Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0921-5107(01)00599-2
Title: Degradation of organic light-emitting devices due to formation and growth of dark spots
Authors: Lim, S.F.
Wang, W.
Chua, S.J. 
Keywords: Dark spots
Degradation
Formation
Growth
OLED devices
Issue Date: 22-Aug-2001
Citation: Lim, S.F., Wang, W., Chua, S.J. (2001-08-22). Degradation of organic light-emitting devices due to formation and growth of dark spots. Materials Science and Engineering B: Solid-State Materials for Advanced Technology 85 (2-3) : 154-159. ScholarBank@NUS Repository. https://doi.org/10.1016/S0921-5107(01)00599-2
Abstract: We present our in-situ experimental observations of dark spot growth in OLED devices using optical microscopy. In order to understand the formation mechanism of dark spots, we employed silica particle to intentionally create some predictable pinhole defects on the protective layer. We found a linear growth of all dark spot as well as a linear correlation between growth rate and area. These results indicate that dark spot formation is related to corrosion of the calcium or other materials with water and oxygen through pinhole defects. Furthermore, we found a correlation between the degradation of entire devices and growth of all dark spots, which allows us to predict the lifetime of entire devices. © 2001 Elsevier Science B.V. All rights reserved.
Source Title: Materials Science and Engineering B: Solid-State Materials for Advanced Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/55511
ISSN: 09215107
DOI: 10.1016/S0921-5107(01)00599-2
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