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Open AccessArticle

Efficient and Stable CdSe/CdS/ZnS Quantum Rods-in-Matrix Assembly for White LED Application

Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, China
SHINEON Co., LTD., Building 3, No. 58 Jinghai Road, BDA, Beijing 100176, China
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(2), 317;
Received: 22 January 2020 / Revised: 5 February 2020 / Accepted: 7 February 2020 / Published: 12 February 2020
(This article belongs to the Section Synthesis, Interfaces and Nanostructures)
CdSe/CdS core-shell quantum rods (QRs) are a promising prospect in optoelectronic applications but usually have a relatively low quantum efficiency and stability. Here, we report on an efficient and stable CdSe/CdS/ZnS QRs-in-matrix assembly (QRAs) by growing and embedding CdSe/CdS QRs in ZnS matrices. Structural characterizations show that the CdSe/CdS QRs are encapsulated and interconnected by ZnS in the QRAs structure. The stable ZnS encapsulation renders the CdSe/CdS QRs high quantum efficiency (QE) up to 85%. The QRAs also present high photo- and thermal-stability and can preserve 93% of the initial QE at 100 °C. The QRAs powder presents a light degradation of only 2% under continuous excitation for 100 h, displaying profound potential in optoelectronic applications. White light-emitting diodes (WLEDs) are fabricated by packaging the QRAs powder as phosphor on top of blue GaN chip. The WLED shows high optical performance and light quality. View Full-Text
Keywords: quantum rod; core-shell; assembly; light-emitting diodes; stability quantum rod; core-shell; assembly; light-emitting diodes; stability
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MDPI and ACS Style

Chen, Y.; Xing, W.; Liu, Y.; Zhang, X.; Xie, Y.; Shen, C.; Liu, J.G.; Geng, C.; Xu, S. Efficient and Stable CdSe/CdS/ZnS Quantum Rods-in-Matrix Assembly for White LED Application. Nanomaterials 2020, 10, 317.

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