Oxadiazole-triphenylamine derivatives for OLEDs

Wallace C. H. Choy; K.N. Hui; Y.J. Liang; K.L. Tong; S.K. So; Louis M. Leung; N. J. Xiang; Gong Menglian

doi:10.1117/12.616721

9 October 2005 Oxadiazole-triphenylamine derivatives for OLEDs

Wallace C. H. Choy, K.N. Hui, Y.J. Liang, K.L. Tong, S.K. So, Louis M. Leung, N. J. Xiang, Gong Menglian

Proceedings Volume 5937, Organic Light-Emitting Materials and Devices IX; 59371L (2005) https://doi.org/10.1117/12.616721
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Electroluminescent bipolar small molecules have been attracted with great interests recently. They are found to exhibit many interesting features such as (i) reducing the structural complexity of organic light emitting diodes (OLEDs) from multilayer heterojunction to monolayer homojunction devices; (ii) offering molecular p/n junction, and (iii) minimizing the formation of exciplexes. In this paper, the optical and electrical properties of novel oxadiazole-triphenylamine derivatives will be investigated. The derivatives are N-phenyl-N-(4-(5-phenyl-1,3,4-oxadiazol-2-yl)phenyl)phenylamine (POT) and N-phenyl-N-(4-(5-p-tolyl-1,3,4-oxadiazol-2-yl)phenyl)phenylamine (m-POT). The absolute absorption coefficient and refractive index have been investigated by ellipsometry and modeling. The electron mobility of POT at room temperature has been studied. The results show that the derivatives have bipolar characteristics. The electron-transporting properties of POT is better than that of m-POT. The EL emission peaks of POT and m-POT are the same at 435nm which match with their photoluminescent (PL) peaks.

Citation Download Citation

Wallace C. H. Choy, K.N. Hui, Y.J. Liang, K.L. Tong, S.K. So, Louis M. Leung, N. J. Xiang, and Gong Menglian "Oxadiazole-triphenylamine derivatives for OLEDs", Proc. SPIE 5937, Organic Light-Emitting Materials and Devices IX, 59371L (9 October 2005); https://doi.org/10.1117/12.616721

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
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Absorption

Refractive index

Electron transport

Organic light emitting diodes

Molecules

Aluminum

Calcium

Show All Keywords

Keywords/Phrases

Search In:

Publication Years