Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1672166 | Thin Solid Films | 2009 | 4 Pages |
Abstract
We have investigated the combination effect of host–guest materials in an emitting layer on the transient property of an organic light-emitting diode (OLED). We found that an efficient energy transfer owing to the large overlap between the photoluminescence spectrum of host material and the absorption spectrum of guest material was an important factor to improve the response speed of the OLED. As a result, the rise time of optical response was mainly affected by the combination of host–guest materials, and it increased using the optimal guest material, 1,4-bis[2-[4-N,N-di(p-tolyl)amino]phenyl]vinyl]benzene (DSB). A maximum −3 dB cutoff frequency of 15.8 MHz was achieved for an OLED with DSB as a guest material.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Takeshi Fukuda, Bin Wei, Musubu Ichikawa, Yoshio Taniguchi,