Photoluminescence and Raman spectroscopy of polycrystalline AgInTe2

Jagomägi, Andri; Krustok, J.; Raudoja, J.; Grossberg, Michael; Oja, I.; Krunks, Malle; Danilson, Mati

doi:10.1016/j.tsf.2004.11.009

Cited by 18 publications

(16 citation statements)

References 15 publications

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“…The peaks at 122 cm -1 and 140 cm -1 proved to be the highest in the Raman spectrum. The former is easily assigned to totally symmetrical Te sublattice vibrations, the latter of even greater intensity being related to B 1 or E mode, as suggested in [22]. From the results of our calculations one can assume another possible interpretation of the experimental frequency 140 cm -1 .…”

Section: Calculation Methodssupporting

confidence: 68%

“…Indeed, calculated frequencies of A 1 and A 2 modes in LAT and LGT (Table 4) are very close to the results for AgInTe 2 and though in the case of LIT the direct comparison seems to be poor, the shift of the A 2 mode from the A 1 one in LIT (16 cm -1 ) is almost the same as the difference between the experimental frequencies 122 cm -1 and 140 cm -1 . Hence, we can suppose that the peak at 140 cm -1 in AgInTe 2 Raman spectra can be assigned to the activated A 2 mode, in this case its significant height indicates the substantial disordering of the sample studied in [22]. In Raman LGT spectra presented in [6] the scattering intensity corresponding to 97 cm -1 and 142 cm -1…”

Section: Calculation Methodsmentioning

confidence: 91%

“…The intensity of the lines corresponding to the vibrations of A 2 symmetry can serve as a probe of the structural perfection of a sample. From this point of view it is interesting to compare the Raman data in [6] (LGT) with those in [22] for AgInTe 2 . In [22] Ag-containing polycrystalline AgInTe 2 , being a LIT analogue, has been synthesized.…”

Section: Calculation Methodsmentioning

confidence: 99%

“…From this point of view it is interesting to compare the Raman data in [6] (LGT) with those in [22] for AgInTe 2 . In [22] Ag-containing polycrystalline AgInTe 2 , being a LIT analogue, has been synthesized. The peaks at 122 cm -1 and 140 cm -1 proved to be the highest in the Raman spectrum.…”

Section: Calculation Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Lattice dynamics of chalcopyrite semiconductors LiAlTe₂, LiGaTe₂ and LiInTe₂

Kosobutsky

Basalaev

Поплавной

2009

Physica Status Solidi (b)

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Within density functional perturbation theory using norm‐conserving pseudopotentials and a plane‐wave basis set calculations of phonon dispersion relations and densities of states of LiAlTe2, LiGaTe2 and LiInTe2 compounds being crystallized into the tetragonal chalcopyrite structure have been performed. Theoretical values of phonon mode frequencies in LiGaTe2 and LiInTe2 are in good agreement with the experimental data available for these crystals obtained by the methods of Raman and infrared spectroscopies. The similarity of the physical and chemical properties of the crystals concerned manifests itself in the similarity of their phonon spectra that are especially close to each other in low‐ and high‐frequency ranges. Phonon modes of the upper phonon band are predominantly caused by the lithium sublattice vibrations and have an upper bound of 350–370 cm–1. In a mid‐frequency range a significant downshift of the vibrational frequencies is observed on going from LiAlTe2 to LiGaTe2 and LiInTe2 that is a consequence of the third group cation mass reduction. From calculated electron density maps it follows that Li‐containing chalcopyrites are characterized by a less pronounced bond between the first group cation and anion as compared with the Cu‐ and Ag‐based analogs due to the absence of pd‐hybridization. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Calculation Methodssupporting

confidence: 68%

Section: Calculation Methodsmentioning

confidence: 91%

Section: Calculation Methodsmentioning

confidence: 99%

Section: Calculation Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Lattice dynamics of chalcopyrite semiconductors LiAlTe₂, LiGaTe₂ and LiInTe₂

Kosobutsky

Basalaev

Поплавной

2009

Physica Status Solidi (b)

View full text Add to dashboard Cite

show abstract

“…In particular, recent implementation on electrical properties and phase transformation under high pressure shows that diamond anvil cell can exist up to several million atmospheres. Similar to those in the same group, AgInTe 2 is one of chalcopyrites which is utilized in a number of industrial applications [4][5][6] with the direct band gap reported to be 1.02 eV [7]. Our previous study has reported the structural phase transition of AgInTe 2 under pressure up to 26 GPa that is the highest pressure reached experimentally for this material.…”

Section: Introductionsupporting

confidence: 63%