Ethanol Sensing Properties of F Doped ZnO Thin Films by Spray Pyrolysis

E.u Masumdar ,M.a Barote

doi:10.17577/ijertv9is010257

Abstract

Ethanol Sensing Properties of F Doped ZnO Thin Films by Spray Pyrolysis

Highlights

Doped ZnO films offer a promising alternative to indium tin oxide (ITO) as a transparent conducting front contact layer in CdTe/CdS solar cells
On an increase in gas concentration to 1000 ppm the surface reaction increases due to a larger surface coverage of Ethanol molecules, resulting in a rapid increase in response
On a further increase in gas concentration to 1250 ppm, the surface coverage of Ethanol molecules on the film begins to decrease which leads to a gradual decrease in response

Summary

INTRODUCTION

Doped ZnO films offer a promising alternative to indium tin oxide (ITO) as a transparent conducting front contact layer in CdTe/CdS solar cells. The substitutional doping of ZnO films with group III metals such as Al, B and Ga has been widely reported [1–5], outdiffusion of the electrically active metal dopants during subsequent cell fabrication procedures can lead to detrimental effects on device performance. It has been shown, using reactive RF sputtering, that ZnO films can instead be doped with fluorine and maintain comparable electrical and optical properties to those of the group III doped films [6-9]. Fluorine was expected to occupy the oxygen site in ZnO and promoting the conductivity of the film [15]

EXPERIMENTAL DETAILS

RESULTS

CONCLUSION