Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 41, 2014
Previous Article Next Article

Effects of ultraviolet soaking on surface electronic structures of solution processed ZnO nanoparticle films in polymer solar cells

Author affiliations

Abstract

We systematically show the effect of UV-light soaking on surface electronic structures and chemical states of solution processed ZnO nanoparticle (ZnONP) films in UHV, dry air and UV–ozone. UV exposure in UHV induces a slight decrease in work function and surface-desorption of chemisorbed oxygen, whereas UV exposure in the presence of oxygen causes an increase in work function due to oxygen atom vacancy filling in the ZnO matrix. We demonstrate that UV-light soaking in combination with vacuum or oxygen can tune the work function of the ZnONP films over a range exceeding 1 eV. Based on photovoltaic performance and diode measurements, we conclude that the oxygen atom vacancy filling occurs mainly at the surface of the ZnONP films and that the films consequently retain their n-type behavior despite a significant increase in the measured work function.

Graphical abstract: Effects of ultraviolet soaking on surface electronic structures of solution processed ZnO nanoparticle films in polymer solar cells

Back to tab navigation

Supplementary files

Article information


Submitted
29 May 2014
Accepted
02 Sep 2014
First published
03 Sep 2014

J. Mater. Chem. A, 2014,2, 17676-17682
Article type
Paper
Author version available

Effects of ultraviolet soaking on surface electronic structures of solution processed ZnO nanoparticle films in polymer solar cells

Q. Bao, X. Liu, Y. Xia, F. Gao, L. Kauffmann, O. Margeat, J. Ackermann and M. Fahlman, J. Mater. Chem. A, 2014, 2, 17676
DOI: 10.1039/C4TA02695K

Social activity

Search articles by author

Spotlight

Advertisements