[21a-W631-1~11] 12.2 Characterization and Materials Physics

[21a-W631-9] Development of Water Vapor Permeation Testing Devise and Reference Films to Measure Water Vapor Permeation Rate of 10^-6 g/m²/day

〇Hajime Yoshida¹, Kenta Arai¹, Tokihiko Kobata¹, Takeo Ebina¹, Ryo Ishii¹, Takashi Aizawa¹, Asami Suzuki¹ (1.AIST)

Keywords:organic electroluminescence,Gas barrier,Water vapor transmission rate

High gas barrier films with a water vapor transmission rate (WVTR) of 10^-6 g/m²/day is required to ensure the life time of organic electroluminescence for display and lighting. For evaluating such high gas barrier films, we have developed both a WVTR testing device of a differential pressure method using quadrupole mass spectrometer and standard gas barrier films using a cray/polymer nanocomposite film “Claist”. Their principles and the performances are presented.