High-performance and moisture-resistant red-emitting Cs                         2                         SiF                         6                         :Mn                         4+                          for high-brightness LED backlighting

Yong Liu; Zhi Zhou; Lin Huang; Mikhail G. Brik; Shuaichen Si; Litian Lin; Tongtong Xuan; Hongbin Liang; Jianbei Qiu; Jing Wang

doi:10.1039/c8tc06083e

High-performance and moisture-resistant red-emitting Cs ₂ SiF ₆ :Mn ⁴⁺ for high-brightness LED backlighting

Yong Liu
, Zhi Zhou
, Lin Huang
, Mikhail G. Brik
, Shuaichen Si
, Litian Lin
, Tongtong Xuan
, Hongbin Liang
, Jianbei Qiu
, Jing Wang^*

^*Corresponding author for this work

Sun Yat-Sen University
Hunan Agricultural University
Chongqing University of Posts and Telecommunications
University of Tartu
Jan Dlugosz University in Czestochowa
Kunming University of Science and Technology
Key Laboratory of Advanced Materials of Yunnan Province

Research output: Contribution to journal › Article › peer-review

85 Citations (Scopus)

Abstract

Narrow-band red-emitting fluoride phosphors for wide color gamut LED backlights have evoked considerable attention, due to their fascinating optical properties. Unfortunately, poor moisture resistance often restricts their further applications in optoelectronics. Herein we developed a Cs ₂ SiF ₆ :Mn ⁴⁺ red phosphor using a lowerature co-precipitation method and passivating it by using H ₂ O ₂ . The phosphor shows a very high external quantum efficiency (EQE) of ∼85% and exhibits excellent moisture stability retaining 74% of its emission intensity after being exposed to high temperature (85 °C) and high humidity (85%) (HTHH) for 168 h. Finally, the high brightness white LED devices combined with the passivated Cs ₂ SiF ₆ :Mn ⁴⁺ exhibit high luminous efficacy of 133 lm W ^-1 and wide color gamut (∼84.7% NTSC). The results demonstrate that the passivated Cs ₂ SiF ₆ :Mn ⁴⁺ with high EQE and excellent moisture-resistance is promising as a narrow-band red emitting phosphor for wide color gamut LED backlights.

Original language	English
Pages (from-to)	2401-2407
Number of pages	7
Journal	Journal of Materials Chemistry C
Volume	7
Issue number	8
DOIs	https://doi.org/10.1039/c8tc06083e
Publication status	Published - 2019
Externally published	Yes

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10.1039/c8tc06083e

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Liu, Y., Zhou, Z., Huang, L., Brik, M. G., Si, S., Lin, L., Xuan, T., Liang, H., Qiu, J., & Wang, J. (2019). High-performance and moisture-resistant red-emitting Cs ₂ SiF ₆ :Mn ⁴⁺ for high-brightness LED backlighting Journal of Materials Chemistry C, 7(8), 2401-2407. https://doi.org/10.1039/c8tc06083e

Liu, Yong ; Zhou, Zhi ; Huang, Lin et al. / High-performance and moisture-resistant red-emitting Cs ₂ SiF ₆ :Mn ⁴⁺ for high-brightness LED backlighting In: Journal of Materials Chemistry C. 2019 ; Vol. 7, No. 8. pp. 2401-2407.

@article{63706844515646eebf22c2aa97b71807,

title = " High-performance and moisture-resistant red-emitting Cs 2 SiF 6 :Mn 4+ for high-brightness LED backlighting ",

abstract = " Narrow-band red-emitting fluoride phosphors for wide color gamut LED backlights have evoked considerable attention, due to their fascinating optical properties. Unfortunately, poor moisture resistance often restricts their further applications in optoelectronics. Herein we developed a Cs 2 SiF 6 :Mn 4+ red phosphor using a lowerature co-precipitation method and passivating it by using H 2 O 2 . The phosphor shows a very high external quantum efficiency (EQE) of ∼85\% and exhibits excellent moisture stability retaining 74\% of its emission intensity after being exposed to high temperature (85 °C) and high humidity (85\%) (HTHH) for 168 h. Finally, the high brightness white LED devices combined with the passivated Cs 2 SiF 6 :Mn 4+ exhibit high luminous efficacy of 133 lm W -1 and wide color gamut (∼84.7\% NTSC). The results demonstrate that the passivated Cs 2 SiF 6 :Mn 4+ with high EQE and excellent moisture-resistance is promising as a narrow-band red emitting phosphor for wide color gamut LED backlights.",

author = "Yong Liu and Zhi Zhou and Lin Huang and Brik, \{Mikhail G.\} and Shuaichen Si and Litian Lin and Tongtong Xuan and Hongbin Liang and Jianbei Qiu and Jing Wang",

note = "Publisher Copyright: {\textcopyright} 2019 The Royal Society of Chemistry.",

year = "2019",

doi = "10.1039/c8tc06083e",

language = "English",

volume = "7",

pages = "2401--2407",

journal = "Journal of Materials Chemistry C",

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}

Liu, Y, Zhou, Z, Huang, L, Brik, MG, Si, S, Lin, L, Xuan, T, Liang, H, Qiu, J & Wang, J 2019, ' High-performance and moisture-resistant red-emitting Cs ₂ SiF ₆ :Mn ⁴⁺ for high-brightness LED backlighting ', Journal of Materials Chemistry C, vol. 7, no. 8, pp. 2401-2407. https://doi.org/10.1039/c8tc06083e

High-performance and moisture-resistant red-emitting Cs ₂ SiF ₆ :Mn ⁴⁺ for high-brightness LED backlighting . / Liu, Yong; Zhou, Zhi; Huang, Lin et al.
In: Journal of Materials Chemistry C, Vol. 7, No. 8, 2019, p. 2401-2407.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - High-performance and moisture-resistant red-emitting Cs 2 SiF 6 :Mn 4+ for high-brightness LED backlighting

AU - Liu, Yong

AU - Zhou, Zhi

AU - Huang, Lin

AU - Brik, Mikhail G.

AU - Si, Shuaichen

AU - Lin, Litian

AU - Xuan, Tongtong

AU - Liang, Hongbin

AU - Qiu, Jianbei

AU - Wang, Jing

PY - 2019

Y1 - 2019

N2 - Narrow-band red-emitting fluoride phosphors for wide color gamut LED backlights have evoked considerable attention, due to their fascinating optical properties. Unfortunately, poor moisture resistance often restricts their further applications in optoelectronics. Herein we developed a Cs 2 SiF 6 :Mn 4+ red phosphor using a lowerature co-precipitation method and passivating it by using H 2 O 2 . The phosphor shows a very high external quantum efficiency (EQE) of ∼85% and exhibits excellent moisture stability retaining 74% of its emission intensity after being exposed to high temperature (85 °C) and high humidity (85%) (HTHH) for 168 h. Finally, the high brightness white LED devices combined with the passivated Cs 2 SiF 6 :Mn 4+ exhibit high luminous efficacy of 133 lm W -1 and wide color gamut (∼84.7% NTSC). The results demonstrate that the passivated Cs 2 SiF 6 :Mn 4+ with high EQE and excellent moisture-resistance is promising as a narrow-band red emitting phosphor for wide color gamut LED backlights.

AB - Narrow-band red-emitting fluoride phosphors for wide color gamut LED backlights have evoked considerable attention, due to their fascinating optical properties. Unfortunately, poor moisture resistance often restricts their further applications in optoelectronics. Herein we developed a Cs 2 SiF 6 :Mn 4+ red phosphor using a lowerature co-precipitation method and passivating it by using H 2 O 2 . The phosphor shows a very high external quantum efficiency (EQE) of ∼85% and exhibits excellent moisture stability retaining 74% of its emission intensity after being exposed to high temperature (85 °C) and high humidity (85%) (HTHH) for 168 h. Finally, the high brightness white LED devices combined with the passivated Cs 2 SiF 6 :Mn 4+ exhibit high luminous efficacy of 133 lm W -1 and wide color gamut (∼84.7% NTSC). The results demonstrate that the passivated Cs 2 SiF 6 :Mn 4+ with high EQE and excellent moisture-resistance is promising as a narrow-band red emitting phosphor for wide color gamut LED backlights.

UR - https://www.scopus.com/pages/publications/85062215484

U2 - 10.1039/c8tc06083e

DO - 10.1039/c8tc06083e

M3 - Article

AN - SCOPUS:85062215484

SN - 2050-7526

VL - 7

SP - 2401

EP - 2407

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 8

ER -

Liu Y, Zhou Z, Huang L, Brik MG, Si S, Lin L et al. High-performance and moisture-resistant red-emitting Cs ₂ SiF ₆ :Mn ⁴⁺ for high-brightness LED backlighting Journal of Materials Chemistry C. 2019;7(8):2401-2407. doi: 10.1039/c8tc06083e

High-performance and moisture-resistant red-emitting Cs ₂ SiF ₆ :Mn ⁴⁺ for high-brightness LED backlighting

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