Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4736579
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Funding
- Austrian Science Foundation FWF within the National Research Network NFN on Interface Controlled and Functionalized Organic Films [S09711-N08, S09712-N08]
- city of Linz
- Land Oberosterreich
- Romanian Ministry of Labour, Family and Social Protection [POSDRU/88/1.5/S/60203]
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Quinacridone is a five-ring hydrogen-bonded molecule analogous in structure and size to the well-known organic semiconductor pentacene. Unlike pentacene, quinacridone has limited intramolecular pi-conjugation and becomes highly colored in the solid state due to strong intermolecular electronic coupling. We found that quinacridone shows a field-effect mobility of 0.1 cm(2)/V.s, comparable to mobilities of pentacene in similarly prepared devices. Photoinduced charge generation in single-layer quinacridone metal-insulator-metal diodes is more than a hundred times more efficient than in pentacene devices. Photoinduced charge transfer from quinacridone to C-60 is not effective, as evidenced by measurements in heterojunctions with C-60. Hydrogen-bonded organic solids may provide new avenues for organic semiconductor design. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4736579]
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