| Jahr | 2013 |
| Autor(en) | Tobias Glaser, Sebastian Beck, Bernd Lunkenheimer, Daniela Donhauser, Andreas Köhn, Michael Kröger, Annemarie Pucci |
| Titel | Infrared study of the MoO3 doping efficiency in 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP) |
| KIP-Nummer | HD-KIP 13-06 |
| KIP-Gruppe(n) | F6 |
| Dokumentart | Paper |
| Keywords (angezeigt) | Electrochemical doping; Doping efficiency; Charge transfer; Charge dissociation; Agglomeration; Infrared spectroscopy |
| Quelle | Organic Electronics 14 (2013) 575-583 |
| doi | http://dx.doi.org/10.1016/j.orgel.2012.11.031 |
| Abstract (en) | Electrochemical doping produces clear changes in the vibrational spectra of organic semiconductors as we show here for the system molybdenum oxide (MoO3) doped into the charge transport material 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP). Based on density functional theory (DFT) calculations of vibrational spectra, the new spectral features can be attributed to the CBP cation that forms as a result of electron transfer from CBP to MoO3. The intensity of the new vibrational lines is a direct measure for the probability of charge transfer. MoO3 agglomerating within the CBP matrix limits the active interface area between the two species. The appearance of a broad electronic transition in the infrared range indicates a new electronic structure at the interface compared to the individual components. The intensity of this electronic excitation serves as a measure for the interface area indicating a linear increase with MoO3 concentration. Deposition onto cooled substrates results in smaller agglomerates, and thus yields a higher efficiency. |
| bibtex | @article{Glaser2013,
author = {Glaser, Tobias and Beck, Sebastian and Lunkenheimer, Bernd and Donhauser, Daniela and K\"{o}hn, Andreas and Kr\"{o}ger, Michael and Pucci, Annemarie},
title = {Infrared study of the {Mo}{O}$_3$ doping efficiency in 4,4'-bis({N}-carbazolyl)-1,1'-biphenyl ({CBP})},
journal = {Organic Electronics},
year = {2013},
volume = {14},
number = {2},
pages = {575 - 583},
doi = {10.1016/j.orgel.2012.11.031},
url = {http://www.sciencedirect.com/science/article/pii/S1566119912005472}
} |
| URL | http://www.sciencedirect.com/science/article/pii/S1566119912005472 |
