Red-emitting YAG:Ce,Mn transparent ceramics for warm WLEDs application

Junrong LING; Youfu ZHOU; Wentao XU; He LIN; Shuai LU; Bin WANG; Kun WANG

doi:10.1007/s40145-019-0346-0

Journal of Advanced Ceramics 2020, 9(1): 45-54 https://doi.org/10.1007/s40145-019-0346-0

Research Article |

Open Access | Issue | Published: 05 February 2020

Red-emitting YAG:Ce,Mn transparent ceramics for warm WLEDs application

Show Author's Information Hide Author's Information Junrong LING^{^a^,^b}, Youfu ZHOU^{^a}(

), Wentao XU^{^a}, He LIN^{^a}, Shuai LU^{^a^,^b}, Bin WANG^{^a^,^b}, Kun WANG^{^c}

a Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

b University of Chinese Academy of Sciences, Beijing 100049, China

c School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China

Keywords:

Mn²⁺ red-emitting, YAG:Ce,Mn transparent ceramics, white light-emitting diodes (WLEDs) application, low color temperature

Cite this article:

LING J, ZHOU Y, XU W, et al. Red-emitting YAG:Ce,Mn transparent ceramics for warm WLEDs application. Journal of Advanced Ceramics, 2020, 9(1): 45-54. https://doi.org/10.1007/s40145-019-0346-0

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Abstract

A series of YAG:Ce,Mn transparent ceramics were prepared via a solid-state reaction-vacuum sintering method. The effects of various Mn²⁺–Si⁴⁺ pair doping levels on the structure, transmittance, and luminescence properties were systematically investigated. These transparent ceramics have average grain sizes of 10–16 μm, clean grain boundaries, and excellent transmittance up to 83.4% at 800 nm. Under the excitation of 460 nm, three obvious emission peaks appear at 533, 590, and 745 nm, which can be assigned to the transition 5d→4f of Ce³⁺ and ⁴T₁→⁶A₁ of Mn²⁺. Thus, the Mn²⁺–Si⁴⁺ pairs can effectively modulate the emission spectrum by compensating broad orange-red and red spectrum component to yield high quality warm white light. After the optimized YAG:Ce,Mn transparent ceramic packaged with blue light-emitting diode (LED) chips, correlated color temperature (CCT) as low as 3723 K and luminous efficiency (LE) as high as 96.54 lm/W were achieved, implying a very promising candidate for application in white light-emitting diodes (WLEDs) industry.

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Red-emitting YAG:Ce,Mn transparent ceramics for warm WLEDs application

Show Author's information Hide Author's Information Junrong LING^{^a^,^b}, Youfu ZHOU^{^a}(

), Wentao XU^{^a}, He LIN^{^a}, Shuai LU^{^a^,^b}, Bin WANG^{^a^,^b}, Kun WANG^{^c}

a Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

b University of Chinese Academy of Sciences, Beijing 100049, China

c School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China

Abstract

Keywords:

Mn²⁺ red-emitting, YAG:Ce,Mn transparent ceramics, white light-emitting diodes (WLEDs) application, low color temperature

Received: 30 April 2019 Revised: 11 July 2019 Accepted: 10 August 2019 Published: 05 February 2020 Issue date: February 2020

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Acknowledgements

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Publication history

Received: 30 April 2019

Revised: 11 July 2019

Accepted: 10 August 2019

Published: 05 February 2020

Issue date: February 2020

Copyright

Acknowledgements

This work was supported by the CAS Priority Research program (XDB20010300, XDA21010204), National Natural Science Foundation of China (201501178), and Natural Science Foundation of Fujian Province (2017H0048).

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