title: Fabrication of organic light-emitting devices comprising stacked light-emitting units by solution-based processes.
abstract: Multi-organic light-emitting devices comprising two light-emitting units stacked in series through a charge-generation layer are fabricated by solution processes. A zinc oxide nanoparticles/polyethylene-imine bilayer is used as the electron-injection layer and phosphomolybdic acid is used as the charge-generation layer. Appropriate choice of solvents during spin-coating of each layer ensures the nine-layered structure fabricated by solution processes.
authors.affiliation: Department of Organic Device Engineering, Research Center for Organic Electronics, Yamagata University, 4-3-16 Johnan, Yonezawa, 992-8510, Japan.
authors.forename: Yong-Jin
authors.initials: YJ
authors.lastname: Pu
authors.forename: Takayuki
authors.initials: T
authors.lastname: Chiba
authors.forename: Kazushige
authors.initials: K
authors.lastname: Ideta
authors.forename: Shogo
authors.initials: S
authors.lastname: Takahashi
authors.forename: Naoya
authors.initials: N
authors.lastname: Aizawa
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Hikichi
authors.forename: Junji
authors.initials: J
authors.lastname: Kido
keywords: multilayer structures; organic light-emitting devices; solution processes