Abstract
Scanning tunneling spectroscopy (STS) has been used to determine the band structure of polypyrrole. The polypyrrole films were electropolymerized onto a highly oriented pyrolytic graphite surface using a rotating disk electrode. Differential conductance spectra measurements allowed us to follow the evolution of the band gap as a function of doping level. Before and after the STS measurements, the film structure was imaged by scanning tunneling microscopy. The STS results agree with data obtained by inverse photoemission spectroscopy.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1428-1430 |
| Number of pages | 3 |
| Journal | Journal of physical chemistry |
| Volume | 96 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1992 |