Optical characteristics of Tl0.995Cu0.005InS2 single crystals
Identifieur interne : 000794 ( Main/Repository ); précédent : 000793; suivant : 000795Optical characteristics of Tl0.995Cu0.005InS2 single crystals
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Abstract
Optical properties of Tl0.995Cu0.005InS2 single crystals were studied using transmittance and reflectance measurements in the spectral wavelength range of 300-2500 nm. The optical constants (n and k) were calculated at room temperature. The analysis of the spectral behavior of the absorption coefficient in the absorption region revealed indirect transition. The refractive index dispersion data were analyzed in terms of the single oscillator model. Dispersion parameters such as the single oscillator energy (Eo), the dispersion energy (Ed), the high frequency dielectric constant (ε∞), the lattice dielectric constant (εL) and the ratio of free charge carrier concentration to the effective mass (N/m*) were estimated. The third order nonlinear susceptibility (χ(3)) was calculated according to the generalized Miller's rule. Also, the real and imaginary parts of the complex dielectric constant were determined.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Optical characteristics of Tl<sub>0.995</sub>Cu<sub>0.005</sub>InS<sub>2</sub> single crystals</title><author><name sortKey="El Nahass, M M" uniqKey="El Nahass M">M. M. El-Nahass</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, Faculty of Education, Ain Shams University, Roxy</s1><s2>11757 Cairo</s2><s3>EGY</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Égypte</country><wicri:noRegion>11757 Cairo</wicri:noRegion></affiliation></author><author><name sortKey="Ali, H A M" uniqKey="Ali H">H. A. M. Ali</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, Faculty of Education, Ain Shams University, Roxy</s1><s2>11757 Cairo</s2><s3>EGY</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Égypte</country><wicri:noRegion>11757 Cairo</wicri:noRegion></affiliation></author><author><name sortKey="Abu Samaha, F S H" uniqKey="Abu Samaha F">F. S. H. Abu-Samaha</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physics & Mathematical Engineering, Faculty of Engineering, Port-Said University</s1><s2>42523 Port-Said</s2><s3>EGY</s3><sZ>3 aut.</sZ></inist:fA14><country>Égypte</country><wicri:noRegion>42523 Port-Said</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="inist">13-0145540</idno><date when="2013">2013</date><idno type="stanalyst">PASCAL 13-0145540 INIST</idno><idno type="RBID">Pascal:13-0145540</idno><idno type="wicri:Area/Main/Corpus">000F71</idno><idno type="wicri:Area/Main/Repository">000794</idno></publicationStmt><seriesStmt><idno type="ISSN">0921-4526</idno><title level="j" type="abbreviated">Physica, B Condens. matter</title><title level="j" type="main">Physica. B, Condensed matter</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorption coefficients</term><term>Carrier density</term><term>Copper additions</term><term>Effective mass</term><term>Impurities</term><term>Indium Thulium Sulfides Mixed</term><term>Lattice parameters</term><term>Monocrystals</term><term>Optical constants</term><term>Permittivity</term><term>Reflectivity</term><term>Refractive index</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Constante optique</term><term>Impureté</term><term>Coefficient absorption</term><term>Facteur réflexion</term><term>Indice réfraction</term><term>Addition cuivre</term><term>Paramètre cristallin</term><term>Constante diélectrique</term><term>Densité porteur charge</term><term>Masse effective</term><term>Indium Thulium Sulfure Mixte</term><term>Monocristal</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Optical properties of Tl<sub>0.995</sub>Cu<sub>0.005</sub>InS<sub>2</sub> single crystals were studied using transmittance and reflectance measurements in the spectral wavelength range of 300-2500 nm. The optical constants (n and k) were calculated at room temperature. The analysis of the spectral behavior of the absorption coefficient in the absorption region revealed indirect transition. The refractive index dispersion data were analyzed in terms of the single oscillator model. Dispersion parameters such as the single oscillator energy (E<sub>o</sub>), the dispersion energy (E<sub>d</sub>), the high frequency dielectric constant (ε∞), the lattice dielectric constant (ε<sub>L</sub>) and the ratio of free charge carrier concentration to the effective mass (N/m<sup>*</sup>) were estimated. The third order nonlinear susceptibility (χ<sup>(3)</sup>) was calculated according to the generalized Miller's rule. Also, the real and imaginary parts of the complex dielectric constant were determined.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0921-4526</s0></fA01><fA03 i2="1"><s0>Physica, B Condens. matter</s0></fA03><fA05><s2>415</s2></fA05><fA08 i1="01" i2="1" l="ENG"><s1>Optical characteristics of Tl<sub>0.995</sub>Cu<sub>0.005</sub>InS<sub>2</sub> single crystals</s1></fA08><fA11 i1="01" i2="1"><s1>EL-NAHASS (M. M.)</s1></fA11><fA11 i1="02" i2="1"><s1>ALI (H. A. M.)</s1></fA11><fA11 i1="03" i2="1"><s1>ABU-SAMAHA (F. S. H.)</s1></fA11><fA14 i1="01"><s1>Department of Physics, Faculty of Education, Ain Shams University, Roxy</s1><s2>11757 Cairo</s2><s3>EGY</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></fA14><fA14 i1="02"><s1>Department of Physics & Mathematical Engineering, Faculty of Engineering, Port-Said University</s1><s2>42523 Port-Said</s2><s3>EGY</s3><sZ>3 aut.</sZ></fA14><fA20><s1>57-61</s1></fA20><fA21><s1>2013</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>145B</s2><s5>354000500605900120</s5></fA43><fA44><s0>0000</s0><s1>© 2013 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>26 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>13-0145540</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Physica. B, Condensed matter</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>Optical properties of Tl<sub>0.995</sub>Cu<sub>0.005</sub>InS<sub>2</sub> single crystals were studied using transmittance and reflectance measurements in the spectral wavelength range of 300-2500 nm. The optical constants (n and k) were calculated at room temperature. The analysis of the spectral behavior of the absorption coefficient in the absorption region revealed indirect transition. The refractive index dispersion data were analyzed in terms of the single oscillator model. Dispersion parameters such as the single oscillator energy (E<sub>o</sub>), the dispersion energy (E<sub>d</sub>), the high frequency dielectric constant (ε∞), the lattice dielectric constant (ε<sub>L</sub>) and the ratio of free charge carrier concentration to the effective mass (N/m<sup>*</sup>) were estimated. The third order nonlinear susceptibility (χ<sup>(3)</sup>) was calculated according to the generalized Miller's rule. Also, the real and imaginary parts of the complex dielectric constant were determined.</s0></fC01><fC02 i1="01" i2="3"><s0>001B70H20C</s0></fC02><fC03 i1="01" i2="3" l="FRE"><s0>Constante optique</s0><s5>02</s5></fC03><fC03 i1="01" i2="3" l="ENG"><s0>Optical constants</s0><s5>02</s5></fC03><fC03 i1="02" i2="3" l="FRE"><s0>Impureté</s0><s5>03</s5></fC03><fC03 i1="02" i2="3" l="ENG"><s0>Impurities</s0><s5>03</s5></fC03><fC03 i1="03" i2="3" l="FRE"><s0>Coefficient absorption</s0><s5>04</s5></fC03><fC03 i1="03" i2="3" l="ENG"><s0>Absorption coefficients</s0><s5>04</s5></fC03><fC03 i1="04" i2="3" l="FRE"><s0>Facteur réflexion</s0><s5>05</s5></fC03><fC03 i1="04" i2="3" l="ENG"><s0>Reflectivity</s0><s5>05</s5></fC03><fC03 i1="05" i2="3" l="FRE"><s0>Indice réfraction</s0><s5>06</s5></fC03><fC03 i1="05" i2="3" l="ENG"><s0>Refractive index</s0><s5>06</s5></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Addition cuivre</s0><s5>07</s5></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Copper additions</s0><s5>07</s5></fC03><fC03 i1="07" i2="3" l="FRE"><s0>Paramètre cristallin</s0><s5>08</s5></fC03><fC03 i1="07" i2="3" l="ENG"><s0>Lattice parameters</s0><s5>08</s5></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Constante diélectrique</s0><s5>09</s5></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Permittivity</s0><s5>09</s5></fC03><fC03 i1="09" i2="3" l="FRE"><s0>Densité porteur charge</s0><s5>12</s5></fC03><fC03 i1="09" i2="3" l="ENG"><s0>Carrier density</s0><s5>12</s5></fC03><fC03 i1="10" i2="3" l="FRE"><s0>Masse effective</s0><s5>13</s5></fC03><fC03 i1="10" i2="3" l="ENG"><s0>Effective mass</s0><s5>13</s5></fC03><fC03 i1="11" i2="X" l="FRE"><s0>Indium Thulium Sulfure Mixte</s0><s2>NC</s2><s2>NA</s2><s5>14</s5></fC03><fC03 i1="11" i2="X" l="ENG"><s0>Indium Thulium Sulfides Mixed</s0><s2>NC</s2><s2>NA</s2><s5>14</s5></fC03><fC03 i1="11" i2="X" l="SPA"><s0>Mixto</s0><s2>NC</s2><s2>NA</s2><s5>14</s5></fC03><fC03 i1="12" i2="3" l="FRE"><s0>Monocristal</s0><s5>15</s5></fC03><fC03 i1="12" i2="3" l="ENG"><s0>Monocrystals</s0><s5>15</s5></fC03><fN21><s1>119</s1></fN21></pA></standard></inist></record>Pour manipuler ce document sous Unix (Dilib)
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