Record number :
1000079
Title of article :
Spray pyrolytic deposition and characterization of lanthanum selenide (La2Se3) thin films
Author/Authors :
G.D Bagde، نويسنده , , S.D Sartale، نويسنده , , C.D. Lokhande، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
9
From page :
27
To page :
35
Abstract :
The versatile spray pyrolysis technique was employed to prepare thin films of lanthanum selenide (La2Se3) on glass and fluorine doped tin oxide (FTO) coated glass substrates under optimized conditions. The deposition temperature was 250 °C. The X-ray studies reveal that the films are polycrystalline with single La2Se3 phase. The estimated optical band gap was found to be 2.6 eV. The dielectric properties such as dielectric constant and dielectric loss of the films deposited on FTO coated glass substrates were measured with FTO-La2Se3-Ag structure as a function of frequency and the results are reported. At room temperature dielectric constant and dielectric loss for 1 kHz frequency were found to be 6.2 and 0.048, respectively. The room temperature electrical resistivity was of the order of 105 Ω cm. The La2Se3 films are found to be n-type semiconductor.
Keywords :
Spray pyrolysis , Lanthanum selenide (La2Se3) thin films , crystal structure , Surface morphology , Electric and dielectric properties
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science
Serial Year :
2003
Link To Document :
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