A novel study on ZnO nanostructures: coumarin effect
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Date
2012
Journal Title
Journal ISSN
Volume Title
Publisher
Taylor & Francis Ltd
Access Rights
info:eu-repo/semantics/closedAccess
Abstract
This novel study reports the behaviour of coumarin during the ZnO chemical bath deposition (CBD) process. Scanning electron microscopy studies revealed that grain sizes of the ZnO nanostructures get smaller and become more uniform in size with increasing coumarin content. Length-to-diameter ratio of the structures increased with the incorporation of coumarin. From the X-Ray diffraction results, with increasing coumarin content, significant decrease in grain sizes was determined. It was found that resistivity values of the structures increased with increasing coumarin content. This increase is attributed with a decrease in carrier concentration originated by carrier traps at the grain boundaries. Through slopes of lnR versus 1/T curves, impurity level ionization energy values were calculated as 0.16, 0.06 eV; 0.11, 0.02 eV; and 0.08, 0.06 eV for the structure growth in the solutions containing 0, 1 and 5 at.% coumarin, respectively.
Description
Keywords
coumarin, chemical bath deposition, ZnO
Journal or Series
Philosophical Magazine Letters
WoS Q Value
Q3
Scopus Q Value
Q3
Volume
92
Issue
6
