Abstract
A flexible microcavity organic light-emitting diode (OLED) was fabricated and the emitting characteristics were examined. A pair of right- and left-handed cholesteric liquid crystal (CLC) films were attached to the microcavity OLED between aluminum (Al) and silver (Ag). Sharply directed spontaneous emission was observed from microcavity OLEDs, in which a typical luminescent material, 8-hydroxyquinoline aluminum (Alq3), with a broad emission spectrum was used for emitting layer. The introduction of the CLC film improved both the emission bandwidth and directionality, preserving the turn-on voltage and maximum brightness.
Original language | English |
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Pages (from-to) | 167-172 |
Number of pages | 6 |
Journal | Optics Communications |
Volume | 273 |
Issue number | 1 |
DOIs | |
State | Published - 1 May 2007 |
Bibliographical note
Funding Information:This work is partly supported by 21st century COE program, a Grant-in-Aid for Exploratory Research (16656023) by the Ministry of Education, Science, Sports and Culture, and NEDO (New Energy Technology Development Organization) Grant (Project ID 04A24509).