中国物理B ›› 2016, Vol. 25 ›› Issue (4): 46801-046801.doi: 10.1088/1674-1056/25/4/046801

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Optoelectronic properties of SnO2 thin films sprayed at different deposition times

Allag Abdelkrim, Saâd Rahmane, Ouahab Abdelouahab, Attouche Hafida, Kouidri Nabila   

  1. Laboratoire de Physique des Couches Minces et Applications, Université de Biskra, BP 145 RP, 07000 Biskra, Algérie
  • 收稿日期:2015-11-19 修回日期:2015-12-15 出版日期:2016-04-05 发布日期:2016-04-05
  • 通讯作者: Saâd Rahmane E-mail:rahmanesa@yahoo.fr

Optoelectronic properties of SnO2 thin films sprayed at different deposition times

Allag Abdelkrim, Saâd Rahmane, Ouahab Abdelouahab, Attouche Hafida, Kouidri Nabila   

  1. Laboratoire de Physique des Couches Minces et Applications, Université de Biskra, BP 145 RP, 07000 Biskra, Algérie
  • Received:2015-11-19 Revised:2015-12-15 Online:2016-04-05 Published:2016-04-05
  • Contact: Saâd Rahmane E-mail:rahmanesa@yahoo.fr

摘要: This article presents the elaboration of tin oxide (SnO2) thin films on glass substrates by using a home-made spray pyrolysis system. Effects of film thickness on the structural, optical, and electrical film properties are investigated. The films are characterized by several techniques such as x-ray diffraction (XRD), atomic force microscopy (AFM), ultraviolet-visible (UV-Vis) transmission, and four-probe point measurements, and the results suggest that the prepared films are uniform and well adherent to the substrates. X-ray diffraction (XRD) patterns show that SnO2 film is of polycrystal with cassiterite tetragonal crystal structure and a preferential orientation along the (110) plane. The calculated grain sizes are in a range from 32.93 nm to 56.88 nm. Optical transmittance spectra of the films show that their high transparency average transmittances are greater than 65% in the visible region. The optical gaps of SnO2 thin films are found to be in a range of 3.64 eV-3.94 eV. Figures of merit for SnO2 thin films reveal that their maximum value is about 1.15×10-4 Ω-1 at λ = 550 nm. Moreover, the measured electrical resistivity at room temperature is on the order of 10-2 Ω·cm.

关键词: thin film, SnO2}, spray pyrolysis, thickness, properties

Abstract: This article presents the elaboration of tin oxide (SnO2) thin films on glass substrates by using a home-made spray pyrolysis system. Effects of film thickness on the structural, optical, and electrical film properties are investigated. The films are characterized by several techniques such as x-ray diffraction (XRD), atomic force microscopy (AFM), ultraviolet-visible (UV-Vis) transmission, and four-probe point measurements, and the results suggest that the prepared films are uniform and well adherent to the substrates. X-ray diffraction (XRD) patterns show that SnO2 film is of polycrystal with cassiterite tetragonal crystal structure and a preferential orientation along the (110) plane. The calculated grain sizes are in a range from 32.93 nm to 56.88 nm. Optical transmittance spectra of the films show that their high transparency average transmittances are greater than 65% in the visible region. The optical gaps of SnO2 thin films are found to be in a range of 3.64 eV-3.94 eV. Figures of merit for SnO2 thin films reveal that their maximum value is about 1.15×10-4 Ω-1 at λ = 550 nm. Moreover, the measured electrical resistivity at room temperature is on the order of 10-2 Ω·cm.

Key words: thin film, SnO2}, spray pyrolysis, thickness, properties

中图分类号:  (Semiconductors)

  • 68.55.ag
68.35.bg (Semiconductors) 81.05.Bx (Metals, semimetals, and alloys)