General electrical characterisation of Ag/TiO2/n-InP/Au Schottky Diode
Abstract
In this study Ag/TiO2/n-InP/Au structures are formed on 500 μm thick, (100) oriented n-InP semiconductor having 3.13x1018 cm-3 carrier density, by using sputtering method. TiO2 is grown as an interface with thickness of 60 Å. Some parameters of this structure are investigated in temperature range of 120- 360 K. It is noticed that there are two linear regions in forward bias current-voltage (I-V) plot. These two regions are called as LBR (low bias region) and MBR(middle bias region). Richardson coefficient is determined and mean barrier height is calculated with double Gaussian distribution.
Keywords
TiO2, n-InP, Richardson coefficient, Gaussian distribution, Schottky
References
- Chand S., Kumar, J. (1997). “Effects of barrier height distribution on the behavior of a Schottky diode.” Journal of Applied Physics 82 (10) 5005.
- Çokduygulular, E., Çetinkaya, Ç., Yalçın, Y. et al. (2020). “A comprehensive study on Cu-doped ZnO (CZO) interlayered MOS structure”. J Mater Sci: Mater Electron 31, 13646–13656 https://doi.org/10.1007/s10854-020-03922-6
- Güzelçimen, F.,Tanören, B., Çetinkaya, Ç., Kaya, M., Efkere, H., Özen, Y., Bingöl, D., Sirkeci, M., Kınacı, B., Ünlü, M., Özçelik, S. (2020). “The effect of thickness on surface structure of rf sputtered TiO2 thin films by XPS, SEM/EDS, AFM and SAM” Vacuum. doi.org/10.1016/j.vacuum.2020.109766
- Hudait, M.K., Venkateswarlu, P., and Krupanidhi, S.B. (2001). “Electrical transport characteristics of Au/n-GaAs Schottky diodes on n-Ge at low temperatures.” Solid-State Electronics. 45 (1) 133-141.
- Janardhanam V., Ashok Kumar, A., Rajagopal Reddy V., Narasimha Reddy, P., (2009) “Study of current-voltage-temperature (I-V-T) and capacitance-voltage-temperature (C-V-T) characteristics of molybdenum Schottky contacts on n-InP (1 0 0)” Journal of Alloys and Compounds 485 (1) 467.
- Janardhanam, V., Jyothi, I., Ahn, K.S., Choi C.J., (2013) “Temperature-dependent current-voltage characteristics of Se Schottky contact to n-type Ge” Thin Solid Films 546 63.
- Özdemir, A. F., Turut, A., Kökçe, A. (2006). “The double Gaussian distribution of barrier heights in Au/n-GaAs Schottky diodes from I-V-T characteristics” Semiconductor Science and Technology 21 298.
- Padovani, F. A. and Stratton, R., (1966). “Field and Thermionic-Field EMSsion in Schottky Barriers.” Solid- State Electronics. 9 (7) 695-707.
- Rhoderick, E.H., Williams, R.H. (1988). Metal Semiconductor Contacts. Oxford: Oxford Press, 257-264.
- Saxena, A.N. (1969). “Forward current-voltage characteristics of Schottky barriers on n-type silicon.” Surface Science, 13 151-171.