Optimised Photoluminescent Phosphors for UV‐excited Light Emitting Systems

Newport, A.; Vecht, A.; Bayley, P. A.; Crossland, W. A.

doi:10.1889/1.1833737

Cited by 7 publications

(5 citation statements)

References 4 publications

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“…The solubility of ZnS in BaS has been studied by Megson [27]; the barium zinc sulfide (Ba 2 ZnS 3 ) was formed by firing BaS and ZnS (in the molar quantities 2BaS:1ZnS) in an oxygen-free nitrogen atmosphere. Its luminescent properties when activated by manganese (II) have been reported in the literature [28][29][30]. The results are different from ours due to different experimental procedures.…”

Section: Introductioncontrasting

confidence: 71%

Photoluminescent properties of Ba2ZnS3:Mn phosphors

Lin¹,

Chang²,

Chang³

et al. 2006

Journal of Alloys and Compounds

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Section: Introductioncontrasting

confidence: 71%

Photoluminescent properties of Ba2ZnS3:Mn phosphors

Lin¹,

Chang²,

Chang³

et al. 2006

Journal of Alloys and Compounds

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“…13 Its luminescent properties when activated by manganese͑II͒ have been reported in the literature. 14,15 Previously the ternary sulfides containing group I and group II metals have been prepared by the reaction of metal carbonate with sulfur at elevated temperatures in an inert atmosphere. 16 The sulfides of group I and group II metals are water soluble.…”

mentioning

confidence: 99%

A Method for the Clean Syntheses of Sulfides/Selenides II. Ternary Sulfides/Selenides

Marsh

Davies

Silver

et al. 2001

J. Electrochem. Soc.

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The syntheses of MGa2S4 (where M=normalCa, Sr, and Zn), CuMS2 (where M=normalIn or Cr), Ba2ZnS3, and CuInSe2 by utilizing sulfur or selenium solutions in hydrazine monohydrate are reported. Scanning electron microscope studies of the morphology of the resulting materials prepared by this route are presented. The photoluminescence spectra of the phosphors SrGa2S4:normalEu. SrGa2S4:normalCe, ZnGa2S4:normalMn, CaGa2S4:normalEu, and Ba2ZnS3:normalMn are displayed. The method is more environmentally friendly than traditional preparations (very little sulfur-based gases are formed). Additionally, it is a simple and rapid preparation, producing a good yield. The procedure facilitates the formation of ternary metal sulfides or selenides. It is further shown that for optimum performance of SrGa2S4:normalEu, the phosphor needs to be fired in a reducing atmosphere to convert all of the Eu3+ to Eu2+. © 2001 The Electrochemical Society. All rights reserved.

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“…To resolve the low device efficiency of conventional color‐filtered LCDs (CF‐assisted LCDs, Figure d), phosphor LCDs (or emissive LCDs) were suggested two decades ago, in which phosphors are replaced with CFs . A near‐UV, violet or blue fluorescent lamp or an LED lamp can be employed as a pumping source to excite the red, green, and blue (RGB) or green and red (GR) phosphors.…”

Section: Introductionmentioning

confidence: 99%

Color‐by‐Blue QD‐Emissive LCD Enabled by Replacing RGB Color Filters with Narrow‐Band GR InP/ZnSeS/ZnS QD Films

Kang

Kim

et al. 2018

Advanced Optical Materials

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Color‐by‐blue quantum dot (QD)‐emissive liquid‐crystal displays (LCDs) with eco‐friendly, green, red (GR) InP/ZnSeS/ZnS QD films are introduced to overcome the disadvantages of conventional color‐by‐white color filter (CF)‐assisted LCDs, such as a narrow viewing angle, low external device efficiency of these types of LCDs, and a restricted color gamut. In this study, the color‐by‐blue InP‐based QD‐emissive LCD consists of a blue (B) light‐emitting diode (LED) and GR InP‐based QD films sandwiched between a light recycling filter and a long‐wavelength pass dichroic filter. The GR InP‐based QDs are synthesized with a high photoluminescence quantum yield (>77%) and narrow bandwidth (<40 nm), which are suitable for display applications. The overall enhancement of InP‐based QD‐emissive LCDs, in this case by the enhanced efficiency of a blue LED backlight transmitted through the LC shutter compared to a white LED backlight and the improved efficiency of the enlarged color gamut, is 2.42 times that of a conventional red, green, and blue (RGB) CF‐LCD with a GR phosphor‐converted (pc)‐LED (a B LED + R K2SiF6:Mn + G β‐SiAlON:Eu phosphor) backlight. Therefore, this considerable enhancement of the external efficiency of a QD‐emissive LCD makes it more feasible as a replacement for conventional RGB CF‐assisted LCDs.

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Optimised Photoluminescent Phosphors for UV‐excited Light Emitting Systems

Cited by 7 publications

References 4 publications

Photoluminescent properties of Ba2ZnS3:Mn phosphors

Photoluminescent properties of Ba2ZnS3:Mn phosphors

A Method for the Clean Syntheses of Sulfides/Selenides II. Ternary Sulfides/Selenides

Color‐by‐Blue QD‐Emissive LCD Enabled by Replacing RGB Color Filters with Narrow‐Band GR InP/ZnSeS/ZnS QD Films

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