Synthesis and characterization of green Zn-Ag-In-S and red Zn-Cu-In-S quantum dots for ultrahigh color quality of down-converted white LEDs

ACS Applied Materials & Interfaces
Hee Chang YoonYoung Rag Do

Abstract

Eco-friendly green Zn-Ag-In-S (ZAIS) and red Zn-Cu-In-S (ZCIS) core/shell-like alloyed quantum dots (QDs) have been synthesized by a facile hot-injection method with a multiple injection approach. Broad full-width at half-maximum (fwhm) of the photoluminescence (PL) emission and tunability of the green ZAIS and red ZCIS QDs were obtained by adopting a low-temperature core growth and high-temperature multiple alloyed reaction. The alloyed green ZAIS and red ZCIS QDs reached PL quantum yields as high as 0.61 and 0.53; fwhm of the PL peaks were as wide as 81 and 106 nm, respectively. This demonstrates the practical realization of white down-converted light-emitting diodes (DC-LEDs), fully covering the whole visible wavelength range and the cyan gap, using two broad fwhm green ZAIS and red ZCIS QDs. We also characterized the vision and color performance using luminous efficacy (LE), color rendering index (CRI), special CRI for strong red (R9), and color quality scale (CQS) of white DC-LEDs incorporated with green ZAIS and red ZCIS QDs at the correlated color temperature (CCT) range of 2700-10 000 K. The tricolor white DC-LED using broad fwhm green-emitting ZAIS and red-emitting ZCIS core/shell-like alloyed QDs exhibits a moderate L...Continue Reading

References

Jul 18, 2001·Journal of the American Chemical Society·Y W JunJ Cheon
Mar 4, 2006·Expert Review of Molecular Diagnostics·Andrew M SmithXiaohu Gao
Sep 25, 2007·Journal of the American Chemical Society·Tsukasa TorimotoSusumu Kuwabata
Jun 28, 2008·Journal of the American Chemical Society·Peter M Allen, Moungi G Bawendi
Aug 9, 2008·Journal of the American Chemical Society·Liang Li, Peter Reiss
Dec 22, 2009·Chemical Communications : Chem Comm·Taro UematsuSusumu Kuwabata
Mar 12, 2010·Chemical Communications : Chem Comm·Tsukasa TorimotoSusumu Kuwabata
Jun 3, 2010·Advanced Materials·Eunjoo JangYounghwan Kim
Mar 25, 2011·Chemical Communications : Chem Comm·Xiaosheng TangJunmin Xue
Apr 20, 2012·Optics Express·Ping ZhongMinhao Zhang
Jul 13, 2012·Nano Letters·Evren MutlugunHilmi Volkan Demir
Nov 6, 2013·ACS Applied Materials & Interfaces·Joanna Kolny-Olesiak, Horst Weller
Mar 7, 2013·The Journal of Physical Chemistry Letters·Pralay K SantraPrashant V Kamat

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Citations

Dec 3, 2015·ACS Applied Materials & Interfaces·Xiaojiao KangDaocheng Pan
Nov 19, 2015·Chemical Communications : Chem Comm·Dae-Yeon Jo, Heesun Yang
Dec 20, 2015·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Ward van der StamCelso de Mello Donega
Aug 24, 2016·The Journal of Physical Chemistry Letters·Anne C BerendsCelso de Mello Donegá
Dec 10, 2016·ACS Applied Materials & Interfaces·Krzysztof GugulaMichael Bredol
Apr 11, 2017·Chemical Reviews·Claudia CoughlanKevin M Ryan
Apr 15, 2016·Scientific Reports·Tong-Tong XuanHui-Li Li
Jul 12, 2017·Nanoscale·Noh Soo HanJae Kyu Song
Feb 25, 2020·Chemical Communications : Chem Comm·Riccardo MarinFiorenzo Vetrone
Aug 21, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Wubshet Mekonnen GirmaJia-Yaw Chang
Dec 28, 2016·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Jiangluqi SongXiaoliang Xu
Jan 31, 2019·ACS Applied Materials & Interfaces·Jong-Hoon KimHeesun Yang
Feb 6, 2017·ACS Applied Materials & Interfaces·Steven M KoboskoPrashant V Kamat

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