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Related Experiment Video

Updated: Nov 13, 2025

Low-energy Cathodoluminescence for OxyNitride Phosphors

Low-energy Cathodoluminescence for OxyNitride Phosphors

Published on: November 15, 2016

Garnet phosphors for white-light-emitting diodes: modification and calculation.

Tongyu Gao¹, Junhang Tian, Yuanhong Liu

¹National Engineering Research Center for Rare Earth Materials, GRINM Group Co., Ltd., Beijing 100088, China.

Dalton Transactions (Cambridge, England : 2003)

|March 12, 2021

Summary

Researchers modified garnet phosphors for efficient white-light-emitting diodes (pc-wLEDs). Modifications to YAG:Ce3+ phosphors and first-principles calculations enhance their structure and luminescence for improved lighting applications.

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Last Updated: Nov 13, 2025

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Area of Science:

Materials Science
Solid State Chemistry
Optoelectronics

Background:

Phosphor-converted white-light-emitting diodes (pc-wLEDs) are crucial for efficient lighting and displays.
Yttrium aluminum garnet doped with cerium (YAG:Ce3+) is a mature technology for white light generation.

Purpose of the Study:

To explore modifications of garnet phosphors for enhanced performance.
To utilize first-principles calculations for predicting phosphor properties.

Main Methods:

Systematic modification of YAG:Ce3+ phosphors at five crystallographic sites.
First-principles calculations to analyze and predict structure and luminescence.

Main Results:

Detailed illustration of how structural modifications affect luminescence properties.
Analysis and prediction of structure-property relationships in novel garnet phosphors.

Conclusions:

Garnet phosphors offer structural flexibility for tailored optoelectronic properties.
Calculations and modifications advance the development of high-performance pc-wLEDs.