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Charge Generation Dynamics in CdS: P3HT Blends for Hybrid Solar Cells.
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2013 (English)In: Journal of Physical Chemistry Letters, ISSN 1948-7185, E-ISSN 1948-7185, Vol. 4, no 24, p. 4253-7Article in journal (Refereed) Published
Abstract [en]

Development of design rules for hybrid inorganic-organic solar cells through understanding charge generation and recombination dynamics is an important pathway for the improvement of solar cell conversion efficiencies. In this Letter, we study the dynamics of charge generation in CdS:polymer blends by transient absorption spectroscopy. We show that charge generation following excitation of the inorganic component is highly efficient and can occur up to a few nanoseconds after excitation, allowing for diffusion of charges within the inorganic component to an interface. In contrast, charge generation following excitation of the organic component occurs on subpicosecond time scales but suffers from two loss processes, incomplete exciton dissociation and geminate recombination.

Place, publisher, year, edition, pages
2013. Vol. 4, no 24, p. 4253-7
Keywords [en]
cadmium xanthate, electron transfer, hole transfer, photovoltaics, transient absorption spectroscopy
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-225442DOI: 10.1021/jz402382eISI: 000328920700011PubMedID: 26296174Scopus ID: 2-s2.0-84890945946OAI: oai:DiVA.org:kth-225442DiVA, id: diva2:1195413
Note

QC 20180416

Available from: 2018-04-05 Created: 2018-04-05 Last updated: 2018-04-16Bibliographically approved

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Cappel, Ute B
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