Electronic and vibrational reflection spectra of CdGeAs2 in crystalline and vitreous states

Goryunova, N. A.; Groß, E.; Zlatkin, L. B.; Ivanov, E.K.

doi:10.1016/0022-3093(70)90020-7

Cited by 16 publications

(3 citation statements)

References 2 publications

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“…For determination of centro-frequency of crystalline CdGeAs, the corresponding vibrational reflection spectra have been analysed [9]. The centro-frequency corresponding t o amorphous CdGeAs, could not be computed as the vibrational modes in the refleetion spectra appear to be completely suppressed.…”

Section: Resultsmentioning

confidence: 99%

Effect of Anharmonicity on Urbach's Exponential Tail in Amorphous Semiconductors

Bhatia

Bhat

1974

Physica Status Solidi (b)

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At the crystal-glass transition the overall short range order is retained but a distortion exists in the interatomic bonds which introduces a nonlinearity in the interatomic forces. The characteristics of amorphous materials have been studied taking into account the nonlinearity of the interat,omic forces. This anharmonicity in amorphous semiconductors is related with the decreased slope of the exponential part of the fundamental optical absorption edge of a semiconductor.Reim Kristall-Glas-Ubergang bleibt die Gesamt-Nahordnung erhalten, jedoch existiert eine Storung in den interatomaren Bindungen, die eine Nichtlinearitat in den interatomaren Kraften einfiihrt. Die Charakteristiken von amorphen Materialien wurden unter Beriicksichtigung der h'ichtlinearitat der interatomaren Krafte untersucht. Diese Anharmonizitat inamorphen Halbleitern wird rnit d-r abnehmenden Steigung des exponentiellen Teils der Grundgitterabsorptionskante eines Halbleiters in Verbindung gebracht.

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Section: Resultsmentioning

confidence: 99%

Effect of Anharmonicity on Urbach's Exponential Tail in Amorphous Semiconductors

Bhatia

Bhat

1974

Physica Status Solidi (b)

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“…Optical constants for the 11-to 1-eV range have been taken from Goryunova et al [ 11 ]. They extracted optical constants for single-crystal and amorphous samples from a Kramers-Kronig analysis of unpolarized, roomtemperature reflectance data.…”

Section: X-ray To Band-gap Absorption Edgementioning

confidence: 99%

“…The optical constants for E ]] c and E.Lc in the one-phonon region from 20 to 200/xm were derived by dispersion analysis from polarized refiectivity measurements by Holah et al [26]. With j harmonic oscillators, the formula for the dielectric constant e(u) is [27] and Goryunova et al [ 11 ] previously had measured the lattice reflectivity with unpolarized light and derived the optical constants from 20 to 80/xm for single-crystal and amorphous specimens. They obtained a e~ of 14.3 and a eo of 18.7.…”

Section: Lattice Absorption In the Infraredmentioning

confidence: 99%