백색 발광다이오드의 특성에 대한 황색 형광체의 영향
We have investigated the optical and electrical properties of surface mounted white light emitting diode (LED) chips prepared by using yellow phosphors on the blue LED chip. The yellow phosphor mixed with transparent epoxy was coated on the prepared LED chip. The optimum mixing conditions with epoxy...
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| Published in | Biuletyn Uniejowski Vol. 40; no. 2; pp. 103 - 106 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | Korean |
| Published |
한국표면공학회
2007
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1225-8024 2299-8403 2288-8403 |
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| Abstract | We have investigated the optical and electrical properties of surface mounted white light emitting diode (LED) chips prepared by using yellow phosphors on the blue LED chip. The yellow phosphor mixed with transparent epoxy was coated on the prepared LED chip. The optimum mixing conditions with epoxy and yellow phosphor is obtained at the mixing ratio of epoxy:yellow phosphor = 97:3 wt%. The maximum luminance and light emitting efficiency are above $80,000cd/m^2$ and 23.2 lm/W, respectively, at the bias voltage of 2.9 V. There was no distinct change in the luminance strength with changing of the yellow phosphor ratios. The current of the white LED chip is about 30 mA at 2.9 V. |
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| AbstractList | We have investigated the optical and electrical properties of surface mounted white light emitting diode (LED) chips prepared by using yellow phosphors on the blue LED chip. The yellow phosphor mixed with transparent epoxy was coated on the prepared LED chip. The optimum mixing conditions with epoxy and yellow phosphor is obtained at the mixing ratio of epoxy:yellow phosphor = 97:3 wt%. The maximum luminance and light emitting efficiency are above $80,000cd/m^2$ and 23.2 lm/W, respectively, at the bias voltage of 2.9 V. There was no distinct change in the luminance strength with changing of the yellow phosphor ratios. The current of the white LED chip is about 30 mA at 2.9 V. We have investigated the optical and electrical properties of surface mounted white light emitting diode (LED) chips prepared by using yellow phosphors on the blue LED chip. The yellow phosphor mixed with transparent epoxy was coated on the prepared LED chip. The optimum mixing conditions with epoxy and yellow phosphor is obtained at the mixing ratio of epoxy:yellow phosphor = 97:3 wt%. The maximum luminance and light emitting efficiency are above 80,000 cd/m2 and 23.2 lm/W, respectively, at the bias voltage of 2.9 V. There was no distinct change in the luminance strength with changing of the yellow phosphor ratios. The current of the white LED chip is about 30 mA at 2.9 V. KCI Citation Count: 1 |
| Author | 장호정(Ho Jung Chang) 손창식(Chang-Sik Son) 허재성(Jae Sung Hur) |
| Author_xml | – sequence: 1 fullname: 장호정(Ho Jung Chang) – sequence: 2 fullname: 손창식(Chang-Sik Son) – sequence: 3 fullname: 허재성(Jae Sung Hur) |
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| Discipline | History & Archaeology Engineering |
| DocumentTitleAlternate | A Study on Desalization and Corrosion Products Formed on Salinized Archaeological Iron Artifacts |
| DocumentTitle_FL | Effect of Yellow Phosphor on Characteristics of White Light Emitting Diode |
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| Keywords | Yellow phosphor Luminance White LED |
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| Snippet | We have investigated the optical and electrical properties of surface mounted white light emitting diode (LED) chips prepared by using yellow phosphors on the... |
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| StartPage | 103 |
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| Title | 백색 발광다이오드의 특성에 대한 황색 형광체의 영향 |
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