Charge separation dynamics in a narrow band gap polymer-PbS nanocrystal blend for efficient hybrid solar cells
Journal article, 2012

We have demonstrated efficient hybrid solar cells based on lead sulfide (PbS) nanocrystals and a narrow band gap polymer, poly[{2,5-bis(2-hexyldecyl)-2,3,5,6-tetrahydro-3,6-dioxopyrrolo[3,4-c]py rrole-1,4-diyl}-alt-{[2,2'-(1,4-phenylene)bis-thiophene]-5,5'-diyl}], (PDPPTPT). An opportune mixing of the two materials led to the formation of an energetically favorable bulk hetero-junction with a broad spectral response. Using a basic device structure, we reached a power conversion efficiency of similar to 3%, which is one of the highest values reported for this class of solar cells. Photo-physical measurements carried out on the device provided insights into the working mechanism: the comparison between the time decay of the pristine polymer and the polymer PbS blend allows us to conclude that efficient charge transfer is taking place in this hybrid system.


quantum-dot photovoltaics





C. Piliego

University of Groningen

M. Manca

University of Groningen

Renee Kroon

Chalmers, Chemical and Biological Engineering, Polymer Technology

M. Yarema

Johannes Kepler University of Linz (JKU)

K. Szendrei

University of Groningen

Mats Andersson

Chalmers, Chemical and Biological Engineering, Polymer Technology

W. Heiss

Johannes Kepler University of Linz (JKU)

M. A. Loi

University of Groningen

Journal of Materials Chemistry

0959-9428 (ISSN) 1364-5501 (eISSN)

Vol. 22 46 24411-24416

Subject Categories

Chemical Sciences



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