title: The synthesis of multifunctional porous honey comb-like La2O3thin film for supercapacitor and gas sensor applications.
abstract: The porous honey comb-like La2O3thin films have been synthesized using one step spray pyrolysis method. The influence of sprayed solution quantity on properties of La2O3thin films is studied using X-ray diffraction, Fourier transform spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, optical absorption and Brunauer-Emmett-Teller techniques. Morphology of La2O3electrode is controlled with sprayed solution quantity. The supercapacitive properties of La2O3thin film electrode are investigated using cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance techniques. The La2O3film electrode exhibited the specific capacitance of the 166Fg-1with 85% stability for the 3000 cycles. The La2O3film electrode exhibited sensitivity of 68 at 523K for 500ppm CO2gas concentration. The possible CO2sensing mechanism is discussed.
authors: Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416004, M.S, India.
authors: A A
authors: AA
authors: Yadav
authors: Photonic and Electronic Thin Film Laboratory, Department of Materials Science and Engineering, Chonnam National University, Gwangju 500-757, South Korea.
authors: A C
authors: AC
authors: Lokhande
authors: Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416004, M.S, India.
authors: R B
authors: RB
authors: Pujari
authors: Photonic and Electronic Thin Film Laboratory, Department of Materials Science and Engineering, Chonnam National University, Gwangju 500-757, South Korea. Electronic address: jinhyeok@chonnam.ac.kr.
authors: J H
authors: JH
authors: Kim
authors: Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416004, M.S, India. Electronic address: l_chandrakant@yahoo.com.
authors: C D
authors: CD
authors: Lokhande
keywords: Gas sensor; Honey comb-like microstructure; La(2)O(3); Supercapacitor; Thin film