Temperature Dependent Barrier Height, Ideality Factor, Series Resistance of the Al/Al2O3/p-Si (MIS) Diodes Using Cheung’s Functions in Temperature Range of 200-320 K

Marıl, Elif and Kosal, Mehmet and Altındal, Şemsettin (2019) Temperature Dependent Barrier Height, Ideality Factor, Series Resistance of the Al/Al2O3/p-Si (MIS) Diodes Using Cheung’s Functions in Temperature Range of 200-320 K. In: 1st International Conference on Optoelectronics, Applied Optics and Microelectronics - 2019.

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Abstract

In this study, the main electrical parameters such as barrier height (BH), ideality factor (n), series resistance (Rs) of the fabricated Al/Al2O3/p-Si (MIS) diodes have been investigated as function of temperature. For this purpose, Cheung’s plots were drawn from the downward concave curvature region in the forward bias semi-logarithmic current-voltage (I-V) plots originated from Rs in temperature range of 200-320 K. It is well known that these electrical parameters may be depended of calculation method as well as bias voltage. Since the LnI-V plot has linear only at narrow bias voltage, the reliability and accuracy of the results may be discussed. Therefore, firstly the value of Rs and n were obtained from the slope and intercept of the first-Cheung function (dV/dL(I)-I plot), respectively. Secondly, the value of Rs and BH were obtained from the slope and intercept of second-Cheung function (H(I)-I plot), respectively. All these parameters were found a function of temperature. While the BH increase with increasing temperature as exponentially, Rs and n decrease. The obtained higher value of n and this positive temperature coefficient of BH were attributed to the existence of barrier in-homogeneities or pinch-off /patches at around mean BH, interface traps at Al2O3/p-Si interface.

Item Type: Conference or Workshop Item (Paper)
Persian Title: Temperature Dependent Barrier Height, Ideality Factor, Series Resistance of the Al/Al2O3/p-Si (MIS) Diodes Using Cheung’s Functions in Temperature Range of 200-320 K
Persian Abstract: -
Subjects: Divisions > Conferences > 1st International Conference on Optoelectronics, Applied Optics and Microelectronics - 2019
Conferences > 1st International Conference on Optoelectronics, Applied Optics and Microelectronics - 2019
Divisions: Conferences > 1st International Conference on Optoelectronics, Applied Optics and Microelectronics - 2019
Subjects > Conferences > 1st International Conference on Optoelectronics, Applied Optics and Microelectronics - 2019
Date Deposited: 08 Dec 2019 06:07
Last Modified: 08 Dec 2019 06:07
URI: http://repository.uma.ac.ir/id/eprint/10434

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