title: High-efficiency fluorescent organic light-emitting devices using sensitizing hosts with a small singlet-triplet exchange energy.
abstract: Materials with small singlet-triplet splits (ΔEST s) are introduced as sensitizing hosts to excite fluorescent dopants, breaking the trade-off between small ΔEST and high radiative decay rates. A highly efficient orange-fluorescent organic light-emitting diode (OLED) is prepared, showing a maximum external quantum efficiency of 12.2%.
authors.affiliation: Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, PR China.
authors.forename: Dongdong
authors.initials: D
authors.lastname: Zhang
authors.forename: Lian
authors.initials: L
authors.lastname: Duan
authors.forename: Chen
authors.initials: C
authors.lastname: Li
authors.forename: Yilang
authors.initials: Y
authors.lastname: Li
authors.forename: Haoyuan
authors.initials: H
authors.lastname: Li
authors.forename: Deqiang
authors.initials: D
authors.lastname: Zhang
authors.forename: Yong
authors.initials: Y
authors.lastname: Qiu
mesh_terms: D004735:Energy Transfer; D005456:Fluorescent Dyes / Q000737:chemistry*; D008027:Light; D008163:Luminescent Measurements; D009930:Organic Chemicals / Q000737:chemistry*; D012666:Semiconductors
chemical_list: D005456:Fluorescent Dyes; D009930:Organic Chemicals
keywords: fluorescent organic light-emitting devices; high efficiency; sensitizing hosts; small singlet-triplet exchange energy; thermally activated delayed fluorescence