title: An ionic molecular glass as electron injection layer for efficient polymer light-emitting diode.
abstract: An ionic molecular glass based on a dendronized monoammonium salt has been facilely synthesized and utilized as an interfacial electron-injection layer in a light-emitting diode (LED). The characterization of a yellow-green LED that involves an Al cathode and a thin layer of the new compound spin cast from a methanol solution has shown device performances comparable to those obtained with a Ba/Al cathode. Photovoltaic measurements under white light irradiation reveal that a thin layer of the new compound can significantly increase the built-in potential and thus facilitate electron injection from an Al cathode. Furthermore, it is interesting to observe that the new ionic salt could undergo reorganization on the emissive conjugated polymer layer, which leads to the formation of nearly uniform nanoaggregates.
authors.affiliation: Institute of Polymer Optoelectronic Materials and Devices, Key Laboratory of Special Functional Materials, MOE, South China University of Technology (SCUT), Guangzhou 510640, P. R. China.
authors.forename: Gang
authors.initials: G
authors.lastname: Liu
authors.forename: Ai-Yuan
authors.initials: AY
authors.lastname: Li
authors.forename: Ding
authors.initials: D
authors.lastname: An
authors.forename: Hong-Bin
authors.initials: HB
authors.lastname: Wu
authors.forename: Xu-Hui
authors.initials: XH
authors.lastname: Zhu
authors.forename: Yuan
authors.initials: Y
authors.lastname: Li
authors.forename: Xin-Rui
authors.initials: XR
authors.lastname: Miao
authors.forename: Wen-Li
authors.initials: WL
authors.lastname: Deng
authors.forename: Wei
authors.initials: W
authors.lastname: Yang
authors.forename: Yong
authors.initials: Y
authors.lastname: Cao
authors.forename: Jean
authors.initials: J
authors.lastname: Roncali