Reassignment of the OSe−VCd complex in CdSe

Bastin, D.; Lavrov, E. V.; Weber, J.

doi:10.1063/1.4865628

Cited by 2 publications

(3 citation statements)

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“…The previously reported modes of

{SO}_{n}^{*}

at 1094 (

γ_{1}

), 1107 (

γ_{2}

), and

1126 {cm}^{- 1}

(

γ_{3}

) dominate the spectrum of the sample with natural abundances of oxygen isotopes. [ 9,10 ] Each of these modes is accompanied by weaker lines, setting up the groups

I (γ_{1})

I (γ_{2})

, and

I (γ_{3})

. Similar to the case of CdTe, the intensities of the IR absorption lines within each group match the natural abundances of the sulfur isotopes.…”

Section: Resultsmentioning

confidence: 95%

“…

{SO}_{n}^{*}

in CdTe results in a doublet feature of local vibrational modes (LVMs) at 1097 and 1108 cm −1 , [ 6–8 ] whereas the

{SO}_{n}^{*}

complex in CdSe causes a triplet structure at 1094, 1107, and 1126 cm −1 . [ 9,10 ] All ibrational frequencies are characteristic to stretching modes of

S - O

bonds. Evidence for the involvement of sulfur and oxygen in

{SO}_{n}^{*}

was obtained by spectroscopic identification of weak

^{34} S

isotope analogues of the main

^{32} S

features [ 8,10 ] and in‐growth oxygen doping experiments, [ 6,7,9 ] respectively.…”

Section: Introductionmentioning

confidence: 99%

“…[ 9,10 ] All ibrational frequencies are characteristic to stretching modes of

S - O

bonds. Evidence for the involvement of sulfur and oxygen in

{SO}_{n}^{*}

was obtained by spectroscopic identification of weak

^{34} S

isotope analogues of the main

^{32} S

features [ 8,10 ] and in‐growth oxygen doping experiments, [ 6,7,9 ] respectively. The microscopic structure of the complexes in CdTe and CdSe, however, has remained largely unclear so far.…”

Section: Introductionmentioning

confidence: 99%

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SO₄ in Cadmium Chalcogenides: CdSe versus CdTe

Herklotz

Lavrov

Мельников

2022

Physica Status Solidi (b)

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A study combining infrared (IR) absorption spectroscopy and first‐principles theory is presented for a sulfur–oxygen complex in CdSe characterized by IR absorption lines located at 1094, 1107, and 1126 cm−1 (10 K). The properties of the center are compared to a similar species occurring in CdTe that gives rise to two absorption lines at 1097 and 1108 cm−1 (10 K). Temperature‐ and polarization‐sensitive measurements performed on 18O‐enriched samples reveal that for both materials the IR absorption lines are due to split stretch vibrations of a distorted sulfate () tetrahedron, whereby the local point group of the complex is reduced to and in hexagonal CdSe and cubic CdTe, respectively. Measurements on the vibrational spectrum of the sulfate species in the spectral range of symmetric stretch (), bend (), and combination modes () are presented. The cation vacancy is discussed as a likely site occupied by in CdSe.

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“…The previously reported modes of

{SO}_{n}^{*}

at 1094 (

γ_{1}

), 1107 (

γ_{2}

), and

1126 {cm}^{- 1}

(

γ_{3}

) dominate the spectrum of the sample with natural abundances of oxygen isotopes. [ 9,10 ] Each of these modes is accompanied by weaker lines, setting up the groups

I (γ_{1})

I (γ_{2})

, and

I (γ_{3})

. Similar to the case of CdTe, the intensities of the IR absorption lines within each group match the natural abundances of the sulfur isotopes.…”

Section: Resultsmentioning

confidence: 95%

“…

{SO}_{n}^{*}

in CdTe results in a doublet feature of local vibrational modes (LVMs) at 1097 and 1108 cm −1 , [ 6–8 ] whereas the

{SO}_{n}^{*}

complex in CdSe causes a triplet structure at 1094, 1107, and 1126 cm −1 . [ 9,10 ] All ibrational frequencies are characteristic to stretching modes of

S - O

bonds. Evidence for the involvement of sulfur and oxygen in

{SO}_{n}^{*}

was obtained by spectroscopic identification of weak

^{34} S

isotope analogues of the main

^{32} S

features [ 8,10 ] and in‐growth oxygen doping experiments, [ 6,7,9 ] respectively.…”

Section: Introductionmentioning

confidence: 99%

“…[ 9,10 ] All ibrational frequencies are characteristic to stretching modes of

S - O

bonds. Evidence for the involvement of sulfur and oxygen in

{SO}_{n}^{*}

was obtained by spectroscopic identification of weak

^{34} S

isotope analogues of the main

^{32} S

features [ 8,10 ] and in‐growth oxygen doping experiments, [ 6,7,9 ] respectively. The microscopic structure of the complexes in CdTe and CdSe, however, has remained largely unclear so far.…”

Section: Introductionmentioning

confidence: 99%

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