Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 25, Issue 31, Pages 5066-5074Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201501326
Keywords
-
Categories
Funding
- Bavarian Network Solar Technologies Go Hybrid
- Fonds der Chemischen Industrie (FCI) in the Liebig grant
- EAM Starting Grant of the Cluster of Excellence Engineering of Advanced Materials (EAM)
Ask authors/readers for more resources
This work demonstrates a novel proof-of-concept to implement pentacene derivatives as emitters for the third generation of light-emitting electrochemical cells based on small-molecules (SM-LECs). Here, a straightforward procedure is shown to control the chromaticity of pentacene-based lighting devices by means of a photoinduced cycloaddition process of the 6,13-bis (triisopropylsilylethynyl) (TIPS)-pentacene that leads to the formation of anthracene-core dimeric species featuring a high-energy emission. Without using the procedure, SM-LECs featuring deep-red emission with Commission Internationale d'Eclairage (CIE) coordinates of x = 0.69/y = 0.31 and irradiance of 0.4 mu W cm(-2) are achieved. After a careful optimization of the cycloaddition process, warm white devices with CIE coordinates of x = 0.36/y = 0.38 and luminances of 10 cd m(-2) are realized. Here, the mechanism of the device is explained as a host-guest system, in which the dimeric species acts as the high-energy band gap host and the low-energy bandgap TIPS-pentacene is the guest. To the best of the knowledge, this work shows the first warm white SM-LECs. Since this work is based on the archetypal TIPS-pentacene and the photoinduced cycloaddition process is well-knownfor any pentacenes, this proof-of-concept could open a new way to use these compounds for developing white lighting sources.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available