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Recombination studi...
Recombination studies in a polyfluorene copolymer for photovoltaic applications
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Aarnio, Harri (author)
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Westerling, Markus (author)
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Oesterbacka, Ronald (author)
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Svensson, Mattias, 1982 (author)
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- Andersson, Mats, 1966 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Pascher, Torbjörn (author)
- Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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Pan, Jinxi (author)
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- Sundström, Villy (author)
- Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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Stubb, Henrik (author)
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(creator_code:org_t)
- Elsevier BV, 2005
- 2005
- English.
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In: Synthetic Metals. - : Elsevier BV. - 0379-6779. ; 155:2, s. 299-302
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http://dx.doi.org/10...
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Abstract
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- We present detailed continuous wave (cw) and transient photoinduced absorption (PA) measurements in thin films of a novel alternating polyfluorene copolymer, poly[2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3-benzo-thiadiazole)] (DiO-PFDTBT), and its blends with the sol. fullerene deriv. [6,6]-phenyl-C61-butyric acid Me ester (PCBM) in wt. ratios of 1:0, 4:1 and 1:4. We measure the frequency, intensity and temp. dependence of the PA signal in the frequency domain, and compare with the results obtained from the transient PA decay measurements in the time domain. In all blends, the PA spectrum shows a broad high energy PA band ranging from .apprx.1 eV to 2 eV as well as a low energy band peaking at .apprx.0.35 eV. We attribute the low energy band to the P1 transition of polarons and part of the high energy band to the correlated P2 transition of polarons. Both frequency and time domain measurements show that the high energy band has two decay components, a faster component in the microsecond time regime and a slower component in the millisecond time regime. The slow component is strongly dispersive, whereas the fast component is practically non-dispersive. [on SciFinder (R)]
Subject headings
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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- art (subject category)
- ref (subject category)
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- By the author/editor
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Aarnio, Harri
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Westerling, Mark ...
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Oesterbacka, Ron ...
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Svensson, Mattia ...
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Andersson, Mats, ...
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Pascher, Torbjör ...
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show more...
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Pan, Jinxi
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Sundström, Villy
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Stubb, Henrik
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Other Chemistry ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
- Articles in the publication
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Synthetic Metals
- By the university
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Chalmers University of Technology
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Lund University