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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
Lim, Ju WonJin, Chang KyuLim, Keun YongLee, Yun JaeKim, Sung-RyongChoi, Byung-IlKim, Tae WhanKim, Dong HaHwang, Do KyungChoi, Won Kook
Ewha Authors
김동하
SCOPUS Author ID
김동하scopus
Issue Date
2017
Journal Title
NANO ENERGY
ISSN
2211-2855JCR Link2211-3282JCR Link
Citation
vol. 33, pp. 12 - 20
Keywords
Barrier filmOrganic solar cellLong term stability
Publisher
ELSEVIER SCIENCE BV
Indexed
SCIE; SCOPUS WOS scopus
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 7.1x10 (5) g m (2) day (1). In OSCs comprising poly[4,8-bis[(2-ethylhexyl)oxy] benzo[1,2-b:4,5-bA]dithio-phene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl) carbonyl] thieno[3,4-b]-thiophenediyl] (PTB7) and [6,6]-phenyl-C(70)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.
DOI
10.1016/j.nanoen.2017.01.022
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자연과학대학 > 화학·나노과학전공 > Journal papers
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