Thermal Aging Performance Analyses of High Color Rendering Index of Glass-Based Phosphor-Converted White-Light-Emitting Diode
| Autor: | Chun-Chin Tsai |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
business.industry Doping Phosphor Color temperature Electronic Optical and Magnetic Materials law.invention Color rendering index law Optoelectronics Thermal stability Electrical and Electronic Engineering Chromaticity Safety Risk Reliability and Quality business Diode Light-emitting diode |
| Zdroj: | IEEE Transactions on Device and Materials Reliability. 15:617-620 |
| ISSN: | 1558-2574 1530-4388 |
| DOI: | 10.1109/tdmr.2015.2464375 |
| Popis: | This paper reported the high-temperature performances of glass-based phosphor-converted warm-white light-emitting diodes (PC-WWLEDs). The fabrication and characteristics of low-temperature phosphor (Yellow:Ce:3+:YAG, Greed:Tb3+:YAG, Red:CaAlClSiN3:Eu2+) doped glass were presented for high color rendering indexes warm-white-light-emitting diodes. As demonstrated, the PC-WLEDs maintained good thermal stability at the high temperature operation; the characterization results of color coordinates $(x, y) = (0.32, 0.28)$ is as follows: quantum yield $(\mbox{QY}) = 55\%$ , color rending index $(\mbox{CRI}) =85$ , and correlated color temperature $(\mbox{CCT}) = 3900\ \mbox{K}$ . The results showed that the PC-WLEDs maintained good thermal stability at the high temperature operation. The QY decay, CRI attenuation and chromaticity shift in glass-based high-power PC-WLEDs were also compared with those of silicone-based counterparts thermally aged at 150 °C and 250 °C. These results indicated that the glass-based PC-WLEDs exhibited better thermal stability than the silicone. The color rendering indexes (CRIs) of glass phosphor hopefully have potential used as a phosphor layer for high-performance and low-cost PC-WLEDs for the next-generation indoor solid-state lighting applications. |
| Databáze: | OpenAIRE |
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