CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 13122 > Article
Presentation + Paper
30 September 2024 Blue organic light-emitting diode operated by extremely low driving voltage
Seiichiro Izawa
Author Affiliations +
Proceedings Volume 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII; 1312215 (2024) https://doi.org/10.1117/12.3025358
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States
Abstract
Among the three primary colors, blue emission in organic light-emitting diodes (OLEDs) are highly important but very difficult to develop. OLEDs have already been commercialized; however, blue OLEDs have the problem of requiring a high applied voltage due to the high-energy of blue emission. Herein, we discovered a novel combination of a blue emitter and an electron acceptor and realized upconversion emission through triplet-triplet annihilation near the interface. The OLED with the combination shows ultralow voltage turn-on at 1.47 V for blue emission with a peak wavelength at 462 nm (2.68 eV). This OLED reaches 100 cd/m2 , which is equivalent to the luminance of a typical commercial display, at 1.97 V. Blue emission from the OLED is achieved by the selective excitation of the low-energy triplet states at a low applied voltage by using the charge transfer (CT) state as a precursor and triplet-triplet annihilation, which forms one emissive high-energy singlet from two low-energy triplet excitons. The UC process of the excited states greatly reduce the turn-on voltage of OLED.
Conference Presentation
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Seiichiro Izawa "Blue organic light-emitting diode operated by extremely low driving voltage", Proc. SPIE 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII, 1312215 (30 September 2024); https://doi.org/10.1117/12.3025358
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 3 PAGES + PRESENTATION
DOWNLOAD PAPER SAVE TO MY LIBRARY
WATCH
PRESENTATION
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Organic light emitting diodes
Excitons
Interfaces
Upconversion
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top