Single‐Component White‐Light Emitters with Excellent Color Rendering Indexes and High Photoluminescence Quantum Efficiencies

2021 ◽  
pp. 2101640
Author(s):  
Linyuan Lian ◽  
Song Wang ◽  
Huaiyi Ding ◽  
Guijie Liang ◽  
Yong‐Biao Zhao ◽  
...  
Keyword(s):  
White Light ◽  
Single Component ◽  
Light Emitters ◽  
Color Rendering ◽  
Excellent Color

White Light-Emitting Diodes with Excellent Color Rendering Based on Organically Capped CdSe Quantum Dots and Sr3SiO5:Ce3+,Li+Phosphors

2008 ◽  
Vol 20 (14) ◽  
pp. 2696-2702 ◽  
Author(s):  
Ho Seong Jang ◽  
Heesun Yang ◽  
Sung Wook Kim ◽  
Ji Yeon Han ◽  
Sang-Geun Lee ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Cdse Quantum Dots ◽  
Light Emitting ◽  
White Light Emitting Diodes ◽  
Color Rendering ◽  
Excellent Color

scholarly journals Single-component Eu3+–Tb3+–Gd3+-grafted polymer with ultra-high color rendering index white-light emission

RSC Advances ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 6762-6771 ◽  
Author(s):  
Lin Liu ◽  
Guorui Fu ◽  
Baoning Li ◽  
Xingqiang Lü ◽  
Wai-Kwok Wong ◽  
...  
Keyword(s):  
White Light ◽  
Light Emission ◽  
Luminous Efficiency ◽  
White Light Emission ◽  
Single Component ◽  
Color Tuning ◽  
Grafted Polymer ◽  
Color Rendering Index ◽  
Cie Coordinates ◽  
Color Rendering

Color-tuning to white-light (CIE coordinates of x = 0.322, y = 0.331; CCT of 5979 K; ultra-high CRI of 94) with a highly luminous efficiency (17.8%) was achieved for single-component Eu3+−Tb3+−Gd3+-grafted polymer Poly(MMA-co-2-co-3-co-4).

A semi-conductive organic–inorganic hybrid emits pure white light with an ultrahigh color rendering index

2017 ◽  
Vol 5 (19) ◽  
pp. 4731-4735 ◽  
Author(s):  
Sasa Wang ◽  
Lina Li ◽  
Zhihua Sun ◽  
Chengmin Ji ◽  
Sijie Liu ◽  
...  
Keyword(s):  
White Light ◽  
Single Component ◽  
Inorganic Hybrid ◽  
Chromaticity Coordinates ◽  
Color Rendering Index ◽  
Cie Chromaticity ◽  
Color Rendering ◽  
Pure White

A single-component semiconductor emits pure white light with CIE chromaticity coordinates of (0.33, 0.33) and an ultrahigh color rendering index of 92.5.

Lanthanide(III) Species as Potential Single Component White Light Emitters

2021 ◽  
Vol 2 (2) ◽  
pp. Article ID 2021-0163-Article ID 2021-0163
Author(s):  
Pablo Fuentealba
Keyword(s):  
White Light ◽  
Single Component ◽  
Light Emitters

Near UV-pumped yellow-emitting Sr8MgSc(PO4)7:Eu2+ phosphor for white-light LEDs with excellent color rendering index

2011 ◽  
Vol 21 (15) ◽  
pp. 5645 ◽  
Author(s):  
Chien-Hao Huang ◽  
Yen-Chi Chen ◽  
Teng-Ming Chen ◽  
Ting-Shan Chan ◽  
Hwo-Shuenn Sheu
Keyword(s):  
White Light ◽  
Color Rendering Index ◽  
Color Rendering ◽  
Excellent Color

scholarly journals Molecular engineering towards efficientwhite-light-emitting perovskite

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Mingming Zhang ◽  
Lili Zhao ◽  
Jiahao Xie ◽  
Qian Zhang ◽  
Xiaoyu Wang ◽  
...  
Keyword(s):  
White Light ◽  
Rational Design ◽  
Coulomb Force ◽  
Molecular Engineering ◽  
Light Emitters ◽  
Light Emitting ◽  
Chromaticity Coordinates ◽  
Branched Chain ◽  
Low Dimensional ◽  
Color Rendering

AbstractLow-dimensional hybrid perovskites have demonstrated excellent performance as white-light emitters. The broadband white emission originates from self-trapped excitons (STEs). Since the mechanism of STEs formation in perovskites is still not clear, preparing new low-dimensional white perovskites relies mostly on screening lots of intercalated organic molecules rather than rational design. Here, we report an atom-substituting strategy to trigger STEs formation in layered perovskites. Halogen-substituted phenyl molecules are applied to synthesize perovskite crystals. The halogen-substituents will withdraw electrons from the branched chain (-R-NH3+) of the phenyl molecule. This will result in positive charge accumulation on -R-NH3+, and thus stronger Coulomb force of bond (-R-NH3+)-(PbBr42−), which facilitates excitons self-trapping. Our designed white perovskites exhibit photoluminescence quantum yield of 32%, color-rendering index of near 90 and chromaticity coordinates close to standard white-light. Our joint experiment-theory study provides insights into the STEs formation in perovskites and will benefit tailoring white perovskites with boosting performance.

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