Lattice Dynamics of Chalcopyrite Type Compounds Part IV. Calculations of TO Phonon Modes in a Reduced Rigid Ion Model

Ohrendorf, F. W.; Haeuseler, H.

doi:10.1002/1521-4079(200005)35:5<569::aid-crat569>3.0.co;2-a

Cited by 14 publications

(3 citation statements)

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“…By comparing our results with theoretical calculations and previously reported experimental observations, we have identified some deviations from the commonly observed features. The indicated modes (A 1 and B 2 ) are slightly shifted to lower frequencies than those reported for bulk AgInSe 2 [19][20][21]. This shift could arise from structural differences between thin films and bulk crystalline AgInSe 2 .…”

Section: Structural and Chemical Properties Of The Aginse 2 Films On ...mentioning

confidence: 68%

Silicon nanowire–silver indium selenide heterojunction photodiodes

et al. 2013

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Structural and optoelectronic properties of silicon (Si) nanowire-silver indium selenide (AgInSe2) thin film heterojunctions were investigated. The metal-assisted etching method was employed to fabricate vertically aligned Si nanowire arrays. Stoichiometric AgInSe2 films were then deposited onto the nanowires using co-sputtering and sequential selenization techniques. It was demonstrated that the three-dimensional interface between the Si nanowire arrays and the AgInSe2 thin film significantly improved the photosensitivity of the heterojunction diode compared to the planar reference. The improvements in device performance are discussed in terms of interface state density, reflective losses and surface recombination of the photogenerated carriers, especially in the high-energy region of the spectrum.

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Section: Structural and Chemical Properties Of The Aginse 2 Films On ...mentioning

confidence: 68%

Silicon nanowire–silver indium selenide heterojunction photodiodes

et al. 2013

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“…It is not possible to identify unequivocally these vibrations but they could relate to the modes at 275, 263, 171, and 165 cm −1 . According to observations of chalcopyrite‐like compounds given by Ohrendorf and Haeuseler, it is possible to observe vibrations of Cu–S bonds in the region 250–300 cm −1 . Unfortunately, clear assignment of possible vibrations of Cu–S or Cu–Se bonds in sulfosalts or corresponding selenides have not been published yet.…”

Section: Resultsmentioning

confidence: 94%

Micro‐Raman spectroscopy of natural members along CuSbS₂–CuSbSe₂ join

Sejkora

Buixaderas

Škácha

et al. 2018

J Raman Spectroscopy

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Micro‐Raman spectroscopy was used to investigate the natural orthorhombic members (space group Pnma) along the CuSbS2–CuSbSe2 join: chalcostibite Cu1.01Sb1.00S1.99 from Dúbrava (Slovak Republic); Se‐rich chalcostibite Cu1.00(Sb0.99As0.02)Σ1.01(S1.29Se0.70)Σ1.99 and the new mineral příbramite Cu0.99(Sb1.03As0.01)Σ1.04(Se1.82S0.15)Σ1.97 both from the Příbram uranium and base‐metal district (Czech Republic). Stretching and bending vibrations of the pyramidal SbS3 groups occur between 350 and 200 cm−1; vibrations of SbSe3 groups are shifted to the range 240–80 cm−1 due to the almost twice heavier mass of Se compared with S. The shift of the ν1 symmetric Sb‐(S,Se) vibration was observed, yielding 113 cm−1, and for the ν3 antisymmetric stretching Sb‐(S,Se), vibration was about 127 cm−1. The wavenumber of the ν1 symmetric Sb–S stretching vibrations decreases with increasing Se content—from 336 (in chalcostibite) over 330 (in Se‐rich chalcostibite) to 326 cm−1 (in příbramite), and a similar situation was observed for the case of ν1 symmetric Sb–Se stretching vibrations from 220 in Se‐rich chalcostibite to 215 cm−1 in příbramite. The trend for the ν3 antisymmetric Sb‐(S,Se) stretching vibrations is the opposite, from 306 cm−1 in chalcostibite to 314 cm−1 in Se‐rich chalcostibite (Sb–S bonds) and from 180 cm−1 in Se‐rich chalcostibite to 185 cm−1 in příbramite (Sb–Se bonds). These small shifts are probably connected with the influencing of the bonding environment of SbS3 and SbSe3 pyramids. The vibrations of Cu‐S(Se) bonds are represented only by less intense bands, and the observed intense bands below 80 cm−1 should correspond to external modes.

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“…LISe is a nonlinear chalcogenide biaxial orthorhombic crystal with high optical quality [4]. It belongs to LiB III C IV 2 family compounds, which exhibit a tetrahedral lattice structure [5]. The structural and electronic properties of LISe have been reported previously [6,7].…”

Section: Introductionmentioning

confidence: 99%

Optical properties of LiInSe_2 in the THz frequency regime

Liang

Wang

Tao

et al. 2014

Opt. Mater. Express

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We investigate the optical properties of LiInSe 2 (LISe) by THz time-domain spectroscopy (THz-TDS). The experimental results indicate that LISe has excellent transparency in the THz frequency region. We determine quantitatively the birefringence of LISe. The refractive index and absorption coefficient along the three dielectric axes of LISe are reported in the THz frequency region. The lattice vibrations of LISe are analyzed on the basis of the THz-TDS measurement in combination with infrared and Raman spectra. The origin of the low-frequency vibrational modes below 3 THz as interatomic bond-bending modes is revealed.

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Lattice Dynamics of Chalcopyrite Type Compounds Part IV. Calculations of TO Phonon Modes in a Reduced Rigid Ion Model

Cited by 14 publications

References 5 publications

Silicon nanowire–silver indium selenide heterojunction photodiodes

Silicon nanowire–silver indium selenide heterojunction photodiodes

Micro‐Raman spectroscopy of natural members along CuSbS₂–CuSbSe₂ join

Optical properties of LiInSe_2 in the THz frequency regime

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Lattice Dynamics of Chalcopyrite Type Compounds Part IV. Calculations of TO Phonon Modes in a Reduced Rigid Ion Model

Cited by 14 publications

References 5 publications

Silicon nanowire–silver indium selenide heterojunction photodiodes

Silicon nanowire–silver indium selenide heterojunction photodiodes

Micro‐Raman spectroscopy of natural members along CuSbS2–CuSbSe2 join

Optical properties of LiInSe_2 in the THz frequency regime

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Product

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Micro‐Raman spectroscopy of natural members along CuSbS₂–CuSbSe₂ join