Analysis and control of the active area scaling effect on white organic light emitting diodes towards lighting applications
Analysis and control of the active area scaling effect on white organic light emitting diodes towards lighting applications
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DOI：
10.1063/1.2347698
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发表时间：
2006-09
影响因子：
4
通讯作者：
C. Piliego;M. Mazzeo;M. Salerno;R. Cingolani;G. Gigli;A. Moro
中科院分区：
文献类型：
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作者：
C. Piliego;M. Mazzeo;M. Salerno;R. Cingolani;G. Gigli;A. Moro
研究了有源区面积为0.25 ~ 9 cm ~ 2的白色有机电致发光器件的性能变化规律。他们观察到亮度和电流密度随着器件有效面积的增加而下降。提出了一种模型，其中这两种效应都归因于铟锡氧化物表面上的电流泄漏的传播。为了限制这些影响对器件性能的影响，他们在阳极触点上插入了金属条图案。这导致器件在9 cm 2的表面上具有1800 cd scinm 2的最大亮度。
The authors investigate the scaling of the performances on white organic light emitting diode in devices having active regions ranging from 0.25to9cm2. They observe a drop in the luminance and in the current density with increasing active area of the devices. A model where both these effects are ascribed to the spread of the current leakage on the indium tin oxide surface is proposed. To limit the consequences of these effects on the device performances, they insert a pattern of metal stripes onto the anode contact. This results in a device with a maximum luminance of 1800cd∕m2 on a surface of 9cm2.