Metastable interstitials in CdSe and CdS crystals

An "anomalous" defect drift in external electric field, namely, transport of acceptorlike centres from the anode to the cathode, has been observed in CdS:Cu, CdS:Ag and nominally undoped CdSe crystals at 350-700 K. The effect is accounted for by transformation of acceptors into donors unde...

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Datum:2003
Hauptverfasser: Borkovska, L.V., Bulakh, B.M., Khomenkova, L.Yu., Korsunska, N.O., Markevich, I.V.
Format: Artikel
Sprache:English
Veröffentlicht: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2003
Schriftenreihe:Semiconductor Physics Quantum Electronics & Optoelectronics
Online Zugang:https://nasplib.isofts.kiev.ua/handle/123456789/118082
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Zitieren:Metastable interstitials in CdSe and CdS crystals / L.V. Borkovska, B.M. Bulakh, L.Yu. Khomenkova, N.O. Korsunska, I.V. Markevich // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2003. — Т. 6, № 4. — С. 437-440. — Бібліогр.: 14 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
Beschreibung
Zusammenfassung:An "anomalous" defect drift in external electric field, namely, transport of acceptorlike centres from the anode to the cathode, has been observed in CdS:Cu, CdS:Ag and nominally undoped CdSe crystals at 350-700 K. The effect is accounted for by transformation of acceptors into donors under heating. The donors are metastable centres that do not display themselves in the equilibrium state and can be revealed only by drift in electric field. The acceptors are shown to be substitutional impurity atoms, acceptor-to-donor transformation occurring due to transition of these atoms from lattice sites to interstitials. Under cooling reverse donor-to-acceptor transition takes place.