大面积白色有机发光二极管的电热效应

M. Kumar, J. Gomes, A. Pinto, L. Pereira
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引用次数: 1

摘要

尽管在均匀性和热效应方面存在挑战,但用于照明的oled变得高度相关。在这项工作中,制作了发光面积为16 cm2的白色oled,其色温范围宽(3200 K至10500K),显色指数接近90。CIE坐标在外加电压下是稳定的。热像图显示中心温度为60°C,边缘温度为35°C。通过考虑衬底、电极和有机层的标量电热模型研究了这种效应。得到的串联电阻和正向电压的热变化率分别为- 70 mΩ/°C和-10 mV/°C。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electro-thermal effects in large area white-organic light emitting diodes
OLEDs for lighting became of high relevance, although challenges in the uniformity and thermal effects. In this work, White-OLEDs with 16 cm2 emitting area was made with wide color temperature range (3200 K to 10500K) and color rendering index near 90. The CIE coordinates are stable with applied voltage. Thermal images shows 60°C in the center decreasing to 35°C at the border. This effect was study by a scalar electro-thermal model, considering the substrate, electrodes and organic layers. The thermal changing ratio in the series resistance and forward voltage obtained was of - 70 mΩ/°C and -10 mV/°C respectively.
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