Li, ShuxingShuxingLiXia, YonghuiYonghuiXiaAmachraa, MahdiMahdiAmachraaTUAN HUNG NGUYENWang, ZhenbinZhenbinWangOng, Shyue PingShyue PingOngXie, RongjunRongjunXie2025-09-242025-09-242019https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071642815&doi=10.1021%2Facs.chemmater.9b02505&partnerID=40&md5=9bf31aac9f55da256465bcb935528954https://scholars.lib.ntu.edu.tw/handle/123456789/732320The 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, Sr<inf>2</inf>AlSi<inf>2</inf>O<inf>6</inf>N:Eu2+, identified by combining data mining of high-throughput density functional theory calculations and experimental characterization. Excited by UV-light-emitting diodes (LEDs), Sr<inf>2</inf>AlSi<inf>2</inf>O<inf>6</inf>N: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 (R<inf>a</inf> = 97, R<inf>9</inf> = 91), outperforming commercial tricolor phosphor-converted LEDs. These findings not only show great promise of Sr<inf>2</inf>AlSi<inf>2</inf>O<inf>6</inf>N: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.BandwidthData MiningDensity Functional TheoryEnergy DissipationLight EmissionLight Emitting DiodesColor QualityEmission BandwidthExperimental CharacterizationHigh ThroughputPhosphor-converted LedsSingle-phase MaterialsThermal QuenchingVisible SpectraPhosphors[SDGs]SDG7journal article10.1021/acs.chemmater.9b025052-s2.0-85071642815