2024-03-29T09:51:48Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00013115
2023-01-16T04:00:11Z
320:321:322
Study on the Conduction Mechanism of Organic Light-Emitting Diode Using One-Dimensional Discontinuous Model
OGAWA, Takuya
CHO, Don-Chan
KANEKO, Kazue
MORI, Tatsuo
MIZUTANI, Teruyoshi
open access
Copyright (C) 2002 IEICE
organic light emitting diode (OLED)
hopping conduction
field distortion
carrier injection
Fowler-Nordheim emission
We proposed the conduction mechanism of organic light-emitting diode (OLED) using a one-dimensional discontinuous model. We assumed that each emitting molecule corresponds to a hopping site according to the actual charge transfer between adjacent molecules. Both carrier mobility of Alq3 and barrier heights for each carrier were derived from experimental data. We calculate transient behavior of carrier, field, and exciton distribution. Both carrier injections assumed the Schottky injection. In the previous results, when we assumed that calculated current density fit the experimental one in the current density field curve, calculated light-emission intensity did not fit the experimental one in the light-emission field curve. Furthermore, the slope of the calculated light emission-field curve is too small to fit the experimental one. In the previous study, hopping distance was assumed to be 1 nm. In this study, it is assumed to be 1.7 nm. We consider that field dependence of electron injection is too weak to explain only the Schottky emission. When the electron injection is assumed to be both Schottky emission and Fowler-Nordheim emission calculated light-emission field as well as the current-density field curves were fit to the curve of each experimental characteristics.
Institute of Electronics, Information and Communication Engineers
2002-06-01
eng
journal article
VoR
http://hdl.handle.net/2237/15010
https://nagoya.repo.nii.ac.jp/records/13115
http://www.ieice.org/jpn/trans_online/index.html
0916-8516
IEICE transactions on electronics
E85-C
6
1239
1244
https://nagoya.repo.nii.ac.jp/record/13115/files/501.pdf
application/pdf
633.7 kB
2018-02-20