Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 5, Issue 16, Pages 4017-4024Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7tc00903h
Keywords
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Funding
- National Key Research and Development Program [2016YFB0401005]
- National Basic Research Program of China [2015CB655000]
- National Natural Science Foundation of China [51502093]
- Science and Technology Program of Guangdong Province [2015B090915001, 2016B090906002]
- Science and Technology Program of Guangzhou [201604040001]
- Pear River S&T Nova Program of Guangzhou [201610010052, 201506010015]
- Tiptop Scientific and Technical Innovative Youth Talents of Guangdong Special Support Program [2015TQ01C777, 2014TQ01C321]
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We fabricated inorganic/organic composite film as encapsulation for top-emitting OLEDs, where the inorganic layer was composed of an Al2O3/MgO laminated structure prepared by atomic layer deposition (ALD), while the solution-processed polymer (CYTOP, PDMS and SU-8) was fabricated as the organic protective layer. It was found that the optimized inorganic/organic bi- layer structure has better barrier performance, leading to a superior water vapor transmission rate (WVTR) as low as 1.05 x 10 (6) g m (2) day (1) at 60 degrees C and 100% R.H., and the encapsulated OLEDs device produces no black spots under a harsh environment (85 degrees C & 85% R.H.) for 250 h. These improvements were attributed to the hydrophobic surface of the capping polymer lowering the adsorption of water vapor into the bulk material.
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