고 출력 백색 변환용 LED(3W용)의 고장메커니즘 비교

다국어 초록 (Multilingual Abstract)

This paper presents a comparison of the failure mechanism for high power converted white LEDs(3W) with the commercially available YAG:Ce and silicate phosphor. We carry out the normal aging life test for 10,000 hours, the high temperature aging test for 8,000 hours, the high temperature and humidity aging test for 8,000 hours and the current aging testing for 5,000 hours. The optical and electrical parameters of LEDs were monitored, such as lumen, correlated color temperature (CCT), chromaticity coordinates(x, y), thermal resistance, I -V curve and spectrum intensity. The stress induced a luminous flux decay on LED in all experiments and causes a failure. So we try to find out what"s a main failure mechanism for a high power LED.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험 방법
• 3. 결론
• 참고문헌

참고문헌 (Reference)

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