Tuning the phase transition of ZnO thin films through lithography: an integrated bottom-up and top-down processing.
J Synchrotron Radiat
; 22(1): 165-71, 2015 Jan.
Article
em En
| MEDLINE
| ID: mdl-25537604
ABSTRACT
An innovative approach towards the physico-chemical tailoring of zinc oxide thin films is reported. The films have been deposited by liquid phase using the sol-gel method and then exposed to hard X-rays, provided by a synchrotron storage ring, for lithography. The use of surfactant and chelating agents in the sol allows easy-to-pattern films made by an organic-inorganic matrix to be deposited. The exposure to hard X-rays strongly affects the nucleation and growth of crystalline ZnO, triggering the formation of two intermediate phases before obtaining a wurtzite-like structure. At the same time, X-ray lithography allows for a fast patterning of the coatings enabling microfabrication for sensing and arrays technology.
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2015
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Article