Sökning: onr:"swepub:oai:DiVA.org:liu-71375" >
Spontaneous Charge ...
Spontaneous Charge Transfer and Dipole Formation at the Interface Between P3HT and PCBM
-
- Aarnio, Harri (författare)
- Abo Akad University
-
- Sehati, Parisa (författare)
- Linköpings universitet,Tekniska högskolan,Ytors Fysik och Kemi
-
- Braun, Slawomir (författare)
- Linköpings universitet,Ytors Fysik och Kemi,Tekniska högskolan
-
visa fler...
-
- Nyman, Mathias (författare)
- Abo Akad University
-
- de Jong, Michel P (författare)
- University of Twente
-
- Fahlman, Mats (författare)
- Linköpings universitet,Ytors Fysik och Kemi,Tekniska högskolan
-
- Osterbacka, Ronald (författare)
- Abo Akad University
-
visa färre...
-
(creator_code:org_t)
- 2011-06-17
- 2011
- Engelska.
-
Ingår i: Advanced Energy Materials. - : Wiley-VCH Verlag Berlin. - 1614-6832 .- 1614-6840. ; 1:5, s. 792-797
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- In the pursuit of developing new materials for more efficient bulk-heterojunction solar cells, the blend poly (3-hexylthiophene):[ 6,6]-phenyl-C(61)-butyric acid methyl ester (P3HT:PCBM) serves as an important model system. The success of the P3HT: PCBM blend comes from efficient charge generation and transport with low recombination. There is not, however, a good microscopic picture of what causes these, hindering the development of new material systems. In this report UV photoelectron spectroscopy measurements on both regiorandom-(rra) and regioregular-(rr) P3HT are presented, and the results are interpreted using the Integer Charge Transfer model. The results suggest that spontaneous charge transfer from P3HT to PCBM occurs after heat treatment of P3HT: PCBM blends. The resulting formation of an interfacial dipole creates an extra barrier at the interface explaining the reduced (non-)geminate recombination with increased charge generation in heat treated rr-P3HT: PCBM blends. Extensive photoinduced absorption measurements using both above-and below-bandgap excitation light are presented, in good agreement with the suggested dipole formation.
Nyckelord
- TECHNOLOGY
- TEKNIKVETENSKAP
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas