Synthesis of zinc oxide porous structures by anodization with water as an electrolyte

Shetty, Amitha and Nanda, Karuna Kar (2012) Synthesis of zinc oxide porous structures by anodization with water as an electrolyte. In: APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 109 (1). pp. 151-157.

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Abstract

We report a simple, reliable and one-step method of synthesizing ZnO porous structures at room temperature by anodization of zinc (Zn) sheet with water as an electrolyte and graphite as a counter electrode. We observed that the de-ionized (DI) water used in the experiment is slightly acidic (pH=5.8), which is due to the dissolution of carbon dioxide from the atmosphere forming carbonic acid. Porous ZnO is characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy and photoluminescence (PL) studies. The current-transient measurement is carried out using a Gamry Instruments Reference 3000 and the thickness of the deposited films is measured using a Dektak surface profilometer. The PL, Raman and X-ray photoelectron spectroscopy are used to confirm the presence of ZnO phase. We have demonstrated that the hybrid structures of ZnO and poly (3,4-ethylenedioxythiophene):poly (styrene sulfonate) (PEDOT:PSS) exhibit good rectifying characteristics. The evaluated barrier height and the ideality factor are 0.45 eV and 3.6, respectively.

Item Type:	Journal Article
Publication:	APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Publisher:	SPRINGER
Additional Information:	Copyright for this article belongs to Springer
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	07 Jan 2013 10:28
Last Modified:	07 Jan 2013 10:28
URI:	http://eprints.iisc.ac.in/id/eprint/45251

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