LIU Lei, MA Ming-jie, LIU Dan-dan etc. Influence of Rapid Thermal Annealing on The Structural and Optical Properties of Pulsed Laser Deposited SnS Thin Films[J]. Chinese Journal of Luminescence, 2015,36(7): 811-820
LIU Lei, MA Ming-jie, LIU Dan-dan etc. Influence of Rapid Thermal Annealing on The Structural and Optical Properties of Pulsed Laser Deposited SnS Thin Films[J]. Chinese Journal of Luminescence, 2015,36(7): 811-820 DOI: 10.3788/fgxb20153607.0811.
Influence of Rapid Thermal Annealing on The Structural and Optical Properties of Pulsed Laser Deposited SnS Thin Films
SnS thin films were grown by pulsed laser deposition on glass substrates at room temperature
and then the deposited films were rapidly annealed at 200
300
400
500
600 ℃ under flowing argon atmosphere. The effects of rapid thermal annealing(RTA) temperature on the microstructural
morphological
optical properties and electrical properties of SnS thin films were studied by X-ray diffraction(XRD)
laser Raman spectrometry(Raman)
atomic force microscopy(AFM)
field emission scanning electron microscopy (FESEM)
ultraviolet-visible-near infrared spectrophotometer (UV-Vis-NIR) and Keithley 4200-SCS semiconductor parameter analyzer. The results show that SnS thin films grow preferentially oriented in the (111) direction
and the crystalline quality of SnS thin films is the best at 400 ℃. Raman characteristic peaks of SnS appear in Raman spectra of the thin films. While the increasing of the annealing temperature
the thickness of the films gradually decrease whereas the average particle sizes of the films increase. The absorption coefficient in the visible region is in the order of 10
5
cm
-1
at different thermal annealing temperature. The direct bandgap of the film is 1.92 eV at 400 ℃. With the increasing of the thermal annealing temperature from 300 to 500 ℃
the resistivity of the films decreases from 1.85×10
4
to 14.97 Ω·cm.
关键词
Keywords
references
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