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PbS/CdS Core/Shell Nanocrystals For Solution-Processed Colloidal Quantum Dot Solar Cells

Published online by Cambridge University Press:  30 December 2014

Darren C. J. Neo ,
Cheng Cheng ,
Hazel E. Assender  and
Andrew A. R. Watt
Darren C. J. Neo
Affiliation:
Department of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, United Kingdom.
Cheng Cheng
Affiliation:
Department of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, United Kingdom.
Hazel E. Assender
Affiliation:
Department of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, United Kingdom.
Andrew A. R. Watt
Affiliation:
Department of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, United Kingdom.
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Abstract

An epitaxial shell of cadmium sulphide is grown on lead sulphide quantum dots in order to reduce the concentration of surface defects. Thin solid films of these core/shell materials are found to have low carrier concentrations due to effective surface passivation which reduces the number of dangling bonds. In this paper PbS/CdS is used as a quasi-intrinsic layer in p-i-n photovoltaic devices where PbS acts as the p-layer and ZnO the n-layer. By studying different permutations of these layers and the degree of PbS p-type doping by annealing we optimise fill factor and open-circuit voltage.

Keywords

core/shellphotovoltaicPb
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1748: Symposium II – Semiconductor Nanocrystals, Plasmonic Metal Nanoparticles, and Metal-Hybrid Structures , 2015 , mrsf14-1748-ii05-31
Copyright
Copyright © Materials Research Society 2014 

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References

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