Electrical conductivity and electronic structure of potassium doped PTCDA

Authors
Iwasaki, K Umishita, K Sakata, M Hino, S
Citation
K. Iwasaki et al., Electrical conductivity and electronic structure of potassium doped PTCDA, SYNTH METAL, 121(1-3), 2001, pp. 1395-1396
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
03796779 → ACNP
Volume
121
Issue
1-3
Year of publication
2001
Pages
1395 - 1396
Database
ISI
SICI code
0379-6779(20010315)121:1-3<1395:ECAESO>2.0.ZU;2-7
Abstract
Electric conductivity and ultraviolet photoelectron spectra (UPS) of potass ium doped 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) were measure d. The conductivity of potassium doped PTCDA film jumps up to 0.1 Scm(-1) f rom around 106 Scm(-1) of pristine one. Potassium doping to PTCDA also brin gs change in the upper valence band UPS; spectral onset moves closer to the Fermi level (E-F). These phenomena can be attributed to electron transfer from potassium to PTCDA, which is confirmed by MNDO molecular orbital calcu lation.