지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
The purpose of this study is to extract the major factors related to the deterioration mechanism of white organic light-emitting diodes(WOLED) by performing accelerated testing of temperature, voltage, time, etc., and to develop an accelerated life test(ALT) model. The measurement results of the brightness of the WOLED exhibited that their average brightness tended to increase as the operating voltage increased and that the half-life period of the brightness appeared after approximately 400 hours when the operating voltage was 20V and the ambient temperature was $85^{\circ}C$. It could be seen that although the WOLED showed comparatively the same brightness when the initial acceleration began after the operating voltage was applied to it, its brightness changed excessively after the WOLED's thermal storage had been made. In addition, it was observed that the half-life period was reduced as the ambient temperature and applied voltage increased. The strength of the WOLED which had been maintained in the range of visible light at the maximum load was reduced by the deterioration of the organic light emitting material due to the influence of the operating voltage and temperature, and the reduction of emitted light was small at low voltage and temperature. It could be seen that the failure of the WOLED during the ALT was caused by wear due to load accumulation over time, and that Weibull distribution was appropriate for the life distribution and acceleration was established between test conditions. From the WOLED analysis, it is thought that factors influencing the brightness deterioration are voltage, temperature, etc., and that comprehensive analysis considering discharge control, dielectric tangent margin, etc., would further increase the reliability.
목차
등록된 정보가 없습니다.
참고문헌 (12)
참고문헌 신청
문대규 / 2003 / 백색광을 이용한 OLED조명기술 / 전자부품
추혜용 / 2009 / OLED 조명 산업동향 및 향후 전망 / IT Society Magazine
J. E. Knox / 2006 / Chemical Failure Modes of AlQ3-Based OLEDs: AlQ3 hydrolysis / Phys. Chem. Chem. Phys. 8:1371~1377
V. K Shukla / 2006 / Light Induced Effects on the Morphology and Optical Properties of Alq3 Small Molecular thin Film / Synthetic Metals 156:387~397
X. Y, Synthetic / 2002 / Stable and Current Independent white Emitting Organic Diode / Synthetic Metals 729:9~13
추혜용 / 2009 / OLED 조명 산업동향 및 향후 전망 / IT Society Magazine
J. E. Knox / 2006 / Chemical Failure Modes of AlQ3-Based OLEDs: AlQ3 hydrolysis / Phys. Chem. Chem. Phys. 8:1371~1377
V. K Shukla / 2006 / Light Induced Effects on the Morphology and Optical Properties of Alq3 Small Molecular thin Film / Synthetic Metals 156:387~397
X. Y, Synthetic / 2002 / Stable and Current Independent white Emitting Organic Diode / Synthetic Metals 729:9~13
이 논문의 저자 정보
최근 본 자료
댓글(0)
0