journal article·2021-07

Glass-ceramic composites for high-power white-light-emitting diodes

Alessandro Longato, Sebastiano Picco, Lorenzo Moro, Matteo Buffolo, Carlo De Santi, Nicola Trivellin, Gaudenzio Meneghesso, Matteo Meneghini, Enrico Della Gaspera, Massimo Guglielmi, Alessandro Martucci

Ceramics International· Volume 47· Issue 13
Publisher page

Abstract

Abstract In this paper we report on the study of sintered ceramic composites based on a low melting glass in which ZnO nanocrystals and commercial YAG:Ce3+ phosphor are embedded. A low Tg is necessary to avoid high temperature sintering which can damage the optical properties of the embedded phosphor, while ZnO is introduced to increase the thermal conductivity of the system. The compositions have been optimized in terms of stability, sintering efficiency and thermal conductivity. Selected samples were optically characterized using a GaN high power multimode 450 nm Laser Diode, with a maximum output power of 1.6 W at 1.5 A.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: GaN-based semiconductor devices and materials · Luminescence Properties of Advanced Materials · Semiconductor Quantum Structures and Devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (27)

Show source-provided references
1. “Review — phosphor plates for high-power LED Applications : challenges and opportunities toward perfect lighting review — phosphor plates for high-power LED Applications : challenges and opportunities toward perfect lighting10.1149/2.0181801jss ↗
2. Status and future of high-power light-emitting diodes for solid-state lighting10.1109/JDT.2007.895339 ↗
3. Prospects for LED lighting10.1038/nphoton.2009.32 ↗
4. A novel phosphor for glareless white light-emitting diodes10.1038/ncomms2138 ↗
5. High power laser-driven ceramic phosphor plate for outstanding efficient white light conversion in application of automotive lighting
6. Measurement of excited-state-absorption loss for Ce3+ in Y3Al5O12 and implications for tunable 5d->4f rare-earth lasers
7. Fabrication and characterization of GaN/InGaN/AlGaN double heterostructure LEDs and their application in luminescence conversion LEDs10.1016/S0921-5107(98)00352-3 ↗
8. Insight into the thermal quenching mechanism for Y3Al5O12:Ce3+ through thermoluminescence excitation spectroscopy10.1021/acs.jpcc.5b08828 ↗
9. “Laser-activated remote phosphor light engine for projection applications,” in Proc. SPIE 9578
10. Lighting with laser diodes10.1515/aot-2013-0031 ↗
11. Microelectronics Reliability Light emitting diodes reliability review10.1016/j.microrel.2011.07.063 ↗
12. Environmental degradation of an epoxy resin matrix10.1002/app.1986.070320710 ↗
13. Ceramic phosphors for light conversion in LEDs10.1149/2.023302jss ↗
14. Phosphor-in-Glass for high-powered remote-type white AC-LED10.1021/am506251z ↗
15. “A new-generation color converter for high-power white LED : transparent Ce3+:YAG phosphor-in-glass10.1002/lpor.201300140 ↗
16. Atomic arrangement of a zinc-tellurite glass10.1016/S0277-5387(00)84436-8 ↗
17. Structure and optical properties of rare earth-doped zinc oxyhalide tellurite glasses10.1016/S0022-3093(97)90125-3 ↗
18. Effect of ZnO on the thermal properties of tellurite glass
19. Laser-based lighting: experimental analysis and perspectives10.3390/ma10101166 ↗
20. Chromaticity-tunable phosphor-in-glass for long-lifetime high-power warm w-LEDs10.1039/C5TC01057H ↗
21. Transient plane source techniques for thermal conductivity and thermal diffusivity measurements of solid materials10.1063/1.1142087 ↗
22. The effective thermal conductivity of a multi-phase system
23. “Thermal Conductivity : VIII , A theory of thermal conductivity of porous materials10.1111/j.1551-2916.1954.tb20107.x ↗
24. A micro-structural distortion mechanism on the thermal degradation of Y3Al5O12:Ce3+ phosphor10.1016/j.jallcom.2017.10.102 ↗
25. Facile synthesis of a thermally stable Ce3+: Y3Al5O12 phosphor-in-glass for white LEDs10.1039/C5CE01365H ↗
26. Estimation of peak Raman gain coefficients for Barium-Bismuth-Tellurite glasses from spontaneous Raman cross-section experiments10.1364/OE.17.009071 ↗
27. Synthesis and optical properties of ZnO-TeO2glass system10.3844/ajassp.2009.1489.1494 ↗