Non-doped deep-blue (λ<400 nm) organic light-emitting diodes (Conference Presentation)

Bo-Yen Lin; Jing-Xiang Huang; Chia-Hsun Chen; Jian-Haur Lee; Chin-Ti Chen; Tien-Lung Chiu; Jiun-Haw Lee

doi:10.1117/12.2631862

3 October 2022 Non-doped deep-blue (λ<400 nm) organic light-emitting diodes (Conference Presentation)

Bo-Yen Lin, Jing-Xiang Huang, Chia-Hsun Chen, Jian-Haur Lee, Chin-Ti Chen, Tien-Lung Chiu, Jiun-Haw Lee

Proceedings Volume PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI; PC1220805 (2022) https://doi.org/10.1117/12.2631862
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States

Abstract

Organic light-emitting diode (OLED) has gain numerous attentions since an efficient OLED was firstly demonstrated by Tang and VanSlyke in 1987. Thanks to lots of efforts paid on their progress including materials and device architecture in past three decades, red and green OLEDs have great success in efficiency and lifetime. However, the development of high efficiency deep-blue counterparts with Commission Internationale de L'Eclairage (CIE) coordinate of y<0.1 currently remains in demand in the market of full-color display applications. For example, to realize the BT.2020 color space standard, the standard blue emission must have CIE coordinates of (0.131,0.046), and that is extremely challenging, especially in material development. Here, a new compound consisting of phenyls groups to connect a benzene core was successfully synthesized. The newly obtained compound exhibited a super wide bandgap of 3.5 eV and a deep-blue emission of approximately 397 nm as well as a photoluminescence quantum yield (PLQY) by 68% in thin film. Consequently, a non-doped OLED using the pristine new compound as emitting layer showed a peak efficiency of 4.9% in external quantum efficiency (EQE) and deep-blue emission with CIE coordinates of (0.16, 0.04). Note that the OLED configuration was bottom emission, which meant the such deep-blue emission resulted from the material itself, rather than microcavity effect. Grazing incidence wide-angle X-ray scattering (GIWAXS) of new compound displayed an order parameter (SGIWAXS) of 0.44, indicating molecules primarily aligned horizontally to the substrate, which contributed to the high efficiency.

Conference Presentation

Citation Download Citation

Bo-Yen Lin, Jing-Xiang Huang, Chia-Hsun Chen, Jian-Haur Lee, Chin-Ti Chen, Tien-Lung Chiu, and Jiun-Haw Lee "Non-doped deep-blue (λ<400 nm) organic light-emitting diodes (Conference Presentation)", Proc. SPIE PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI, PC1220805 (3 October 2022); https://doi.org/10.1117/12.2631862

ACCESS THE FULL ARTICLE

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
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Organic light emitting diodes

External quantum efficiency

Standards development

Quantum efficiency

Luminescence

Molecules

Optical microcavities

Show All Keywords

Keywords/Phrases

Search In:

Publication Years