| Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2014) | |
| Thin Films | Wednesday Sessions |
| Session TF-WeP |
| Session: | Thin Films Poster Session |
| Presenter: | Namsu Kim, Korea Electronics Technology Institute (KETI), Republic of Korea |
| Authors: | N. Kim, Korea Electronics Technology Institute (KETI), Republic of Korea D. Kim, Korea Electronics Technology Institute (KETI) K. Hwang, University of California at San Diego S. Graham, Georgia Institute of Technology S. Kim, Korea Electronics Technology Institute (KETI) |
| Correspondent: | Click to Email |
One of primary technical obstacles toward commercialization in organic device is the achievement of reliable long lifetimes. The low work function materials and transparent conductive oxides used to form electrical contacts to the active layers are generally reactive and susceptible to water vapor and oxygen. Thus, developing thin-film encapsulation technologies protecting organic electronic devices from water vapor and oxygen is critical. In addition, variable environment of photovoltaic modules makes it difficult in predicting lifetime of them.
In this study, the lifetime of encapsulated organic device under specific weather condition was predicted based on total amount of permeated water permeated through barrier layers. Previous study presented the relation between the overall barrier performance and the shelf lifetime of encapsulated organic solar cells experimentally. Based on previous study, the total permeated water vapor through identical barrier layer under continuously varying environment can be calculated and compared to experimental data. For analytical calculation, diffusion and solubility coefficients were experimentally determined using quartz crystal microbalance as well as water vapor permeation instrument.