Energy level alignment of a hole-transport organic layer and ITO: Towards applications for organic electronic devices
- Arnoux, Quentin
- Boucly, Anthony
- Barth, Vincent
- Benbalagh, Rabah
- Cossaro, Albano
- Floreano, Luca
- Silly, Mathieu, G
- Sirotti, Fausto
- Derat, Etienne
- Carniato, Stephane
- Bournel, Fabrice
- Gallet, Jean-Jacques, G
- Fichou, Denis
- Tortech, Ludovic
- Rochet, Francois
Publication date
August 2017
DOI Publisher
Washington, D.C. : American Chemical SocietyAbstract
International audience2,2’,6,6’-tetraphenyl-4,4’-dipyranylidene (DIPO-Ph4) was grown by vacuum-deposition on an indium tin oxide (ITO) substrate. The films were characterized by atomic force microscopy and synchrotron radiation UV and X-ray photoelectron spectroscopy to gain an insight into the material growth and to better understand the electronic properties of the DIPO-Ph4/ITO interface. Results show formation of cationic DIPO-Ph4 at ITO interface with a charge transfer from the organic layer to the anode material. This has been confronted to DFT calculations. We present as a conclusion the energetic diagram of the DIPO-Ph4/ITO system and some perspectives with a typical photovoltaic active layer: P3HT:PCBM
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