically compatible for solid-state lighting, compared to the conventional blue chip-excited yellow phosphors LEDs.

引用

页码：203 / 205

页数：3

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