[PDF]
http://dx.doi.org/10.3952/lithjphys.47404
Open access article / Atviros prieigos straipsnis
Lith. J. Phys. 47, 63–67 (2007)
DYNAMIC C–V
CHARACTERISTICS OF MOS STRUCTURES
S. Sakalauskasa and Z. Vaitonisb
aFaculty of Physics, Vilnius University, Saulėtekio
9, LT-10222 Vilnius, Lithuania
bInstitute of Materials Science and Applied
Research, Vilnius University, Saulėtekio 9, LT-10222 Vilnius,
Lithuania
E-mail: zenonas.vaitonis@ff.vu.lt
Received 23 June 2007; revised 20
September 2007; accepted 21 November 2007
Dynamic C–V
characteristics of metal–SiO2–semiconductor (MOS)
structures with p-type semiconductor, made by different
technologies, were investigated in this work. Voltage–capacitance
characteristics of the structures were measured by linearly
varying voltage method. Theoretic and experimental analysis of the
method revealed peculiarities of its application. It was
determined that dynamic C–V characteristics of the
MOS structures have a peak of the capacitance (wider or narrower),
its value being higher than capacitance of SiO2 layer,
when the mode of operation changes from depletion to inversion.
That character of voltage–capacitance characteristics is
determined by redistribution of charge carriers in the
heterojunction Si–SiO2 and recharging rapidity of
surface states.
Keywords: linearly varying voltage, MOS
structure, C–V characteristics
PACS: 84.37.+q, 73.40.Qv
DINAMINĖS MOP DARINIŲ C–V
CHARAKTERISTIKOS
S. Sakalauskas, Z. Vaitonis
Vilniaus universitetas, Vilnius, Lietuva
Pateikti skirtingomis technologijomis
suformuotų MOP darinių su skylinio laidumo puslaidininkiu
dinaminių C–V charakteristikų tyrimo rezultatai.
Darinių voltfaradinės charakteristikos buvo matuojamos tiesiškai
kintančios įtampos metodu, kurio teorinė ir eksperimentinė analizė
atskleidė jo taikymo ypatumus. Tyrimo metu nustatyta, kad MOP
darinių dinaminės C–V charakteristikos turi
charakteringą talpos smailę (siauresnę ar platesnę), pereinant iš
nuskurdinimo į inversinį veikos režimą. Tokį voltfaradinių
charakteristikų pobūdį nulemia krūvininkų persiskirstymas
nevienalytėje sandūroje Si–SiO2 ir paviršinių būsenų
persielektrinimo sparta.
References / Nuorodos
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http://dx.doi.org/10.1209/epl/i2003-10288-6
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