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Energy band alignment between Pb(Zr,Ti)O3 and high and low work function conducting oxides-from hole to electron injection

Identifieur interne : 000B70 ( Chine/Analysis ); précédent : 000B69; suivant : 000B71

Energy band alignment between Pb(Zr,Ti)O3 and high and low work function conducting oxides-from hole to electron injection

Auteurs : RBID : Pascal:10-0465618

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English descriptors

Abstract

The interface formation between Pb(Zr,Ti)O3 (PZT) and RuO2 and between PZT and In2O3: Sn (ITO), respectively, was characterized using in situ x-ray photoelectron spectroscopy (XPS). No interface reaction was observed for the interfaces studied. The Fermi level position at the interface (Schottky barrier height) is strongly different for the two electrode materials. A Fermi level position of 1.0 ± 0.1 eV above the valence band maximum (VBM) is observed for the contact between PZT and the high work function oxide RuO2. For the contact between PZT and the low work function oxide ITO a Fermi level position of 2.1 ± 0.2 eV above the VBM is found.

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Pascal:10-0465618

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<title xml:lang="en" level="a">Energy band alignment between Pb(Zr,Ti)O
<sub>3</sub>
and high and low work function conducting oxides-from hole to electron injection</title>
<author>
<name sortKey="Chen, F" uniqKey="Chen F">F. Chen</name>
<affiliation wicri:level="3">
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<s1>Technische Universität Darmstadt, Institute of Materials Science, Petersenstrasse 23</s1>
<s2>64287 Darmstadt</s2>
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<country>Allemagne</country>
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<region type="land" nuts="1">Hesse (Land)</region>
<region type="district" nuts="2">District de Darmstadt</region>
<settlement type="city">Darmstadt</settlement>
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<author>
<name sortKey="Schafranek, R" uniqKey="Schafranek R">R. Schafranek</name>
<affiliation wicri:level="3">
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<s1>Technische Universität Darmstadt, Institute of Materials Science, Petersenstrasse 23</s1>
<s2>64287 Darmstadt</s2>
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<author>
<name sortKey="Li, S" uniqKey="Li S">S. Li</name>
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<s1>Technische Universität Darmstadt, Institute of Materials Science, Petersenstrasse 23</s1>
<s2>64287 Darmstadt</s2>
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<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
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<country>Allemagne</country>
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<region type="land" nuts="1">Hesse (Land)</region>
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<settlement type="city">Darmstadt</settlement>
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<author>
<name sortKey="Wu, W B" uniqKey="Wu W">W. B. Wu</name>
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<s1>Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China</s1>
<s2>Hefei 230026</s2>
<s3>CHN</s3>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>République populaire de Chine</country>
<wicri:noRegion>Hefei 230026</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Klein, A" uniqKey="Klein A">A. Klein</name>
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<s1>Technische Universität Darmstadt, Institute of Materials Science, Petersenstrasse 23</s1>
<s2>64287 Darmstadt</s2>
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<country>Allemagne</country>
<placeName>
<region type="land" nuts="1">Hesse (Land)</region>
<region type="district" nuts="2">District de Darmstadt</region>
<settlement type="city">Darmstadt</settlement>
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<idno type="inist">10-0465618</idno>
<date when="2010">2010</date>
<idno type="stanalyst">PASCAL 10-0465618 INIST</idno>
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<seriesStmt>
<idno type="ISSN">0022-3727</idno>
<title level="j" type="abbreviated">J. phys., D. Appl. phys. : (Print)</title>
<title level="j" type="main">Journal of physics. D, Applied physics : (Print)</title>
</seriesStmt>
</fileDesc>
<profileDesc>
<textClass>
<keywords scheme="KwdEn" xml:lang="en">
<term>Band structure</term>
<term>Barrier height</term>
<term>Electrode material</term>
<term>Electron injection</term>
<term>Electronic structure</term>
<term>Fermi level</term>
<term>Indium oxide</term>
<term>Interface reaction</term>
<term>Interfaces</term>
<term>PZT</term>
<term>Ruthenium oxide</term>
<term>Schottky barriers</term>
<term>Tin oxide</term>
<term>Valence bands</term>
<term>Work functions</term>
<term>X-ray photoelectron spectra</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Structure bande</term>
<term>Travail sortie</term>
<term>Injection électron</term>
<term>Interface</term>
<term>Spectre photoélectron RX</term>
<term>Réaction interface</term>
<term>Niveau Fermi</term>
<term>Structure électronique</term>
<term>Barrière Schottky</term>
<term>Hauteur barrière</term>
<term>Bande valence</term>
<term>PZT</term>
<term>Oxyde de ruthénium</term>
<term>Oxyde d'indium</term>
<term>Oxyde d'étain</term>
<term>Matériau électrode</term>
<term>O Pb Ti Zr</term>
<term>Pb(Zr,Ti)O3</term>
<term>RuO2</term>
<term>In2O3</term>
<term>7330</term>
<term>7115</term>
</keywords>
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<front>
<div type="abstract" xml:lang="en">The interface formation between Pb(Zr,Ti)O
<sub>3</sub>
(PZT) and RuO
<sub>2</sub>
and between PZT and In
<sub>2</sub>
O
<sub>3</sub>
: Sn (ITO), respectively, was characterized using in situ x-ray photoelectron spectroscopy (XPS). No interface reaction was observed for the interfaces studied. The Fermi level position at the interface (Schottky barrier height) is strongly different for the two electrode materials. A Fermi level position of 1.0 ± 0.1 eV above the valence band maximum (VBM) is observed for the contact between PZT and the high work function oxide RuO
<sub>2</sub>
. For the contact between PZT and the low work function oxide ITO a Fermi level position of 2.1 ± 0.2 eV above the VBM is found.</div>
</front>
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<sub>3</sub>
and high and low work function conducting oxides-from hole to electron injection</s1>
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<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
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<s1>Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China</s1>
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<s0>The interface formation between Pb(Zr,Ti)O
<sub>3</sub>
(PZT) and RuO
<sub>2</sub>
and between PZT and In
<sub>2</sub>
O
<sub>3</sub>
: Sn (ITO), respectively, was characterized using in situ x-ray photoelectron spectroscopy (XPS). No interface reaction was observed for the interfaces studied. The Fermi level position at the interface (Schottky barrier height) is strongly different for the two electrode materials. A Fermi level position of 1.0 ± 0.1 eV above the valence band maximum (VBM) is observed for the contact between PZT and the high work function oxide RuO
<sub>2</sub>
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<s0>Travail sortie</s0>
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<s0>Work functions</s0>
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<s0>Injection électron</s0>
<s5>03</s5>
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<s0>Electron injection</s0>
<s5>03</s5>
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<s5>03</s5>
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<s0>Interface</s0>
<s5>04</s5>
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<s0>Schottky barriers</s0>
<s5>09</s5>
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<s0>Hauteur barrière</s0>
<s5>10</s5>
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<s0>Barrier height</s0>
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<fC03 i1="11" i2="3" l="FRE">
<s0>Bande valence</s0>
<s5>11</s5>
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<s5>11</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE">
<s0>PZT</s0>
<s2>NK</s2>
<s5>15</s5>
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<s0>PZT</s0>
<s2>NK</s2>
<s5>15</s5>
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<s0>Oxyde de ruthénium</s0>
<s5>16</s5>
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<s5>16</s5>
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<s0>Oxyde d'indium</s0>
<s5>17</s5>
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<s0>Indium oxide</s0>
<s5>17</s5>
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<s0>Indio óxido</s0>
<s5>17</s5>
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<s5>18</s5>
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<s0>Tin oxide</s0>
<s5>18</s5>
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<s0>Estaño óxido</s0>
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<s0>Material electrodo</s0>
<s5>19</s5>
</fC03>
<fC03 i1="17" i2="3" l="FRE">
<s0>O Pb Ti Zr</s0>
<s4>INC</s4>
<s5>46</s5>
</fC03>
<fC03 i1="18" i2="3" l="FRE">
<s0>Pb(Zr,Ti)O3</s0>
<s4>INC</s4>
<s5>47</s5>
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<s4>INC</s4>
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<s0>7330</s0>
<s4>INC</s4>
<s5>71</s5>
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<s0>7115</s0>
<s4>INC</s4>
<s5>73</s5>
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<fN21>
<s1>305</s1>
</fN21>
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