Increasing the Power: Absorption Bleach, Thermal Quenching, and Auger Quenching of the Red-Emitting Phosphor K2TiF6:Mn4+

被引：11

作者：

de Wit, Jur W. ^{[1
]}

van Swieten, Thomas P. ^{[1
]}

van de Haar, Marie Anne ^{[2
]}

Meijerink, Andries ^{[1
]}

Rabouw, Freddy T. ^{[1
]}

机构：

[1] Univ Utrecht, Debye Inst Nanomat Sci, Princetonplein 1, NL-3584 CC Utrecht, Netherlands

[2] Matrix VII Innovat Ctr, Seaborough Res BV, Sci Pk 106, NL-1098 XG Amsterdam, Netherlands

来源：

ADVANCED OPTICAL MATERIALS | 2023年 / 11卷 / 09期

关键词：

absorption bleach; Auger quenching; droop; red phosphor; thermal quenching; LUMINESCENCE; CAALSIN3-EU2+; K2SIF6MN4+;

D O I：

10.1002/adom.202202974

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mn4+-doped fluorides are popular phosphors for warm-white lighting, converting blue light from light-emitting diodes (LEDs) into red light. However, they suffer from droop, that is, decreasing performance at increasing power, limiting their applicability for high-power applications. Previous studies highlight different causes of droop. Here, a unified picture of droop of Mn4+-doped K2TiF6, accounting for all previously proposed mechanisms, is provided. Combining continuous-wave and pulsed experiments on samples of different Mn4+ content with kinetic Monte Carlo modeling, the contributions of absorption bleach, thermal quenching, and Auger quenching at different excitation densities, are quantified. This work contributes to understanding the fundamental limitations of these materials and may inspire strategies to make Mn4+-doped fluorides more efficient in high-power applications.

引用

页数：7

共 24 条

[1] Temperature dependence (13-600 K) of Mn4+ lifetime in commercial Mg28Ge7.55O32F15.04 and K2SiF6 phosphors [J].

Beers, W. W. ;

Smith, D. ;

Cohen, W. E. ;

Srivastava, A. M. .

OPTICAL MATERIALS, 2018, 84 :614-617

[2] A review on Mn4+ activators in solids for warm white light-emitting diodes [J].

Chen, Daqin ;

Zhou, Yang ;

Zhong, Jiasong .

RSC ADVANCES, 2016, 6 (89) :86285-86296

[3] Concentration Quenching in K2SiF6:Mn4+ Phosphors [J].

Garcia-Santamaria, F. ;

Murphy, J. E. ;

Setlur, A. A. ;

Sista, S. P. .

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, 2018, 7 (01) :R3030-R3033

[4]

Henderson B., 2006, OPTICAL SPECTROSCOPY

[5]

Hoelen C., 2017, PROC SPIE, V10378, P74

[6] Rb3SiF7:Mn4+ and Rb2CsSiF7:Mn4+ Red-Emitting Phosphors with a Faster Decay Rate [J].

Kim, Minseuk ;

Park, Woon Bae ;

Lee, Jin-Woong ;

Lee, Jinhee ;

Kim, Chang Hae ;

Singh, Satendra Pal ;

Sohn, Kee-Sun .

CHEMISTRY OF MATERIALS, 2018, 30 (19) :6936-6944

[7] Enhanced luminous efficiency of deep red emitting K2SiF6:Mn4+ phosphor dependent on KF ratio for warm-white LED [J].

Lee, M. J. ;

Song, Y. H. ;

Song, Y. L. ;

Han, G. S. ;

Jung, H. S. ;

Yoon, D. H. .

MATERIALS LETTERS, 2015, 141 :27-30

[8] Optical properties of Cr3+:NaAl(WO4)2 crystals, a new candidate for broadband laser applications [J].

Nikolov, I ;

Mateos, X ;

Güell, F ;

Massons, J ;

Nikolov, V ;

Peshev, P ;

Díaz, F .

OPTICAL MATERIALS, 2004, 25 (01) :53-58

[9] Properties of transparent Ce:YAG ceramic phosphors for white LED [J].

Nishiura, S. ;

Tanabe, S. ;

Fujioka, K. ;

Fujimoto, Y. .

OPTICAL MATERIALS, 2011, 33 (05) :688-691

[10] New red phosphor ceramic K2SiF6:Mn4+ [J].

Osborne, R. A. ;

Cherepy, N. J. ;

Seeley, Z. M. ;

Payne, S. A. ;

Drobshoff, A. D. ;

Srivastava, A. M. ;

Beers, W. W. ;

Cohen, W. W. ;

Schlagel, D. L. .

OPTICAL MATERIALS, 2020, 107

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