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Enhanced Photoresponse of Inkjet-Printed ZnO Thin Films Capped with CdS Nanoparticles
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
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2010 (English)In: JOURNAL OF PHYSICAL CHEMISTRY LETTERS, ISSN 1948-7185, Vol. 1, no 1, 89-92 p.Article in journal (Refereed) Published
Abstract [en]

Composite semiconductors provide routes for realizing high-performance electronic devices, but for many applications of such devices, low-cost manufacturing techniques are desirable. We have engineered a 3 orders of magnitude enhancement of the ultraviolet photoresponse of ZnO thin films, fabricated "in situ" by drop-on-demand inkjet printing, and then capped with CdS nanoparticles by dip. coating. As a consequence, the decay time of the photoresponse is. reduced to about 4 ms. Thus, capping with CdS not only suppresses the detrimental passivation layer of ZnO thin films, but also generates an interfacial carrier transport layer to reduce the probability of carrier recombination.

Place, publisher, year, edition, pages
2010. Vol. 1, no 1, 89-92 p.
National Category
Engineering and Technology
Research subject
Engineering Science with specialization in Solid State Physics
URN: urn:nbn:se:uu:diva-139512DOI: 10.1021/jz900008yISI: 000276905600020OAI: oai:DiVA.org:uu-139512DiVA: diva2:381473
Available from: 2010-12-27 Created: 2010-12-27 Last updated: 2014-12-10Bibliographically approved

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