Extraction of photogenerated charge carriers by linearly increasing voltage in the case of Langevin recombination

Juska, G., Nekrasas, N., Valentinavicius, V., Meredith, P. and Pivrikas, A. (2011) Extraction of photogenerated charge carriers by linearly increasing voltage in the case of Langevin recombination. Physical Review B: Condensed Matter and Materials Physics, 84 15: 155202.1-155202.5. doi:10.1103/PhysRevB.84.155202

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ259935.pdf Full text (open access) application/pdf 309.80KB 44

Author Juska, G.
Nekrasas, N.
Valentinavicius, V.
Meredith, P.
Pivrikas, A.
Title Extraction of photogenerated charge carriers by linearly increasing voltage in the case of Langevin recombination
Journal name Physical Review B: Condensed Matter and Materials Physics   Check publisher's open access policy
ISSN 1098-0121
1550-235X
Publication date 2011-10
Sub-type Article (original research)
DOI 10.1103/PhysRevB.84.155202
Open Access Status File (Publisher version)
Volume 84
Issue 15
Start page 155202.1
End page 155202.5
Total pages 5
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2012
Language eng
Abstract Charge extraction by linearly increasing voltage (CELIV) is a powerful and widely used technique for studying charge transport physics, particularly in disordered systems such as organic semiconductors. In this article, we show that CELIV photocurrent transients are strongly dependent on experimental conditions, such as the light intensity and absorption profile. With this in mind, we introduce a universal correction factor that qualitatively extends previously derived CELIV equations, allowing carrier mobility to be estimated at various photogenerated carrier concentrations and, most importantly, photogeneration profiles. In addition, we demonstrate how the CELIV technique can be conveniently used to determine precisely the presence of Langevin bimolecular carrier recombination.
Keyword Limited Photocurrent Transients
Heterojunction Solar Cells
Transport
Methanofullerene
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2012 Collection
School of Chemistry and Molecular Biosciences
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 25 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 28 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Sun, 30 Oct 2011, 00:03:58 EST by System User on behalf of School of Mathematics & Physics