A donor-acceptor pair broad band emission in AgGaS2

Leyris, J.P.; Aicardi, J.P.; Soule, S.

doi:10.1016/0022-2313(83)90026-1

Cited by 10 publications

(9 citation statements)

References 9 publications

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“…The A band has a FWHM of about 0.135 eV and has a Gaussian lineshape with slight asymmetry. These features are typical of emission bands due to donor-acceptor pair transitions observed in ternary compounds [14]. We also note that, for both the A and the B bands, the peak energy position and the emission band intensity change with temperature.…”

Section: Methodssupporting

confidence: 60%

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Radiative donor-acceptor pair recombination in TlInS₂single crystals

Aydınlı

Gasanly

Yılmaz

et al. 1999

Semicond. Sci. Technol.

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Photoluminescence (PL) spectra of TlInS2 layered single crystals were investigated in the 500-860 nm wavelength region and in the 11.5-100 K temperature range. We observed two PL bands centred at 515 nm (2.41 eV, A band) and 816 nm (1.52 eV, B band) at T = 11.5 K and an excitation intensity of 7.24 W cm−2. A detailed study of the A band was carried out as a function of temperature and excitation laser intensity. A red shift of the A band position was observed for both increasing temperature and decreasing excitation laser intensity in the range from 0.12 to 7.24 W cm −2. Analysis of the data indicates that the A band is due to radiative transitions from the moderately deep donor level located at 0.25 eV below the bottom of the conduction band to the shallow acceptor level located at 0.02 eV above the top of the valence band. An energy-level diagram for radiative donor-acceptor pair transitions in TlInS2 layered single crystals is proposed.

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Section: Methodssupporting

confidence: 60%

“…This contribution increases as theseparationbetweenthepairsdecreases [20]. Furthermore, radiative transition probabilities for different pair separations are different and decrease exponentially as a function of the pair distance [14]. We, therefore, observe a Donor-acceptor recombination in TlInS2 Figure 2.…”

Section: Deg/dmentioning

confidence: 75%

Radiative donor-acceptor pair recombination in TlInS₂single crystals

Aydınlı

Gasanly

Yılmaz

et al. 1999

Semicond. Sci. Technol.

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“…This contribution increases as the separation between the pairs decrease [15]. Furthermore, radiative transition probabilities for di!erent pair separations are di!erent and decrease exponentially as a function of the pair distance [16]. We, therefore, observe a shift of the emission band peak energy to higher energy as the intensity of the excitation laser increases.…”

Section: Resultsmentioning

confidence: 71%

Low-temperature visible photoluminescence spectra of TlGaSe2 layered crystal

Gasanly

Serpengüzel

Aydınlı

et al. 2000

Journal of Luminescence

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The photoluminescence (PL) spectra of TlGaSe layered single crystals were investigated in the 8.5}35 K temperature, 0.2}15.2 W cm\ excitation laser intensity, and in the 600}700 nm wavelength range. The PL spectrum has a slightly asymmetric Gaussian lineshape with a peak position located at 1.937 eV (640 nm) at 8.5 K. The PL is quenched with increasing temperature. The blue shift of the PL peak and the sublinear increase of the PL intensity with increasing laser intensity is explained using the inhomogenously spaced donor}acceptor pair recombination model. Analysis of the data indicates that the PL band is due to donor}acceptor recombination. A shallow acceptor level and a moderately deep donor level are, respectively, introduced at 0.012 eV above the top of the valence band and at 0.317 eV below the bottom of the conduction band. An energy-level diagram for radiative donor}acceptor pair recombination in TlGaSe layered single crystals is proposed

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“…We observed a broad low-energy peak in the spectrum located at 2.057 eV with a full-width at half-maximum (FWHM) of 119 meV and a slightly asymmetrical Gaussian line shape. These features are typical of emission bands due to donor-acceptor pair transitions observed in ternary and quaternary compounds [12,13]. For sample P1000 this peak dominates the whole 77 K-PL spectra, while for the sample P900 it appeared with lower intensity, and is barely perceived in sample P800 spectrum.…”

Section: Resultsmentioning

confidence: 87%