PHOTOELECTRIC AND PHOTOMAGNETIC RESPONSE OF INDIUM-TIN OXIDE FILMS

Meshkovsky Igor K., Plyastsov Semyon A

2015 , VOLUME 15, NUMBER 6 ( November-December )

ISSN 2226-1494 (print), ISSN 2500-0373 (online)

Publications

Editor-in-Chief

Nikiforov
Vladimir O.
D.Sc., Prof.

Partners

doi: 10.17586/2226-1494-2015-15-6-969-975

PHOTOELECTRIC AND PHOTOMAGNETIC RESPONSE OF INDIUM-TIN OXIDE FILMS

I. K. Meshkovsky, S. A. Plyastsov

Read the full article

Article in Russian

For citation: Meshkovskiy I.K., Plyastsov S.A. Photoelectric and photomagnetic response of indium-tin oxide films. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2015, vol. 15, no. 6, pp. 969–975.

Abstract

Subject of Research. The goal of the present research is investigation of photoelectric and photomagnetic response of ITO (indium-tin oxide) films under UV laser irradiation. Method. The ITO films were prepared by magnetron sputtering with the thickness equal to 300nm. The films were irradiated by UV laser light with 248 nm wavelength in laser pulse energy range from 10 mJ to 150 mJ by KrF excimer laser. Metallic electrodes were deposited on the films. Information about the films surface topography was obtained by atomic force microscopy and scanning electron microscopy. The film structure was investigated by X-ray diffraction. Main Results. It was shown that voltage appears between metallic contacts under the UV light effect. The electric current was observed through resistive load. The anisotropy of electric field producing photoelectric response was demonstrated for the first time. The appearance of magnetic field under the laser light irradiation was observed for the first time. The dependence of the response voltage on the laser pulse energy was linear over the whole measured energy range. The following physical mechanism was proposed for description of the observed phenomenon: electric voltage is associated with non-uniform distribution of the average crystallite size along the film surface, and, therefore, with mean free path of the charge carriers along the film surface. Photomagnetic response could be associated with collective behavior of the large number of charged particles, created due to high intensity laser irradiation. Practical Relevance. The phenomenon being studied could be applied for creation of new optoelectronic devices, for example, modulators, optical detectors, etc. Particularly, due to linear dependence of photoelectric response on the laser pulse energy, this phenomenon is attractive for manufacturing of simple and cheap excimer laser pulse energy detectors.

Keywords: ITO films, indium-tin oxide, anomalous photovoltaic effect, photomagnetic response

Acknowledgements. The authors express their gratitude to the Research Production Company “Polytekh” for fabrication of the ITO films for research. The authors thank Alexey Makhin for information about the deposition technology and fruitful discussion. Research was performed by the equipment of Shared Use Center «Material science and diagnostics for modern technologies» and supported by the Ministry of Science and Education of the Russian Federation (Grant № 14.621.21.0007 id RFMEFI62114X0007)

References

1. Pensak L. High-voltage photovoltaic effect. Physical Review, 1958, vol. 109, no. 2, p. 601. doi: 10.1103/PhysRev.109.601
2. Gondal M.A., Durrani S.M.A., Khawaja E.E. Laser pulse photodetectors based on Sn-dopes indium oxide films. European Physical Journal - Applied Physics, 1999, vol. 8, pp. 37–42. doi: 10.1051/epjap:1999227
3. Kato N., Motohiro T., Ichikawa T., Ito H., Hioki T., Noda S. All-optical modulation with anomalous photovoltaic film on a Ti:LiNbO3 waveguide modulator. Applied Optics, 1997, vol. 36, no. 30, pp. 7870–7875. doi: 10.1364/AO.36.007870
4. Onishi H., Kurokawa S., Ieyasu K. Photovoltaic polarity of CdTe films obliquely deposited in vacuum. Journal of Applied Physics, 1974, vol. 45, no. 7, pp. 3205–3206. doi: 10.1063/1.1663752
5. Sharma S.K., Srivastava R.S. Study of anomalous photovoltaic effect in vacuum deposited wedge shaped CdTe films. Journal of Applied Physics, 1987, vol. 62, no. 3, pp. 907–911. doi: 10.1063/1.339698
6. Kallmann H., Spruch G.M., Trester S. Photovoltages larger than band-gap in thin films of germanium. Journal of Applied Physics, 1972, vol. 43, no. 2, pp. 469–475. doi: 10.1063/1.1661142
7. von Gutfeld R.J., Tynan E.E. Temperature dependence of transverse planar voltages in laser irradiated Pt and Pd films. Applied Physics Letters, 1975, vol. 26, no. 12, pp. 680–682. doi: 10.1063/1.88034
8. Olivei А. Voltage generation by laser pulses in thin films. Journal of Physics D: Applied Physics, 1975, vol. 8, no. 5, pp. 561–567. doi: 10.1088/0022-3727/8/5/016
9. Benoy M.D., Mohammed E.M., Suresh Babu M., Binu P.J., Pradeep B. Thickness dependence of the properties of indium tin oxide (ITO) FILMS prepared by activated reactive evaporation. Brazilian Journal of Physics, 2009, vol. 39, no. 4, pp. 629–632. doi: 10.1590/S0103-97332009000600003
10. Kim H., Horwitz J.S., Kushto G., Pique A., Kafafi Z.H., Gilmore C.M., Chrisey D.B. Effect of film thickness on the properties of indium tin oxide thin films. Journal of Applied Physics, 2000, vol. 88, no. 10, pp. 6021–6025.
11. Dong-Ho Kim, Mi-Rang Park, Hak-Jun Lee, Gun-Hwan Lee. Thickness dependence of electrical properties of ITO film deposited on a plastic substrate by RF magnetron sputtering. Applied Surface Science, 2006, vol. 253, no. 2, pp. 409–411. doi: 10.1016/j.apsusc.2005.12.097
12. Gulen M., Yildirim G., Bal S., Varilci A., Belenli I., Oz M. Role of annealing temperature on microstructural and electro-optical properties of ITO films produced by sputtering. Journal of Materials Science: Materials in Electronics, 2013, vol. 24, no. 2, pp. 467–474. doi: 10.1007/s10854-012-0768-8
13. Brazhe R.A. Electrodynamic convection of free charge carriers in semiconductors. Physics of the Solid State, 1997, vol. 39, no. 2, pp. 245–247.
14. Manneville P. Rayleigh-Bernard convection, thirty years of experimental, theoretical, and modeling work. In: Dynamics of Spatio-Temporal Cellular Structures Springer Tracts in Modern Physics Volume, 2006, vol. 207, pp. 41–65.
15. Ginley D.S. Handbook of Transparent Conductors. NY, Springer, 2010, 534 p. doi: 10.1007/978-1-4419-1638-9

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License