title: H-shaped oligofluorenes for highly air-stable and low-threshold non-doped deep blue lasing.
abstract: H-shaped oligofluorenes as gain media exhibit excellent photo- (large robustness against oxidation) and thermal stabilities in ambient atmosphere for large σe and low-threshold (0.22 nJ pulse(-1) ) deep blue distributed feedback (DFB) lasers. Their amplified spontaneous emission (ASE) thresholds increase less than 3-fold and the emission spectra exhibit almost no shift with film samples annealed up to 200 °C in open air.
authors.affiliation: Key Laboratory for Organic Electronics & Information Displays (KLOEID), Jiangsu-Singapore Joint Research Center for Organic/Bio Electronics & Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing, 210046, P.R. China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Qian
authors.forename: Qi
authors.initials: Q
authors.lastname: Wei
authors.forename: Gonzalo
authors.initials: G
authors.lastname: Del Pozo
authors.forename: Marta M
authors.initials: MM
authors.lastname: Mróz
authors.forename: Larry
authors.initials: L
authors.lastname: Lüer
authors.forename: Santiago
authors.initials: S
authors.lastname: Casado
authors.forename: Juan
authors.initials: J
authors.lastname: Cabanillas-Gonzalez
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhang
authors.forename: Linghai
authors.initials: L
authors.lastname: Xie
authors.forename: Ruidong
authors.initials: R
authors.lastname: Xia
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
keywords: frediel-crafts reaction; oligofluorenes; organic lasers; organic semiconductors; photo/thermal stability