TY - JOUR
T1 - IV-VI Nanocrystal-Polymer Solar Cells
AU - Fritz, Karolina P.
AU - Guenes, Serap
AU - Luther, Joseph
AU - Kumar, Sandeep
AU - Sariciftci, N. Serdar
AU - Scholes, Gregory D.
PY - 2008
Y1 - 2008
N2 - Processes are investigated for the fabrication of hybrid bilayer photovoltaic (PV) devices consisting of IV-VI nanocrystals (NCs) having near-infrared optical gaps and an organic conductive polymer. Our design utilizes PbS NCs spin-cast onto an indium tin oxide (ITO) coated glass slide, covered with a poly(3-hexylthiophene-2,5-diyl) (P3HT) layer. We demonstrate here that the removal of the surface ligand, by pre-rinsing the NCs and subsequent annealing, generates a smoother film with a greater degree of cross-linking between the NCs. Additionally, a post-production treatment enhances the interfacial layer and improves charge carrier separation and mobility, rendering better performing solar cells. Further, results using PbSe NCs indicate the method can be adapted to similar systems. The method proposed here was designed to optimize more independently the polymer and nanocrystal components of the device and, to an extent, the interface between them.
AB - Processes are investigated for the fabrication of hybrid bilayer photovoltaic (PV) devices consisting of IV-VI nanocrystals (NCs) having near-infrared optical gaps and an organic conductive polymer. Our design utilizes PbS NCs spin-cast onto an indium tin oxide (ITO) coated glass slide, covered with a poly(3-hexylthiophene-2,5-diyl) (P3HT) layer. We demonstrate here that the removal of the surface ligand, by pre-rinsing the NCs and subsequent annealing, generates a smoother film with a greater degree of cross-linking between the NCs. Additionally, a post-production treatment enhances the interfacial layer and improves charge carrier separation and mobility, rendering better performing solar cells. Further, results using PbSe NCs indicate the method can be adapted to similar systems. The method proposed here was designed to optimize more independently the polymer and nanocrystal components of the device and, to an extent, the interface between them.
KW - Nanocrystals
KW - Near-infrared
KW - PbS
KW - Photovoltaic devices
KW - Solar cells
UR - http://www.scopus.com/inward/record.url?scp=39149119613&partnerID=8YFLogxK
U2 - 10.1016/j.jphotochem.2007.09.004
DO - 10.1016/j.jphotochem.2007.09.004
M3 - Article
AN - SCOPUS:39149119613
SN - 1010-6030
VL - 195
SP - 39
EP - 46
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
IS - 1
ER -