Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 38, 2010
Previous Article Next Article

High-efficiency blue organic light-emitting diodes using a 3,5-di(9H-carbazol-9-yl)tetraphenylsilanehostvia a solution-process

Author affiliations

Abstract

We present a solution-processed blue organic light-emitting diode (OLED) with markedly high current efficiency of 41.2 cd A−1 at 100 cd m−2 and 31.1 cd A−1 at 1000 cd m−2. The high efficiency was partly attributed to the use of a molecular host, 3,5-di(9H-carbazol-9-yl)tetraphenylsilane, which possesses a wide triplet band gap, high carrier mobility, ambipolar transport property and high glass transition temperature. Besides the intrinsically good physical properties, the solution-process also played an important role in fabricating the high-efficiency device, since it could make the molecular distribution of host and guest homogeneous in the emissive layer. Moreover, the device efficiency at higher brightness could be markedly enhanced by using an electron-blocking layer. As the microlens was introduced on the glass substrate to enhance the light outcoupling, the resultant device efficiency of the blue OLED further increased to 50.1 cd A−1 at 100 cd m−2 and 37.3 cd A−1 at 1000 cd m−2.

Graphical abstract: High-efficiency blue organic light-emitting diodes using a 3,5-di(9H-carbazol-9-yl)tetraphenylsilane host via a solution-process

Back to tab navigation

Supplementary files

Article information


Submitted
22 Apr 2010
Accepted
29 Jun 2010
First published
27 Aug 2010

J. Mater. Chem., 2010,20, 8411-8416
Article type
Paper

High-efficiency blue organic light-emitting diodes using a 3,5-di(9H-carbazol-9-yl)tetraphenylsilane host via a solution-process

J. Jou, W. Wang, S. Chen, J. Shyue, M. Hsu, C. Lin, S. Shen, C. Wang, C. Liu, C. Chen, M. Wu and S. Liu, J. Mater. Chem., 2010, 20, 8411
DOI: 10.1039/C0JM01163K

Search articles by author

Spotlight

Advertisements