title: Vacuum-deposited, nonpolymeric flexible organic light-emitting devices.
abstract: We demonstrate mechanically flexible, organic light-emitting devices (OLED's) based on the nonpolymetric thin-film materials tris-(8-hydroxyquinoline) aluminum (Alq(3)) and N, N(?) -diphenyl- N, N(?) -bis(3-methylphenyl)1- 1(?) biphenyl-4, 4(?) diamine (TPD). The single heterostructure is vacuum deposited upon a transparent, lightweight, thin plastic substrate precoated with a transparent, conducting indium tin oxide thin film. The flexible OLED performance is comparable with that of conventional OLED's deposited upon glass substrates and does not deteriorate after repeated bending. The large-area (~1 - cm>(2)) devices can be bent without failure even after a permanent fold occurs if they are on the convex substrate surface or over a bend radius of ~0.5>cm if they are on the concave surface. Such devices are useful for ultralightweight, flexible, and comfortable full-color flat panel displays.
authors.forename: G
authors.initials: G
authors.lastname: Gu
authors.forename: P E
authors.initials: PE
authors.lastname: Burrows
authors.forename: S
authors.initials: S
authors.lastname: Venkatesh
authors.forename: S R
authors.initials: SR
authors.lastname: Forrest
authors.forename: M E
authors.initials: ME
authors.lastname: Thompson