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Updated: Feb 15, 2026

Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
The Enhanced Red Emission and Improved Thermal Stability of CaAlSiN₃:Eu2+ Phosphors by Using Nano-EuB₆ as Raw
Wen-Quan Liu1, Dan Wu2, Hugejile Chang3
1Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, College of Physics and Electronic Information, Inner Mongolia Normal University, Hohhot 010022, China. seazuri@163.com.
Abstract:
Synthesizing phosphors with high performance is still a necessary work for phosphor-converted white light-emitting diodes (W-LEDs). In this paper, three series of CaAlSiN₃:Eu2+ (denoted as CASN:Eu2+) phosphors using Eu₂O₃, EuN and EuB₆ as raw materials respectively are fabricated by under the alloy precursor normal pressure nitridation synthesis condition. We demonstrate that CASN:Eu2+ using nano-EuB₆ as raw material shows higher emission intensity than others, which is ascribed to the increment of Eu2+ ionic content entering into the crystal lattice. An improved thermal stability can also be obtained by using nano-EuB₆ due to the structurally stable status, which is assigned to the partial substitution of Eu-O (Eu-N) bonds by more covalent Eu-B ones that leads to a higher structural rigidity. In addition, the W-LEDs lamp was fabricated to explore its possible application in W-LEDs based on blue LEDs. Our results indicate that using EuB₆ as raw materials can provide an effective way of enhancing the red emission and improving the thermal stability of the CASN:Eu2+ red phosphor.
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