@article{Li2026, 
author = {Junpeng Li and Zhouyan Li and Jintao Xie and Yujia Xu and Yuting Li and Mincheng Jiang and Asif Ali Haider and Wei Qian and Jing Zhu and Bo Wang and Xiaoshuang Li and Youchao Kong and Jun Zhang},
title = {Structural evolution-facilitated luminescence of Sm3+ in whitlockite-type phosphors with anti-thermal quenching behavior},
year = {2026},
journal = {Journal of Advanced Ceramics},
volume = {15},
number = {1},
pages = {9221216},
keywords = {structural evolution, Sm3+, whitlockite structure, luminescence efficiency, anti-thermal quenching (ATQ)},
url = {https://www.sciopen.com/article/10.26599/JAC.2025.9221216},
doi = {10.26599/JAC.2025.9221216},
abstract = {Sm3+ luminescence has pivotal significance in the field of optoelectronics. However, their poor luminescence efficiency severely hinders their practical application as Sm3+-activated optical materials. Herein, two whitlockite-type phosphors, Sr9Ln(PO4)7:Sm3+ (Ln = La and Y, marked as SLPO and SYPO), with anti-thermal quenching (ATQ) were reported. The substitution of La3+ with Y3+ results in structural evolution from the space group R 3¯m of SLPO:Sm3+ to I2/a of SYPO:Sm3+, increasing the distance between Sm3+ dopants and suppressing nonradiative (NR) relaxation. The luminescence efficiency is significantly enhanced by 2.3 times. The representative SYPO:0.05Sm3+ phosphor demonstrates superior temperature sensing performance, achieving a relative sensitivity of 1.78%·K−1, which exceeds the values reported for recently investigated Sm3+-activated phosphors. Moreover, the material is packaged in a 395 nm chip-excited white lighting source, resulting in a low correlated color temperature (CCT = 3394 K) with a high color rendering index (Ra = 97). This study provides a facile structural evolution strategy for designing highly efficient Sm3+-activated optical materials that facilitate wider applications.}
}