• 文献标题:   Laminated Graphene Films for Flexible Transparent Thin Film Encapsulation
  • 文献类型:   Article
  • 作  者:   SEO HK, PARK MH, KIM YH, KWON SJ, JEONG SH, LEE TW
  • 作者关键词:   graphene, flexible lamination encapsulation, polymer light emitting diodes pled, lifetime, water vapor transmission rate wvtr
  • 出版物名称:   ACS APPLIED MATERIALS INTERFACES
  • ISSN:   1944-8244
  • 通讯作者地址:   Pohang Univ Sci Technol POSTECH
  • 被引频次:   29
  • DOI:   10.1021/acsami.6b01639
  • 出版年:   2016

▎ 摘  要

We introduce a simple, inexpensive, and large area flexible transparent lamination encapsulation method that uses graphene films with polydimethylsiloxane (PDMS) buffer on polyethylene terephthalate (PET) substrate. The number Of stacked graphene layers (n(G)) was increased from 2 to 6, and 6-layered graphene-encapsulation showed high impermeability to moisture and air. The graphene-encapsulated polymer light emitting diodes (PLEDs) had stable operating characteristics; and the operational lifetime of encapsulated PLEDs increased as nG increased. Calcium oxidation test data confirmed the improved impermeability of graphene-encapsulation with increased nG. As a practical application, we demonstrated large-area flexible organic light emitting diodes (FOLEDs) and transparent FOLEDs that were encapsulated by our polymer/graphene encapsillant.