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Effects of Mg dopant in Al-composition-graded Al x Ga1−x N (0.45 ≤ x) on vertical electrical conductivity of ultrawide bandgap AlGaN p–n junction

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dc.abstract.enA vertical electrical conductivity of an ultrawide bandgap AlGaN p–n junction with Al-composition-graded AlxGa1−xN (0.45 ≤ x) p-type layer was systematically investigated via experiments and numerical simulation. The experimental results revealed that the initial Al composition of the Al-composition-graded AlGaN should be sufficiently high without Mg dopants to generate enough holes by polarization-induced doping even though the bandgap is higher than that of conventional bulk p-AlGaN. The mechanism behind the vertical conduction is investigated by the simulation, which shows that three-dimensional hole gas formed by the polarization is compensated with electrons generated by unintentionally formed donors.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorPiechota, Jacek
dc.contributor.authorSakowski, Konrad
dc.contributor.authorKempisty, Paweł
dc.contributor.authorSato, Kosuke
dc.contributor.authorYamada, Kazuki
dc.contributor.authorIwaya, Motoaki
dc.contributor.authorTakeuchi, Tetsuya
dc.contributor.authorKamiyama, Satoshi
dc.contributor.authorKrukowski, Stanisław
dc.contributor.authorKangawa, Yoshihiro
dc.contributor.authorAkasaki, Isamu
dc.date.accessioned2024-01-24T22:28:37Z
dc.date.available2024-01-24T22:28:37Z
dc.date.issued2021
dc.description.financePublikacja bezkosztowa
dc.description.number9
dc.description.volume14
dc.identifier.doi10.35848/1882-0786/AC1D64
dc.identifier.issn1882-0778
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/105784
dc.identifier.weblinkhttps://iopscience.iop.org/article/10.35848/1882-0786/ac1d64
dc.languageeng
dc.pbn.affiliationmathemathics
dc.relation.ispartofApplied Physics Express
dc.relation.pages96503:1-6
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleEffects of Mg dopant in Al-composition-graded Al x Ga1−x N (0.45 ≤ x) on vertical electrical conductivity of ultrawide bandgap AlGaN p–n junction
dc.typeJournalArticle
dspace.entity.typePublication