A flexible organic active matrix circuit fabricated using novel organic thin film transistors and organic light-emitting diodes

Citation data:

Semiconductor Science and Technology, ISSN: 0268-1242, Vol: 25, Issue: 11

Publication Year:
2010
Usage 158
Abstract Views 158
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Citations 8
Citation Indexes 8
Repository URL:
http://hdl.handle.net/10754/561579
DOI:
10.1088/0268-1242/25/11/115001
Author(s):
Gutiérrez-Heredia, Gerardo; González, Luis A.; Alshareef, Husam N.; Gnade, Bruce E.; Quevedo-López, Manuel Angel Quevedo
Publisher(s):
IOP Publishing
Tags:
Engineering; Materials Science; Physics and Astronomy
article description
We present an active matrix circuit fabricated on plastic (polyethylene naphthalene, PEN) and glass substrates using organic thin film transistors and organic capacitors to control organic light-emitting diodes (OLEDs). The basic circuit is fabricated using two pentacene-based transistors and a capacitor using a novel aluminum oxide/parylene stack (AlO/ parylene) as the dielectric for both the transistor and the capacitor. We report that our circuit can deliver up to 15 μA to each OLED pixel. To achieve 200 cd m of brightness a 10 μA current is needed; therefore, our approach can initially deliver 1.5× the required current to drive a single pixel. In contrast to parylene-only devices, the AlO /parylene stack does not fail after stressing at a field of 1.7 MV cm for >10 000 s, whereas 'parylene only' devices show breakdown at approximately 1000 s. Details of the integration scheme are presented. © 2010 IOP Publishing Ltd.