Title of article :
Temperature dependent electrical characteristics
of Sn/p-Si Schottky diodes
Author/Authors :
Enise Ayyildiz، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Abstract :
Current–voltage and capacitance–voltage characteristics of Sn/p-Si Schottky diodes measured in the temperature range 80–
320 K are presented and analysed. Anomalous strong temperature dependencies of the ideality factor and apparent barrier height
were obtained. There was also a considerable difference between the apparent barrier heights obtained from current–voltage and
capacitance–voltage characteristics. These anomalies are explained by the domination of the current by a high level of
thermionic-field emission, and by the presence of deep levels near the Sn/Si interface, which yield a reduction of free hole
concentration and a significant temperature dependence of the charge stored near the metal–semiconductor (MS) interface. The
evaluation of temperature dependence of forward current for thermionic-field emission resulted in the following parameters:
characteristic energy E00 = 9.8 meV, Schottky barrier height at zero bias Fb0 = 0.802 eV, bias coefficient of barrier height b = 0,
and effective Richardson constant A* = 37.32 A cm 2 K 2.
Keywords :
Thermionic-field emission , Schottky junctions , Current–voltage and capacitance–voltage characteristics
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science