Investigation of Injection- and Radiation-Thermal Processes in Thin Gate Dielectric Films of MIS Structures

2018 ◽  
Vol 781 ◽  
pp. 47-52
Author(s):  
Dmitrii Andreev ◽  
Gennady Bondarenko ◽  
Vladimir Andreev ◽  
Alexander Stolyarov

In order to modify the gate dielectric of MIS structures we suggest to implement the injection-thermal treatment which consists in the high-field injection of electrons of set density into the thin dielectric film and the subsequent annealing of the structure. We investigate an influence of modes of the injection-thermal treatment onto the modification of MIS structures. We demonstrate that the processes of MIS structure modification taking place at the injection-thermal treatment in many respects are identical to the processes taking place at the radiation-thermal treatment. We study an influence of modes of the high-field electron injection into the gate dielectric of MIS structure onto densities of charge defects and the injection hardness of samples. Besides, we research an influence of doping of the silicone dioxide film by phosphorus onto the same characteristics.

2021 ◽  
Vol 12 (2) ◽  
pp. 517-520
Author(s):  
D. V. Andreev ◽  
G. G. Bondarenko ◽  
V. V. Andreev ◽  
A. A. Stolyarov

2020 ◽  
pp. 68-74
Author(s):  
D. V. Andreev ◽  
◽  
G. G. Bondarenko ◽  
V. V. Andreev ◽  
A. A. Stolyarov ◽  
...  

In the paper we demonstrate that the thermal doping of SiO2 film by phosphorus, causing formation of thin film of phospho-silicate glass on its surface, allows to rise charge stability of gate dielectric of MIS structure. We have ascertained that a presence of the film of phospho-silicate glass has given a possibility to significantly lower local injection currents flowing within defects because of electron capturing by traps located in the film of phospho-silicate glass what results in the rising of energy barrier. As a result, amount of the structures that comes to a state of breakdown at low values of charge injected into the dielectric under high fields noticeably reduces. We show that heating processes of injected electrons lowers in the films of phospho-silicate glass and this results in increasing of charge stability of the gate dielectric under high-field injection.


2019 ◽  
Vol 37 ◽  
pp. 279-285 ◽  
Author(s):  
Dmitrii V. Andreev ◽  
Gennady G. Bondarenko ◽  
Vladimir V. Andreev ◽  
Alexander A. Stolyarov

2015 ◽  
Vol 6 (2) ◽  
pp. 128-132 ◽  
Author(s):  
V. V. Andreev ◽  
G. G. Bondarenko ◽  
A. A. Stolyarov ◽  
D. M. Akhmelkin

2018 ◽  
Author(s):  
K. A. Rubin ◽  
W. Jolley ◽  
Y. Yang

Abstract Scanning Microwave Impedance Microscopy (sMIM) can be used to characterize dielectric thin films and to quantitatively discern film thickness differences. FEM modeling of the sMIM response provides understanding of how to connect the measured sMIM signals to the underlying properties of the dielectric film and its substrate. Modeling shows that sMIM can be used to characterize a range of dielectric film thicknesses spanning both low-k and medium-k dielectric constants. A model system consisting of SiO2 thin films of various thickness on silicon substrates is used to illustrate the technique experimentally.


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