title: Frequency-dependent, alternating current-driven, field-induced polymer electroluminescent devices with high power efficiency.
abstract: A significant enhancement in power efficiency for alternating current-driven field-induced polymer electroluminescent devices is demonstrated by employing a high-k ferroelectric polymer dielectric through impedance matching of the device with the driving source. A peak power efficiency of 34.1 lm W(-1) at a frequency of 65 kHz is achieved, which is 2 to 12 times higher than the previous highest reports.
authors.affiliation: Center for Nanotechnology and Molecular Materials, Department of Physics, Wake Forest University, Winston-Salem, NC, 27105, USA.
authors.forename: Yonghua
authors.initials: Y
authors.lastname: Chen
authors.forename: Yingdong
authors.initials: Y
authors.lastname: Xia
authors.forename: Gregory M
authors.initials: GM
authors.lastname: Smith
authors.forename: David L
authors.initials: DL
authors.lastname: Carroll
keywords: electroluminescent; field-induced; frequency-dependent; power efficiency