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Alcohol-Guided Growth of Two-Dimensional Narrow-Band Red-Emitting K2TiF6:Mn4+ for White-Light-Emitting Diodes
Zhou, Wenli; Wang, Ren-Hong; Yin, Lichang; Chen, Jun; Su, Chaochin; Xing, Xianran; Liu, Ru-Shi
2019-06-05
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume11Issue:22Pages:20143-20149
AbstractThe use of red phosphors with low light-scattering loss could improve the luminous efficacy and color rendering of white-light-emitting diodes (LEDs). Thus, the discovery of such phosphors is highly desired. In this work, high-efficiency two-dimensional red-emitting K2TiF6:Mn4+ (KTFM) were synthesized via an alcohol-assisted coprecipitation route. The synergistic effects of 1-propanol and hydrofluoric acid on the growth of KTFM microsheets (MSs) were studied through the first-principles calculations, which revealed that 1-propanol promoted the growth of KTFM MSs by preferentially adsorbing on the H-terminated K2TiF6 (001) surface. The photoluminescence quantum efficiency (QE) of Mn4+ -activated K2TiF6 MSs was highly related to their size and thickness. The morphology-optimal KTFM MSs presented high internal QE (>90%), external QE (>71%), and thermal quenching temperature (102% at 150 degrees C relative to that at 25 degrees C). A prototype phosphor-converted LED with KTFM as the red-emitting component showed excellent color rendition (R-a = 91, R9 = 79) and high luminous efficacy (LE = 156 lm/w).
Keywordnarrow band red emission K2TiF6:Mn4+ two-dimensional material backlight light-emitting diode
Indexed BySCI
Language英语
WOS IDWOS:000470938500052
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81012
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Zhou, Wenli,Wang, Ren-Hong,Yin, Lichang,et al. Alcohol-Guided Growth of Two-Dimensional Narrow-Band Red-Emitting K2TiF6:Mn4+ for White-Light-Emitting Diodes[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(22):20143-20149.
APA Zhou, Wenli.,Wang, Ren-Hong.,Yin, Lichang.,Chen, Jun.,Su, Chaochin.,...&Liu, Ru-Shi.(2019).Alcohol-Guided Growth of Two-Dimensional Narrow-Band Red-Emitting K2TiF6:Mn4+ for White-Light-Emitting Diodes.ACS APPLIED MATERIALS & INTERFACES,11(22),20143-20149.
MLA Zhou, Wenli,et al."Alcohol-Guided Growth of Two-Dimensional Narrow-Band Red-Emitting K2TiF6:Mn4+ for White-Light-Emitting Diodes".ACS APPLIED MATERIALS & INTERFACES 11.22(2019):20143-20149.
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