Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 21, Issue 19, Pages 3667-3672Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201100682
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Funding
- National Science Foundation [DMR-1035480]
- Department of Energy (BES) [DE-SC0002368]
- Air Force Office of Scientific Research
- Direct For Mathematical & Physical Scien [1035480, 1005546] Funding Source: National Science Foundation
- Division Of Materials Research [1005546, 1035480] Funding Source: National Science Foundation
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Improved performance of p-type organic light-emitting transistors (OLETs) is demonstrated by introducing a conjugated polyelectrolyte (CPE) layer and symmetric high work function (WF) source and drain metal electrodes. The OLET comprises a tri-layer film consisting of a hole transporting layer, an emissive layer, and a CPE layer as an electron injection layer. The thickness of the CPE layer is critical for achieving good performance and provides an important structural handle for consideration in future optimization studies. We also demonstrate for the first time, good performance solution-processed blue-emitting OLETs. These results further demonstrate the simplification of device fabrication and improved performance afforded by integrating CPE interlayers into organic optoelectronic devices.
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