An ambipolar host material provides highly efficient saturated red PhOLEDs possessing simple device structures.
A highly efficient red electrophosphorescent device exhibited saturated red emission and an impressive external quantum efficiency [eta(ext) = 10.8% (ph/el)] with simple device configuration of doping an iridium complex (Mpq(2)Iracac) into a novel ambipolar spiro-configured donor-acceptor host material (D2ACN) has been developed.
Hung
Wen-Yi
WY
Institute of Optoelectronic Sciences, National Taiwan Ocean University, Keelung, Taiwan 202. wenhung@mail.ntou.edu.tw
Tsai
Tsung-Cheng
TC
Ku
Sung-Yu
SY
Chi
Liang-Chen
LC
Wong
Ken-Tsung
KT