Investigation of the effect of donor-acceptor substitution on band gap, band width, and conductivity
| dc.citation.epage | 216 | en_US |
| dc.citation.issueNumber | 1-3 | en_US |
| dc.citation.spage | 215 | en_US |
| dc.citation.volumeNumber | 119 | en_US |
| dc.contributor.author | Salzner, U. | en_US |
| dc.date.accessioned | 2016-02-08T10:35:42Z | |
| dc.date.available | 2016-02-08T10:35:42Z | |
| dc.date.issued | 2001 | en_US |
| dc.department | Department of Chemistry | en_US |
| dc.description.abstract | Polymers of two donor-acceptor systems, 3-cyano,3′-hydroxybithiophene 1 and 4-dicyanomethylene-4H-cyclopenta[2,1-b:3,4-b′],3,4-ethylenedioxythiophene (CDM-EDOT) 2, were analyzed with density functional theory. As predicted by perturbation theory, interactions between donors and acceptors with very different energy levels are greatly reduced compared to those between fragments with similar energy levels. This leads to localized states and bands with little dispersion. For poly-1 these localized states lie below the valence band and above the conduction band. For 2 localized unoccupied levels lie within the band gap. These acceptor levels account for the high electron affinity of poly-2 and allow for self-doping. Self doping explains the increased intrinsic conductivity of poly-2, the localized nature of the low lying MOs rationalizes the low mobility of n-type carriers in poly-2. | en_US |
| dc.identifier.doi | 10.1016/S0379-6779(00)01411-9 | en_US |
| dc.identifier.issn | 0379-6779 | |
| dc.identifier.uri | http://hdl.handle.net/11693/24883 | |
| dc.language.iso | English | en_US |
| dc.publisher | Elsevier | en_US |
| dc.relation.isversionof | http://dx.doi.org/10.1016/S0379-6779(00)01411-9 | en_US |
| dc.source.title | Synthetic Metals | en_US |
| dc.subject | Band gap | en_US |
| dc.subject | Band width | en_US |
| dc.subject | Conductivity | en_US |
| dc.subject | Density functional calculations | en_US |
| dc.subject | Donor-acceptor concept | en_US |
| dc.subject | Carrier mobility | en_US |
| dc.subject | Doping (additives) | en_US |
| dc.subject | Electric conductivity of solids | en_US |
| dc.title | Investigation of the effect of donor-acceptor substitution on band gap, band width, and conductivity | en_US |
| dc.type | Article | en_US |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- Investigation of the effect of donor-acceptor substitution on band gap, band width, and conductivity.pdf
- Size:
- 473.46 KB
- Format:
- Adobe Portable Document Format
- Description:
- Full printable version