期刊
LANGMUIR
卷 31, 期 21, 页码 5836-5842出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.5b00871
关键词
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资金
- European Social Fund [UG 10 022]
- state of Mecklenburg-Vorpommern
- Deutsche Forschungsgemeinschaft [He 1616/14-1, GRK 1947]
- Helmholtz-Gemeinschaft (Helmholtz-Energie-Allianz)
Ultrathin gallium oxide. layers with a thickness of 2.8 +/- 0.2 nm were transferred from the surface of liquid gallium onto: solid substrates, including, conjugated polymer poly(3-hexylthiophene) (P3HT). The gallium oxide exhibits high mechanical stability, Withstanding normal pressures of up to 1 GPa in contact mode scanning force microscopy imaging. Moreover, it lowers the rate of photodegradation of P3HT by 4 orders of magnitude, as compared to uncovered P3HT. This allows us to estimate the upper limits for oxygen and water vapor transmission rates of 0.08 cm(3) m(-2) day(-1) and 0.06 mg m(-2) day(-1) respectively. Hence, similar to other highly functional coatings such as, graphene, ultrathin gallium oxide layers can be regarded as promising candidates for protective layers in flexible organic (opto-)electronics and photovoltaics because they offer permeation barrier functionalities in conjunction with high optical transparency.
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