Mechanistic study on black and grey spot growth in OLEDs performed on laser-ablated pinholes in the cathode

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• 作者：Peter van de Weijer^a ; ^{peter.vandeweijer@tno.nl} ; Piet C.P. Bouten^a ; Henri Fledderus^a ; Richard R. Janssen^b ; Suzanne H.P.M. de Winter^a ; Hylke B. Akkerman^a
• 关键词：OLED ; Black spots ; Grey spots ; Degradation ; Water ingress ; Operational effect
• 刊名：Organic Electronics
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：42
• 期：Complete
• 页码：59-65
• 全文大小：997 K
• 卷排序：42

文摘

Laser ablation can be used to create a population of pinholes of equal size. The ratio in black spot size in stress and in shelf (operational effect) increases with the test period. The operational effect of grey spot growth is much larger than that of black spots. The larger operational effect of grey spot growth is attributed to lateral proton transport in the PEDOT:PSS layer.