Transparent high-performance SiOxNy/SiOx barrier films for organic photovoltaic cells with high durability

Title
Transparent high-performance SiOxNy/SiOx barrier films for organic photovoltaic cells with high durability
Authors
최원국황도경이윤재임근용임주원진창규김성룡최병일김태환김동하
Keywords
barrier film; organic photovoltaics
Issue Date
2017-03
Publisher
Nano energy
Citation
VOL 33-20
Abstract
The science and technology of organic electronics have made consistent progress. However, the long-term stability of organic devices is a critical issue that remains to be resolved. Encapsulation is a straightforward and practical means to protect organic materials from oxygen or moisture and thus improve air stability. Here, we report a high-performance flexible inorganic SiNx/SiOxNy hybrid barrier film for application in organic solar cells (OSCs). This hybrid barrier film shows average transmittance of 85.5% and a water-vapor transmission rate of 7.1×10– 5 g m− 2 day− 1. In OSCs comprising poly[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-bA]dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno[3,4-b]-thiophenediyl] (PTB7) and [6,6]-phenyl-C70-butyric acid methyl ester (PC70BM), which were encapsulated by the SiNx/SiOxNy hybrid barrier film, the power-conversion efficiency remained above 86% of the initial value even after 2000 h of storage in air, which is comparable to that obtained for a device encapsulated by a glass lid.
URI
http://pubs.kist.re.kr/handle/201004/65576
ISSN
2211-2855
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KIST Publication > Article
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