Eu2+/Sm3+ ions co-doped white light luminescence SrSiO3 glass-ceramics phosphor for White LED

Cui, Zhiguang; Ye, Renguang; Deng, Degang; Yang, Hua; Zhao, Shilong; Jia, Guohua; Li, Chenxia; Xu, Shiqing

doi:10.1016/j.jallcom.2010.12.058

Cited by 80 publications

(32 citation statements)

References 41 publications

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“…More recent works report luminescence of doubly activated (Eu,Bi) CaSiO 3 [31] and SrSiO 3 [32]. Use of Eu 2+ /Sm 3+ doped SrSiO 3 for white light emitting diodes has been proposed by Cui et al [33]. MgSiO 3 :Eu 2+ , Dy 3+ , Mn 2+ was discovered as a red emitting, long lasting phosphor [34].…”

Section: Introductionmentioning

confidence: 99%

A new precipitation based method for preparation of metasilicate phosphors

Talwar

Joshi²,

Moharil

et al. 2011

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

A new precipitation based method for preparation of metasilicate phosphors

Talwar

Joshi²,

Moharil

et al. 2011

Journal of Alloys and Compounds

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“…Since rare earth ions doped white light luminescence glass was first reported by Zhang et al in 1991 [13], it has been investigated by many researchers. The most widely used matrices for white light emission were silicate glasses [5,14,15]. On the contrary, rare earth ions doped phosphate glasses, broadly used in high power laser application, has been seldom studied for W-LEDs.…”

Section: Introductionmentioning

confidence: 99%

White light emission from γ-irradiated Ag/Eu co-doped phosphate glass under NUV light excitation

Song

Chen

et al. 2012

Journal of Alloys and Compounds

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“…Cui et al 39 concentration of Eu 3+ ions in PiG. They reported the corresponding wLED fabrication using optimal conditions to show a LE of 122 lm W −1 , a CCT of 6532 K, and a CRI of 75.…”

Section: Aspects Of Improvement For High-power Applicationsmentioning

confidence: 99%

Review—Phosphor Plates for High-Power LED Applications: Challenges and Opportunities toward Perfect Lighting

Kim

Viswanath

Unithrattil

et al. 2017

ECS J. Solid State Sci. Technol.

127

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In the past decades, solid-state lighting based on phosphors as energy converters has been a fast-growing industry. Phosphorconverted white light-emitting diodes (pc-wLEDs) enable high-power applications and miniaturization; for this, the phosphor must have good stability and high efficiency. In order to satisfy this demand, phosphor plates have been proposed instead of conventional organic-based phosphor binders. In this review, such phosphor plates are categorized according to their synthesis methods, and the advantages and disadvantages of each category are detailed. In addition, we describe the major aspects of phosphor plates that require improvement for applications in high-power devices. For the fabrication of high-power LEDs, the phosphor configuration, color purity, porosity, and particle size of glass powders are key properties to enhance the luminescence efficiency and reduce the generation of heat inside wLED packages, thereby improving thermal stability. The advent of authentic, energy-efficient lighting in the home and workplace significantly affected the modern way of life. Beginning with the mass production of incandescent light bulbs, and with the subsequent evolution of fluorescence lights, lighting technology has developed rapidly in the last few decades. Since Edison's incandescent bulb in 1879, 1 artificial lighting has been developed to increase power output and decrease the size of the system. The development of red light-emitting diodes (LEDs) in 1962 2 and blue LEDs in 1993 3 allowed innovation in lighting and display. In particular, combinations of blue LEDs and yellow phosphors are used for many applications because they can realize cheap and efficient white solid-state lighting with several advantages including long lifetimes, eco-friendly behavior, and the capacity of miniaturization. 4-6In phosphor-converted white LEDs (pc-wLEDs), the phosphor converter dispersed in silicon resin (phosphor-in-silicon; PiS) is directly packed on a blue InGaN chip.7 When driven by a bias current, the emitted blue light absorbed by the phosphor is emitted as yellow light; together with the transmitted blue light, this constitutes white luminescence. However, this method lacks a red component, which entails the drawbacks of a poor color rendering index (CRI) and limited correlated color temperature (CCT). To overcome these drawbacks, one proposed method mixes yellow phosphors with phosphors having green to red emissions under blue excitation. 8 In pc-wLEDs, the color is primarily determined by the ratio of the blue emission from the LED chip to the yellow to red emission from the phosphor. However, the efficacy and brightness are determined by the converted yellow to red emission, as it contributes the bulk of lumens. In this configuration, the heat generated from the LED chip and phosphor cannot be efficiently dissipated because of the poor thermal stability and weak thermal conductivity of the resin, which causes luminous decay and color shifting in white light-emitting diodes (wLEDs).9 When the tempe...

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Eu2+/Sm3+ ions co-doped white light luminescence SrSiO3 glass-ceramics phosphor for White LED

Cited by 80 publications

References 41 publications

A new precipitation based method for preparation of metasilicate phosphors

A new precipitation based method for preparation of metasilicate phosphors

White light emission from γ-irradiated Ag/Eu co-doped phosphate glass under NUV light excitation

Review—Phosphor Plates for High-Power LED Applications: Challenges and Opportunities toward Perfect Lighting

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