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The structural and electrical properties of the SrTa2O6/In0.53Ga0.47As/InP system

Identifieur interne : 002281 ( Main/Repository ); précédent : 002280; suivant : 002282

The structural and electrical properties of the SrTa2O6/In0.53Ga0.47As/InP system

Auteurs : RBID : Pascal:11-0305344

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English descriptors

Abstract

The structural and electrical properties of SrTa2O6(SrTaO)/n-In0.53GaAs0.47(InGaAs)/InP structures where the SrTaO was grown by atomic vapor deposition, were investigated. Transmission electron microscopy revealed a uniform, amorphous SrTaO film having an atomically flat interface with the InGaAs substrate with a SrTaO film thickness of 11.2 nm. The amorphous SrTaO films (11.2 nm) exhibit a dielectric constant of ∼20, and a breakdown field of >8 MV/cm. A capacitance equivalent thickness of ∼1 nm is obtained for a SrTaO thickness of 3.4 nm, demonstrating the scaling potential of the SrTaO/InGaAs MOS system. Thinner SrTaO films (3.4 nm) exhibited increased non-uniformity in thickness. From the capacitance-voltage response of the SrTaO (3.4 nm)/n-InGaAs/InP structure, prior to any post deposition annealing, a peak interface state density of ∼2.3 x 1013 cm eV-1 is obtained located at ∼0.28 eV (±0.05 eV) above the valence band energy (Ev) and the integrated interface state density in range Ev + 0.2 to Ev + 0.7 eV is 6.8 x 1012 cm-2. The peak energy position (0.28 ± 0.05 eV) and the energy distribution of the interface states are similar to other high-k layers on InGaAs, such as Al2O3 and LaAlO3, providing further evidence that the interface defects in the high-k/InGaAs system are intrinsic defects related to the InGaAs surface.

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Pascal:11-0305344

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<title xml:lang="en" level="a">The structural and electrical properties of the SrTa
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<idno type="RBID">Pascal:11-0305344</idno>
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<term>Alumina</term>
<term>Amorphous material</term>
<term>Annealing</term>
<term>Binary compounds</term>
<term>CV characteristic</term>
<term>Capacitance</term>
<term>Damage</term>
<term>Density of states</term>
<term>Electrical characteristic</term>
<term>Electrical properties</term>
<term>Energy distribution</term>
<term>Gallium compounds</term>
<term>High k dielectric</term>
<term>III-V semiconductors</term>
<term>Indium</term>
<term>Indium phosphide</term>
<term>Interface defect</term>
<term>Interface electron state</term>
<term>Interface states</term>
<term>Interfaces</term>
<term>Lanthanum aluminate</term>
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<term>Permittivity</term>
<term>Scaling laws</term>
<term>Strontium</term>
<term>Thickness</term>
<term>Transmission electron microscopy</term>
<term>Valence bands</term>
<term>Vapor deposition</term>
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<term>Caractéristique électrique</term>
<term>Propriété électrique</term>
<term>Dépôt phase vapeur</term>
<term>Microscopie électronique transmission</term>
<term>Epaisseur</term>
<term>Constante diélectrique</term>
<term>Endommagement</term>
<term>Capacité électrique</term>
<term>Loi échelle</term>
<term>Caractéristique capacité tension</term>
<term>Recuit</term>
<term>Densité état</term>
<term>Etat interface</term>
<term>Etat électronique interface</term>
<term>Bande valence</term>
<term>Distribution énergie</term>
<term>Défaut interface</term>
<term>Structure MIS</term>
<term>Composé du gallium</term>
<term>Courant fuite</term>
<term>Phosphure d'indium</term>
<term>Composé binaire</term>
<term>Matériau amorphe</term>
<term>Interface</term>
<term>Diélectrique permittivité élevée</term>
<term>Alumine</term>
<term>Aluminate de lanthane</term>
<term>Strontium</term>
<term>Semiconducteur III-V</term>
<term>Indium</term>
<term>InP</term>
<term>Al2O3</term>
<term>LaAlO3</term>
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<front>
<div type="abstract" xml:lang="en">The structural and electrical properties of SrTa
<sub>2</sub>
O
<sub>6</sub>
(SrTaO)/n-In
<sub>0.53</sub>
GaAs
<sub>0.47</sub>
(InGaAs)/InP structures where the SrTaO was grown by atomic vapor deposition, were investigated. Transmission electron microscopy revealed a uniform, amorphous SrTaO film having an atomically flat interface with the InGaAs substrate with a SrTaO film thickness of 11.2 nm. The amorphous SrTaO films (11.2 nm) exhibit a dielectric constant of ∼20, and a breakdown field of >8 MV/cm. A capacitance equivalent thickness of ∼1 nm is obtained for a SrTaO thickness of 3.4 nm, demonstrating the scaling potential of the SrTaO/InGaAs MOS system. Thinner SrTaO films (3.4 nm) exhibited increased non-uniformity in thickness. From the capacitance-voltage response of the SrTaO (3.4 nm)/n-InGaAs/InP structure, prior to any post deposition annealing, a peak interface state density of ∼2.3 x 10
<sup>13 </sup>
cm eV
<sup>-1</sup>
is obtained located at ∼0.28 eV (±0.05 eV) above the valence band energy (E
<sub>v</sub>
) and the integrated interface state density in range E
<sub>v</sub>
+ 0.2 to E
<sub>v</sub>
+ 0.7 eV is 6.8 x 10
<sup>12</sup>
cm
<sup>-2</sup>
. The peak energy position (0.28 ± 0.05 eV) and the energy distribution of the interface states are similar to other high-k layers on InGaAs, such as Al
<sub>2</sub>
O
<sub>3</sub>
and LaAlO
<sub>3</sub>
, providing further evidence that the interface defects in the high-k/InGaAs system are intrinsic defects related to the InGaAs surface.</div>
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<s0>The structural and electrical properties of SrTa
<sub>2</sub>
O
<sub>6</sub>
(SrTaO)/n-In
<sub>0.53</sub>
GaAs
<sub>0.47</sub>
(InGaAs)/InP structures where the SrTaO was grown by atomic vapor deposition, were investigated. Transmission electron microscopy revealed a uniform, amorphous SrTaO film having an atomically flat interface with the InGaAs substrate with a SrTaO film thickness of 11.2 nm. The amorphous SrTaO films (11.2 nm) exhibit a dielectric constant of ∼20, and a breakdown field of >8 MV/cm. A capacitance equivalent thickness of ∼1 nm is obtained for a SrTaO thickness of 3.4 nm, demonstrating the scaling potential of the SrTaO/InGaAs MOS system. Thinner SrTaO films (3.4 nm) exhibited increased non-uniformity in thickness. From the capacitance-voltage response of the SrTaO (3.4 nm)/n-InGaAs/InP structure, prior to any post deposition annealing, a peak interface state density of ∼2.3 x 10
<sup>13 </sup>
cm eV
<sup>-1</sup>
is obtained located at ∼0.28 eV (±0.05 eV) above the valence band energy (E
<sub>v</sub>
) and the integrated interface state density in range E
<sub>v</sub>
+ 0.2 to E
<sub>v</sub>
+ 0.7 eV is 6.8 x 10
<sup>12</sup>
cm
<sup>-2</sup>
. The peak energy position (0.28 ± 0.05 eV) and the energy distribution of the interface states are similar to other high-k layers on InGaAs, such as Al
<sub>2</sub>
O
<sub>3</sub>
and LaAlO
<sub>3</sub>
, providing further evidence that the interface defects in the high-k/InGaAs system are intrinsic defects related to the InGaAs surface.</s0>
</fC01>
<fC02 i1="01" i2="3">
<s0>001B80A15K</s0>
</fC02>
<fC02 i1="02" i2="3">
<s0>001B70G22C</s0>
</fC02>
<fC02 i1="03" i2="X">
<s0>001D11G05</s0>
</fC02>
<fC02 i1="04" i2="X">
<s0>001D11C02A</s0>
</fC02>
<fC02 i1="05" i2="X">
<s0>240</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE">
<s0>Caractéristique électrique</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG">
<s0>Electrical characteristic</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="GER">
<s0>Elektrische Groesse</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA">
<s0>Característica eléctrica</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="3" l="FRE">
<s0>Propriété électrique</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="3" l="ENG">
<s0>Electrical properties</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="3" l="FRE">
<s0>Dépôt phase vapeur</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="3" l="ENG">
<s0>Vapor deposition</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="3" l="FRE">
<s0>Microscopie électronique transmission</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="3" l="ENG">
<s0>Transmission electron microscopy</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE">
<s0>Epaisseur</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG">
<s0>Thickness</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="3" l="FRE">
<s0>Constante diélectrique</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="3" l="ENG">
<s0>Permittivity</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE">
<s0>Endommagement</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG">
<s0>Damage</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="3" l="FRE">
<s0>Capacité électrique</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="3" l="ENG">
<s0>Capacitance</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="3" l="FRE">
<s0>Loi échelle</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="3" l="ENG">
<s0>Scaling laws</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="3" l="FRE">
<s0>Caractéristique capacité tension</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="3" l="ENG">
<s0>CV characteristic</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE">
<s0>Recuit</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="3" l="ENG">
<s0>Annealing</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE">
<s0>Densité état</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG">
<s0>Density of states</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="GER">
<s0>Zustandsdichte</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA">
<s0>Densidad estado</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="3" l="FRE">
<s0>Etat interface</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="3" l="ENG">
<s0>Interface states</s0>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE">
<s0>Etat électronique interface</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG">
<s0>Interface electron state</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="SPA">
<s0>Estado electrónico interfase</s0>
<s5>14</s5>
</fC03>
<fC03 i1="15" i2="3" l="FRE">
<s0>Bande valence</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="3" l="ENG">
<s0>Valence bands</s0>
<s5>15</s5>
</fC03>
<fC03 i1="16" i2="X" l="FRE">
<s0>Distribution énergie</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="ENG">
<s0>Energy distribution</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="SPA">
<s0>Distribución energía</s0>
<s5>16</s5>
</fC03>
<fC03 i1="17" i2="3" l="FRE">
<s0>Défaut interface</s0>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="3" l="ENG">
<s0>Interface defect</s0>
<s5>17</s5>
</fC03>
<fC03 i1="18" i2="3" l="FRE">
<s0>Structure MIS</s0>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="3" l="ENG">
<s0>MIS structures</s0>
<s5>18</s5>
</fC03>
<fC03 i1="19" i2="3" l="FRE">
<s0>Composé du gallium</s0>
<s5>19</s5>
</fC03>
<fC03 i1="19" i2="3" l="ENG">
<s0>Gallium compounds</s0>
<s5>19</s5>
</fC03>
<fC03 i1="20" i2="3" l="FRE">
<s0>Courant fuite</s0>
<s5>20</s5>
</fC03>
<fC03 i1="20" i2="3" l="ENG">
<s0>Leakage currents</s0>
<s5>20</s5>
</fC03>
<fC03 i1="21" i2="X" l="FRE">
<s0>Phosphure d'indium</s0>
<s5>22</s5>
</fC03>
<fC03 i1="21" i2="X" l="ENG">
<s0>Indium phosphide</s0>
<s5>22</s5>
</fC03>
<fC03 i1="21" i2="X" l="GER">
<s0>Indiumphosphid</s0>
<s5>22</s5>
</fC03>
<fC03 i1="21" i2="X" l="SPA">
<s0>Indio fosfuro</s0>
<s5>22</s5>
</fC03>
<fC03 i1="22" i2="3" l="FRE">
<s0>Composé binaire</s0>
<s5>23</s5>
</fC03>
<fC03 i1="22" i2="3" l="ENG">
<s0>Binary compounds</s0>
<s5>23</s5>
</fC03>
<fC03 i1="23" i2="X" l="FRE">
<s0>Matériau amorphe</s0>
<s5>24</s5>
</fC03>
<fC03 i1="23" i2="X" l="ENG">
<s0>Amorphous material</s0>
<s5>24</s5>
</fC03>
<fC03 i1="23" i2="X" l="SPA">
<s0>Material amorfo</s0>
<s5>24</s5>
</fC03>
<fC03 i1="24" i2="3" l="FRE">
<s0>Interface</s0>
<s5>25</s5>
</fC03>
<fC03 i1="24" i2="3" l="ENG">
<s0>Interfaces</s0>
<s5>25</s5>
</fC03>
<fC03 i1="25" i2="X" l="FRE">
<s0>Diélectrique permittivité élevée</s0>
<s5>26</s5>
</fC03>
<fC03 i1="25" i2="X" l="ENG">
<s0>High k dielectric</s0>
<s5>26</s5>
</fC03>
<fC03 i1="25" i2="X" l="SPA">
<s0>Dieléctrico alta constante dieléctrica</s0>
<s5>26</s5>
</fC03>
<fC03 i1="26" i2="3" l="FRE">
<s0>Alumine</s0>
<s5>27</s5>
</fC03>
<fC03 i1="26" i2="3" l="ENG">
<s0>Alumina</s0>
<s5>27</s5>
</fC03>
<fC03 i1="27" i2="X" l="FRE">
<s0>Aluminate de lanthane</s0>
<s5>28</s5>
</fC03>
<fC03 i1="27" i2="X" l="ENG">
<s0>Lanthanum aluminate</s0>
<s5>28</s5>
</fC03>
<fC03 i1="27" i2="X" l="GER">
<s0>Lanthanaluminat</s0>
<s5>28</s5>
</fC03>
<fC03 i1="27" i2="X" l="SPA">
<s0>Lantano aluminato</s0>
<s5>28</s5>
</fC03>
<fC03 i1="28" i2="3" l="FRE">
<s0>Strontium</s0>
<s2>NC</s2>
<s5>29</s5>
</fC03>
<fC03 i1="28" i2="3" l="ENG">
<s0>Strontium</s0>
<s2>NC</s2>
<s5>29</s5>
</fC03>
<fC03 i1="29" i2="3" l="FRE">
<s0>Semiconducteur III-V</s0>
<s5>31</s5>
</fC03>
<fC03 i1="29" i2="3" l="ENG">
<s0>III-V semiconductors</s0>
<s5>31</s5>
</fC03>
<fC03 i1="30" i2="3" l="FRE">
<s0>Indium</s0>
<s2>NC</s2>
<s5>32</s5>
</fC03>
<fC03 i1="30" i2="3" l="ENG">
<s0>Indium</s0>
<s2>NC</s2>
<s5>32</s5>
</fC03>
<fC03 i1="31" i2="3" l="FRE">
<s0>InP</s0>
<s4>INC</s4>
<s5>82</s5>
</fC03>
<fC03 i1="32" i2="3" l="FRE">
<s0>Al2O3</s0>
<s4>INC</s4>
<s5>83</s5>
</fC03>
<fC03 i1="33" i2="3" l="FRE">
<s0>LaAlO3</s0>
<s4>INC</s4>
<s5>84</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE">
<s0>Composé III-V</s0>
<s5>21</s5>
</fC07>
<fC07 i1="01" i2="X" l="ENG">
<s0>III-V compound</s0>
<s5>21</s5>
</fC07>
<fC07 i1="01" i2="X" l="SPA">
<s0>Compuesto III-V</s0>
<s5>21</s5>
</fC07>
<fN21>
<s1>206</s1>
</fN21>
<fN44 i1="01">
<s1>OTO</s1>
</fN44>
<fN82>
<s1>OTO</s1>
</fN82>
</pA>
<pR>
<fA30 i1="01" i2="1" l="ENG">
<s1>International Conference on Insulating Films on Semiconductors</s1>
<s2>17</s2>
<s3>Grenoble FRA</s3>
<s4>2011-06-21</s4>
</fA30>
</pR>
</standard>
</inist>
</record>

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