Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 29, Pages 11010-11013Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja201868d
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Funding
- Air Force Research Laboratory [AFOSR/FA9550-08-1-0248]
- Camille Dreyfus Teacher-Scholar Award
- Department of Energy Office of Basic Energy Sciences [DE-SC0002368]
- NSF [DMR 0547639]
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Introduction of a DNA interlayer adjacent to an Al cathode in a polymer light-emitting diode leads to lower turn-on voltages, higher luminance efficiencies, and characteristics comparable to those observed using a Ba electrode. The DNA serves to improve electron injection and also functions as a hole-blocking layer. The temporal characteristics of the devices are consistent with an interfacial dipole layer adjacent to the electrode being responsible for the reduction of the electron injection barrier.
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