The impact of low 6,13-pentacenequinone concentration on pentacene thin film growth

Autor: Jürgen P. Rabe, Ricarda Opitz, Steffen Duhm, Norbert Koch, Ingo Salzmann
Jazyk: angličtina
Rok vydání: 2007
Předmět:
Zdroj: Applied physics letters 91, 051919 (2007). doi:10.1063/1.2767972
DOI: 10.1063/1.2767972
Popis: Thin films of pentacene (P) have been vacuum codeposited on SiO2 with low concentrations of 6,13-pentacenequinone (PQ) in order to investigate the impact on the pentacene thin film structure. Within a range of 2%–20% PQ concentration no intercalation of the compounds can be observed by means of x-ray diffraction and infrared absorption spectroscopy. The crystalline quality of the P films stays unchanged by the presence of PQ, whereas P bulk phase contributions are being suppressed at PQ concentrations ⩾5%, which could be confirmed by means of atomic force microscopy. From the results the authors suggest phase-separated PQ growth as well as PQ nucleation at P grain boundaries.
Databáze: OpenAIRE