Narrow‐Band Red‐Emitting Phosphor K 2 SiF 6 :Mn 4+ : HF‐Free Synthesis, Surface Modification, and Application for Warm White LEDs

2019 ◽  
Vol 4 (13) ◽  
pp. 3891-3897 ◽  
Author(s):  
Lei Yang ◽  
Song Wang ◽  
Yige Wang ◽  
Jing Wang
Keyword(s):  
Surface Modification ◽  
Narrow Band ◽  
White Leds ◽  
Red Emitting Phosphor

scholarly journals A STUDY OF RED-EMITTING PHOSPHOR OF K2SiF6:Mn4+ FOR WARM WHITE LEDs

2018 ◽  
Vol 56 (1A) ◽  
pp. 183 ◽  
Author(s):  
Nguyen Le Anh
Keyword(s):  
Energy Transfer ◽  
Narrow Band ◽  
Light Emitting Diode ◽  
Forbidden States ◽  
Red Emission ◽  
Light Emitting ◽  
White Leds ◽  
Band Emission ◽  
Red Emitting Phosphor

This study focuses on the fabrication of red-emitting phosphor based on K2SiF6: Mn4+ phosphor. Characteristic emissive peaks in the red region of the Mn4+ ions involve the energy transfer from spin-forbidden states of 2Eg → 4A2, showing narrow band emission peaks at 609, 614, 631, 635 and 647 nm. Meanwhile, their absorptive peaks involve the energy transfer from spin-allowed states of 4A2 → 4Tg; the excited wavelength of the Mn4+ is in the range 360 - 460 nm. Thus, the K2SiF6: Mn4+ phosphor is particularly suitable for redundancy of 460 nm - Light Emitting Diode (LED); it complements the red emission of the commercial White LEDs.

Narrow band red emitting phosphor with negligible concentration quenching for hybrid white LEDs and plant growth applications

2021 ◽  
Author(s):  
Kasturi Singh ◽  
R. Marikumar ◽  
Rachna Devi ◽  
Sivakumar Vaidyanathan
Keyword(s):  
Plant Growth ◽  
Narrow Band ◽  
Concentration Quenching ◽  
White Led ◽  
White Leds ◽  
Red Emitting Phosphor

¬Narrow band red emitters is the key to solve the problem encountered by the current white LED technology. In this context, a series of new red emitting Li3BaSrLa3¬(MoO4)8:Eu3+ phosphors were...

Narrow-band red emitting phosphor BaTiF6:Mn4+: preparation, characterization and application for warm white LED devices

2016 ◽  
Vol 45 (44) ◽  
pp. 17886-17895 ◽  
Author(s):  
Xiaoli Gao ◽  
Yan Song ◽  
Guixia Liu ◽  
Xiangting Dong ◽  
Jinxian Wang ◽  
...  
Keyword(s):  
Narrow Band ◽  
White Led ◽  
White Leds ◽  
Blue Chip ◽  
Red Emitting Phosphor

A narrow-band red emitting BaTiF6:Mn4+phosphor with a microspindle morphology is applied to warm white LEDs by combination with a blue chip and YAG:Ce3+.

A novel red emitting phosphor of Eu3+ doped TTB-type niobate NaSr2Nb5O15 for white LEDs

2013 ◽  
Vol 48 (5) ◽  
pp. 1995-1998 ◽  
Author(s):  
Ge Zhu ◽  
Zhipeng Ci ◽  
Chaoyang Ma ◽  
Yurong Shi ◽  
Yuhua Wang
Keyword(s):  
White Leds ◽  
Red Emitting Phosphor

Luminescence properties of Mn4+ with high 2Eg level energy in the polyfluoride Na3Li3Sc2F12

2020 ◽  
Vol 49 (33) ◽  
pp. 11613-11617
Author(s):  
Hong Li ◽  
Yan Liu ◽  
Shu Tang ◽  
Lijun Luo ◽  
Qiang Zhou ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Thermal Quenching ◽  
Luminescence Properties ◽  
Level Energy ◽  
Red Emission ◽  
White Leds ◽  
Red Emitting Phosphor

Red-emitting phosphor Na3Li3Sc2F12:Mn4+ with the high 2Eg level energy shows intensive red emission accompanied with the high external quantum efficiency and thermal-quenching resistance for warm white LEDs.

Synthesis and warm-white LED applications of an efficient narrow-band red emitting phosphor, Rb2ZrF6:Mn4+

2017 ◽  
Vol 5 (29) ◽  
pp. 7253-7261 ◽  
Author(s):  
L. Y. Wang ◽  
E. H. Song ◽  
Y. Y. Zhou ◽  
T. T. Deng ◽  
S. Ye ◽  
...  
Keyword(s):  
Narrow Band ◽  
Precipitation Method ◽  
White Led ◽  
Red Phosphor ◽  
Yellow Phosphor ◽  
Co Precipitation ◽  
Red Emitting Phosphor

Phosphor Rb2ZrF6:Mn4+has been synthesizedviaa co-precipitation method. Series of WLEDs were fabricated by combining YAG:Ce3+yellow phosphor and different amount of Rb2ZrF6:Mn4+red phosphor with InGaN blue chips.

A novel red emitting phosphor LiBaB9 O15 :Sm2+ /Sm3+ , li+ with broad excitation band for white LEDs

Luminescence ◽  
2018 ◽  
Vol 33 (2) ◽  
pp. 438-442 ◽  
Author(s):  
Ting Li ◽  
Zhijun Wang ◽  
Panlai Li ◽  
Shuchao Xu ◽  
Qiongyu Bai ◽  
...  
Keyword(s):  
Excitation Band ◽  
Broad Excitation Band ◽  
White Leds ◽  
Red Emitting Phosphor

Ca3Lu(GaO)3(BO3)4:Eu3+: A novel high-brightness and thermal-stable red-emitting phosphor for white LEDs

2018 ◽  
Vol 202 ◽  
pp. 403-408 ◽  
Author(s):  
Liangling Sun ◽  
Heng Guo ◽  
Jia Liang ◽  
Bin Li ◽  
Xiaoyong Huang
Keyword(s):  
High Brightness ◽  
White Leds ◽  
Thermal Stable ◽  
Red Emitting Phosphor

Narrow-Band Photoluminescence from Cadmium-Free I-III-VI Ternary Semiconductor Quantum Dots By Surface Modification

2020 ◽  
Vol MA2020-02 (42) ◽  
pp. 2727-2727
Author(s):  
Taro Uematsu ◽  
Kazutaka Wajima ◽  
Watcharaporn Hoisang ◽  
Dharmendar Kumar Sharma ◽  
Shuzo Hirata ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Surface Modification ◽  
Narrow Band ◽  
Semiconductor Quantum Dots ◽  
Ternary Semiconductor

scholarly journals Novel red-emitting phosphor Li2MgZrO4:Mn4+,Ga3+ for warm white LEDs based on blue-emitting chip

RSC Advances ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 5354-5361 ◽  
Author(s):  
Wen Yan ◽  
Siguo Xiao ◽  
Xiaoliang Yang
Keyword(s):  
Excitation Intensity ◽  
White Leds ◽  
Red Emitting Phosphor

PLE spectra of the phosphors. Inset (a) excitation intensity at 352 nm and 468 nm as function of doping Ga3+ concentration. Inset (b) ratio of excitation intensity at 468 nm to that at 352 nm as function of Ga3+ concentration.

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