Charge separation dynamics in a narrow band gap polymer-PbS nanocrystal blend for efficient hybrid solar cells
Artikel i vetenskaplig tidskrift, 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.

performance

quantum-dot photovoltaics

air

confinement

thin-films

Författare

C. Piliego

Rijksuniversiteit Groningen

M. Manca

Rijksuniversiteit Groningen

Renee Kroon

Chalmers, Kemi- och bioteknik, Polymerteknologi

M. Yarema

Johannes Kepler Universität Linz (JKU)

K. Szendrei

Rijksuniversiteit Groningen

Mats Andersson

Chalmers, Kemi- och bioteknik, Polymerteknologi

W. Heiss

Johannes Kepler Universität Linz (JKU)

M. A. Loi

Rijksuniversiteit Groningen

Journal of Materials Chemistry

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

Vol. 22 46 24411-24416

Ämneskategorier

Kemi

DOI

10.1039/c2jm34034h