TY - JOUR
T1 - Nd3+ Doping effect on the optical and electrical properties of SnO2 thin films prepared by nebulizer spray pyrolysis for opto-electronic application
AU - Arun Kumar, K. Deva
AU - Valanarasu, S.
AU - Kathalingam, A.
AU - Jeyadheepan, K.
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/5
Y1 - 2018/5
N2 - Neodymium doped tin oxide (Nd: SnO2) thin films were deposited on heated glass substrates with different Nd concentrations (0, 2, 4 and 6 %) by nebulizer spray pyrolysis method. Effects of Nd doping on structural, optical and electrical properties of the prepared films were investigated. X-ray diffraction study confirmed that all the deposited Nd: SnO2 films are in polycrystalline tetragonal structure with (211) preferential orientation. FESEM images showed that the prepared SnO2 particles are in nano-size in spherical shape, completely covering the substrate. AFM topology showed smooth deposition of the films with minimum surface roughness. The films showed maximum optical transmittance 90 % in the visible region with a band gap value 3.67 eV, also showed low refractive index and extinction coefficients. Room temperature photoluminescence (PL) spectrum exhibited a strong UV emission peak at 356 nm for all the films. All the Nd: SnO2 films displayed n-type conductivity with low electrical resistivity 5.88 × 10−4 (Ω cm) for 4 % Nd doping. As the films showed good figure of merit (ϕ) values, these Nd doped SnO2 thin films can perform better role in optoelectronic device.
AB - Neodymium doped tin oxide (Nd: SnO2) thin films were deposited on heated glass substrates with different Nd concentrations (0, 2, 4 and 6 %) by nebulizer spray pyrolysis method. Effects of Nd doping on structural, optical and electrical properties of the prepared films were investigated. X-ray diffraction study confirmed that all the deposited Nd: SnO2 films are in polycrystalline tetragonal structure with (211) preferential orientation. FESEM images showed that the prepared SnO2 particles are in nano-size in spherical shape, completely covering the substrate. AFM topology showed smooth deposition of the films with minimum surface roughness. The films showed maximum optical transmittance 90 % in the visible region with a band gap value 3.67 eV, also showed low refractive index and extinction coefficients. Room temperature photoluminescence (PL) spectrum exhibited a strong UV emission peak at 356 nm for all the films. All the Nd: SnO2 films displayed n-type conductivity with low electrical resistivity 5.88 × 10−4 (Ω cm) for 4 % Nd doping. As the films showed good figure of merit (ϕ) values, these Nd doped SnO2 thin films can perform better role in optoelectronic device.
KW - Nebulized spray pyrolysis
KW - Neodymium doped tin oxide
KW - Opto-electronic application
KW - Thin films
UR - http://www.scopus.com/inward/record.url?scp=85041460731&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2018.01.050
DO - 10.1016/j.materresbull.2018.01.050
M3 - Article
AN - SCOPUS:85041460731
SN - 0025-5408
VL - 101
SP - 264
EP - 271
JO - Materials Research Bulletin
JF - Materials Research Bulletin
ER -