Effect of Thermal Annealing on Polymer Light-Emitting Diodes Utilizing Cationic Conjugated Polyelectrolytes as Electron Injection Layers
Resource
JOURNAL OF PHYSICAL CHEMISTRY C, 114(37), 15786-15790
Journal
The Journal of Physical Chemistry C
Pages
15786-15790
Date Issued
2010
Date
2010
Author(s)
Lin, Chi-Yen
Garcia, Andres
Zalar, Peter
Brzezinski, Jacek Z.
Nguyen, Thuc-Quyen
Abstract
The effect of thermal annealing on the performance of polymer light-emitting diodes (PLEDs) with a cationic conjugated polyelectrolyte as an electron injection layer is investigated. Thermal annealing at 180 °C leads to the loss of ionic content via Hofmann elimination and, hence, increases the device turn-on voltage. The ability to reduce the ionic charge density opens opportunities to design experiments for disentangling the operating mechanism for the reduction of electron injection barriers in PLEDs.
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Type
journal article
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