Deep Centers Influence On Photoresponse Characteristics In High-Resistivity ZnSe

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dc.contributor.authorКовальов, Леонід Євгенійович
dc.contributor.authorKovalev, L. E.
dc.contributor.authorKovalyov, L. E.
dc.date.accessioned2015-11-19T18:59:35Z
dc.date.available2015-11-19T18:59:35Z
dc.date.issued2011
dc.description.abstractThe photocurrent peak after preliminary optical excitation with specific wavelength in high resistivity (ρ≍1012 Ω∗cm), unintentionally doped ZnSe monocrystals was observed. To study photocurrent “flash” phenomenon, the photocurrent relaxation spectra, photon-capture crosssection (PCCS) spectra and photo-electron paramagnetic resonance (photo-EPR) were investigated. Two-levels model involving the recombination of an S-center and an acceptor A has been developed to obtain the relation between recombination probability and instantaneous photocurrent value. The S-centers ionization energies (1.06eV and 1.14eV from the bottom of the conduction band) and charge carriers life times were determined. The acceptor's positions in ZnSe band gap are equal to 2.05, 2.11, 2.16 and 2.21eV from the bottom of the conduction band. The photocurrent and PCCS “flash” nature as well as complicated photo-EPR are associated with the relaxation of S-centers attributed to Fe ion in the band gap of semi-insulated ZnSe.uk_UA
dc.identifier.citationKorotkov V.A., Bruk L.I., Simashkevich A.V., Gorea O.S., Kovalev L.E., Malikova L.V. Deep centers influence on photoresponse characteristics in high-resistivity ZnSe // Materials Research Society Symposium - Proceedings. 1997. V. 442. P. 579–584.uk_UA
dc.identifier.isbn9781558993464 [1558993460]
dc.identifier.urihttp://lib.udau.edu.ua/handle/123456789/590
dc.identifier.urihttp://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8082940&fulltextType=RA&fileId=S1946427400283255
dc.language.isoen_USuk_UA
dc.publisherMRS Online Proceedings Library, Cambridge University Pressuk_UA
dc.subjectphotocurrentuk_UA
dc.subjectZnSeuk_UA
dc.subjectphoto-electron paramagnetic resonanceuk_UA
dc.subjectS-centeruk_UA
dc.titleDeep Centers Influence On Photoresponse Characteristics In High-Resistivity ZnSeuk_UA
dc.typeСтаттяuk_UA
dc.typeScopus
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