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Accurate and stable equal-pressure measurements of water vapor transmission rate reaching the 10−6 g m−2 day−1 range

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Title: Accurate and stable equal-pressure measurements of water vapor transmission rate reaching the 10−6 g m−2 day−1 range
Authors: Nakano, Yoichiro Browse this author
Yanase, Takashi Browse this author
Nagahama, Taro Browse this author
Yoshida, Hajime Browse this author
Shimada, Toshihiro Browse this author →KAKEN DB
Issue Date: 2016
Publisher: Nature Publishing Group
Journal Title: Scientific Reports
Volume: 6
Start Page: 35408
Publisher DOI: 10.1038/srep35408
Abstract: The water vapor transmission rate (WVTR) of a gas barrier coating is a critically important parameter for flexible organic device packaging, but its accurate measurement without mechanical stress to ultrathin films has been a significant challenge in instrumental analysis. At the current stage, no reliable results have been reported in the range of 10−6 g m−2 day−1 that is required for organic light emitting diodes (OLEDs). In this article, we describe a solution for this difficult, but important measurement, involving enhanced sensitivity by a cold trap, stabilized temperature system, pumped sealing and calibration by a standard conductance element.
Rights: http://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/63405
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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