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Warianty tytułu
Homogeneity of electrical parameters of tellurium-doped gallium antimonide single crystals
Języki publikacji
Abstrakty
Monokryształy antymonku galu (GaSb) domieszkowane tellurem prezentowane w tej pracy otrzymane zostały zmodyfikowaną metodą Czochralskiego zintegrowaną z syntezą in-situ. Uzyskano płytki monokrystaliczne GaSb:Te o przewodnictwie zarówno typu n jak i typu p. Płytki GaSb:Te typu n charakteryzowały się standardową koncentracją nośników ładunku (od 2 x 1017 do 2 x 1018 cm-3) oraz poniżej 2 x 1017 cm-3. Dla płytek monokrystalicznych GaSb:Te typu p koncentracja dziur wynosiła od 2 x 1016do 4 x 1016 cm-3. Zbadano zarówno osiowe, jak i radialne rozkłady własności elektrycznych otrzymanych kryształów GaSb:Te. W oparciu o pomiary hallowskie w funkcji temperatury porównano własności niedomieszkowanych monokryształów otrzymanych z antymonu pochodzącego z różnych źródeł oraz kryształów domieszkowanych tellurem o typie przewodnictwa p oraz typie n.
Gallium antimonide (GaSb) single crystals undoped and doped with tellurium with n-type or p-type conductivity were grown by a modified Czochralski method integrated with in-situ synthesis. Tellurium doped n-type GaSb single crystals were obtained with standard carrier concentration from 2 x 1017 to 2 x 1018 cm-3 as well as below 2 x 1017 cm-3 for low Te-doped single crystals. Hole concentration in the cas of tellurium doped p-type GaSb wafers varied between 4 x 1016 and 2 x 1016 cm-3. Axial and radial distribution of electrical parameters were investigated for the obtained Te-doped GaSb single crystals. A great contribution of compensation and self-compensation mechanisms was confirmed especially for low Te-doped GaSb single crystals. Temperature dependent Hall measurements were used to compare undoped GaSb crystals obtained from Sb of different purity tellurium doped GaSb with n-type or p-type conductivity.
Czasopismo
Rocznik
Tom
Strony
3--21
Opis fizyczny
Bibliogr. 40 poz., rys., wykr.
Twórcy
autor
autor
autor
- Instytut Technologii Materiałów Elektronicznych, ul. Wólczyńska 133, 01-919 Warszawa, aleksandra.mirowska@itme.edu.pl
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BAT5-0073-0025