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Issue 41, 2015
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Size and bandgap tunability in Bi2S3 colloidal nanocrystals and its effect in solution processed solar cells

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Abstract

We report the synthesis and full characterization of colloidal Bi2S3 nanocrystals with different sizes, showing a band gap variation up to 0.2 eV and pointing to quantum confinement effects. Polymer–nanocrystal solar cells have been fabricated to study the effect of the size and band gap change on the performance of the devices. We have found that smaller nanocrystals present a much higher Voc, pointing to a system with a reduced density of surface traps.

Graphical abstract: Size and bandgap tunability in Bi2S3 colloidal nanocrystals and its effect in solution processed solar cells

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Supplementary files

Article information


Submitted
17 Jun 2015
Accepted
27 Aug 2015
First published
31 Aug 2015

J. Mater. Chem. A, 2015,3, 20642-20648
Article type
Paper
Author version available

Size and bandgap tunability in Bi2S3 colloidal nanocrystals and its effect in solution processed solar cells

M. Bernechea, Y. Cao and G. Konstantatos, J. Mater. Chem. A, 2015, 3, 20642
DOI: 10.1039/C5TA04441C

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