TY - JOUR
T1 - Data-Driven Discovery of Full-Visible-Spectrum Phosphor
AU - Li, Shuxing
AU - Xia, Yonghui
AU - Amachraa, Mahdi
AU - Hung, Nguyen Tuan
AU - Wang, Zhenbin
AU - Ong, Shyue Ping
AU - Xie, Rong Jun
N1 - Funding Information:
The authors are grateful to the financial supports from the National Natural Science Foundation of China (Nos. 51832005, 51802274, 5157223, and 51561135015), National Key Research and Development Program (MOST, 2017YFB0404301), National Postdoctoral Program for Innovative Talents (No. BX201700138), and China Postdoctoral Science Foundation Grant (No. 2017M622073). The computational work was supported by the National Science Foundation, Ceramics Program, under Grant No. 1411192. The computational resources were provided by the Triton Shared Computing Cluster (TSCC) at the University of California, San Diego, the National Energy Research Scientific Computing Center (NERSC), and the Extreme Science and Engineering Discovery Environment (XSEDE) supported by the National Science Foundation under Grant No. ACI-1053575. Yuwei Yu and Zhuobin Xu from Information and Network Center of Xiamen University are acknowledged for help with high-performance computing. The authors also show sincere thanks to Peng Zheng for the fabrication and measurements of white LEDs.
Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/8/27
Y1 - 2019/8/27
N2 - The development of extra-broadband phosphors is essential for next-generation illumination with better color experience. In this work, we report the discovery of the first-known Eu2+-activated full-visible-spectrum phosphor, Sr2AlSi2O6N:Eu2+, identified by combining data mining of high-throughput density functional theory calculations and experimental characterization. Excited by UV-light-emitting diodes (LEDs), Sr2AlSi2O6N:Eu2+ shows a superbroad emission with a bandwidth of 230 nm, the broadest emission bandwidth ever reported, and has excellent thermal quenching resistance (88% intensity at 150 °C). A prototype white LED utilizing only this full-visible-spectrum phosphor exhibits superior color quality (Ra = 97, R9 = 91), outperforming commercial tricolor phosphor-converted LEDs. These findings not only show great promise of Sr2AlSi2O6N:Eu2+ as a single white emitter but also open up in silico design of full-visible-spectra phosphor in a single-phase material to address the reabsorption energy loss in commercial tricolor phosphor mixture.
AB - The development of extra-broadband phosphors is essential for next-generation illumination with better color experience. In this work, we report the discovery of the first-known Eu2+-activated full-visible-spectrum phosphor, Sr2AlSi2O6N:Eu2+, identified by combining data mining of high-throughput density functional theory calculations and experimental characterization. Excited by UV-light-emitting diodes (LEDs), Sr2AlSi2O6N:Eu2+ shows a superbroad emission with a bandwidth of 230 nm, the broadest emission bandwidth ever reported, and has excellent thermal quenching resistance (88% intensity at 150 °C). A prototype white LED utilizing only this full-visible-spectrum phosphor exhibits superior color quality (Ra = 97, R9 = 91), outperforming commercial tricolor phosphor-converted LEDs. These findings not only show great promise of Sr2AlSi2O6N:Eu2+ as a single white emitter but also open up in silico design of full-visible-spectra phosphor in a single-phase material to address the reabsorption energy loss in commercial tricolor phosphor mixture.
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U2 - 10.1021/acs.chemmater.9b02505
DO - 10.1021/acs.chemmater.9b02505
M3 - Article
AN - SCOPUS:85071642815
SN - 0897-4756
VL - 31
SP - 6286
EP - 6294
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 16
ER -