title: Solution-processed inorganic-organic hybrid electron injection layer for polymer light-emitting devices.
abstract: A lithium quinolate complex (Liq) has high solubility in polar solvents such as alcohols and can be spin-coated onto emitting polymers, resulting in a smooth surface morphology. A polymer light-emitting device fabricated with spin-coated Liq as an electron injection layer (EIL) exhibited a lower turn-on voltage and a higher efficiency than a device with spin-coated Cs₂CO₃ and a device with thermally evaporated Ca. The mixture of ZnO nanoparticles and Liq served as an efficient EIL, resulting in a lower driving voltage even in thick films (∼10 nm), and it did not require a high-temperature annealing process.
authors.affiliation: Department of Organic Device Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Chiba
authors.forename: Yong-Jin
authors.initials: YJ
authors.lastname: Pu
authors.forename: Masakatsu
authors.initials: M
authors.lastname: Hirasawa
authors.forename: Akito
authors.initials: A
authors.lastname: Masuhara
authors.forename: Hisahiro
authors.initials: H
authors.lastname: Sasabe
authors.forename: Junji
authors.initials: J
authors.lastname: Kido
mesh_terms: D004579:Electron Transport; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007287:Inorganic Chemicals / Q000737:chemistry*; D008029:Lighting / Q000295:instrumentation*; D009930:Organic Chemicals / Q000737:chemistry*; D012666:Semiconductors; D012996:Solutions
chemical_list: D007287:Inorganic Chemicals; D009930:Organic Chemicals; D012996:Solutions