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Chemical compositional non-uniformity and its effects on CIGS solar cell performance at the nm-scale

Identifieur interne : 001F44 ( Main/Repository ); précédent : 001F43; suivant : 001F45

Chemical compositional non-uniformity and its effects on CIGS solar cell performance at the nm-scale

Auteurs : RBID : Pascal:12-0090005

Descripteurs français

Pascal (Inist)
- Distribution non uniforme, Cellule solaire, Evaluation performance, Uniformité, Faisceau ionique, Microscope transmission, Microscope électronique, Microscopie électronique, Microscopie électronique transmission, Monocristal, Croissance grain, EBIC, Préparation échantillon, Taux conversion, Séléniure de cuivre, Séléniure de gallium, Séléniure d'indium, Composé quaternaire, Couche mince, Cu(In,Ga)Se2.

English descriptors

KwdEn :
- Conversion rate, Copper selenides, EBIC, Electron microscope, Electron microscopy, Gallium selenides, Grain growth, Indium selenides, Ion beam, Non uniform distribution, Performance evaluation, Quaternary compound, Sample preparation, Single crystal, Solar cell, Thin film, Transmission electron microscopy, Transmission microscope, Uniformity.

Abstract

Compositional uniformity of Cu(In,Ga)Se₂ (CIGS) solar cells was studied, using thin cross sections of complete cells prepared by focused ion beam (FIB) and examined in the transmission electron microscope (TEM). This methodology revealed the compositional variations at the nm-scale. The Ga and In compositions vary not only between neighboring grains, but also inside individual single crystal grains along their growth direction, which explains the electrical non-uniformity seen in electron beam-induced current (EBIC) measurements. The improved compositional uniformity with increase in sample preparation temperature correlates with higher solar cell efficiency.

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Le document en format XML

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<author><name>WENJIE LI</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Materials and Interfaces, Weizmann Institute of Science</s1>
<s2>Rehovot Israel</s2>
<s3>ISR</s3>
<sZ>1 aut.</sZ>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Israël</country>
<wicri:noRegion>Rehovot Israel</wicri:noRegion>
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</author>
<author><name sortKey="Cohen, Sidney" uniqKey="Cohen S">Sidney Cohen</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemical Research Support, Weizmann Institute of Science</s1>
<s2>Rehovot Israel</s2>
<s3>ISR</s3>
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<country>Israël</country>
<wicri:noRegion>Rehovot Israel</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Gartsman, Konstantin" uniqKey="Gartsman K">Konstantin Gartsman</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemical Research Support, Weizmann Institute of Science</s1>
<s2>Rehovot Israel</s2>
<s3>ISR</s3>
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<author><name sortKey="Caballero, Raquel" uniqKey="Caballero R">Raquel Caballero</name>
<affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1</s1>
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<country>Allemagne</country>
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<settlement type="city">Berlin</settlement>
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</author>
<author><name sortKey="Van Huth, Palle" uniqKey="Van Huth P">Palle Van Huth</name>
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<author><name sortKey="Popovitz Biro, Ronit" uniqKey="Popovitz Biro R">Ronit Popovitz-Biro</name>
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<sZ>3 aut.</sZ>
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<country>Israël</country>
<wicri:noRegion>Rehovot Israel</wicri:noRegion>
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<author><name sortKey="Cahen, David" uniqKey="Cahen D">David Cahen</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Materials and Interfaces, Weizmann Institute of Science</s1>
<s2>Rehovot Israel</s2>
<s3>ISR</s3>
<sZ>1 aut.</sZ>
<sZ>7 aut.</sZ>
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<country>Israël</country>
<wicri:noRegion>Rehovot Israel</wicri:noRegion>
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<publicationStmt><idno type="inist">12-0090005</idno>
<date when="2012">2012</date>
<idno type="stanalyst">PASCAL 12-0090005 INIST</idno>
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<idno type="wicri:Area/Main/Corpus">002201</idno>
<idno type="wicri:Area/Main/Repository">001F44</idno>
</publicationStmt>
<seriesStmt><idno type="ISSN">0927-0248</idno>
<title level="j" type="abbreviated">Sol. energy mater. sol. cells</title>
<title level="j" type="main">Solar energy materials and solar cells</title>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Conversion rate</term>
<term>Copper selenides</term>
<term>EBIC</term>
<term>Electron microscope</term>
<term>Electron microscopy</term>
<term>Gallium selenides</term>
<term>Grain growth</term>
<term>Indium selenides</term>
<term>Ion beam</term>
<term>Non uniform distribution</term>
<term>Performance evaluation</term>
<term>Quaternary compound</term>
<term>Sample preparation</term>
<term>Single crystal</term>
<term>Solar cell</term>
<term>Thin film</term>
<term>Transmission electron microscopy</term>
<term>Transmission microscope</term>
<term>Uniformity</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Distribution non uniforme</term>
<term>Cellule solaire</term>
<term>Evaluation performance</term>
<term>Uniformité</term>
<term>Faisceau ionique</term>
<term>Microscope transmission</term>
<term>Microscope électronique</term>
<term>Microscopie électronique</term>
<term>Microscopie électronique transmission</term>
<term>Monocristal</term>
<term>Croissance grain</term>
<term>EBIC</term>
<term>Préparation échantillon</term>
<term>Taux conversion</term>
<term>Séléniure de cuivre</term>
<term>Séléniure de gallium</term>
<term>Séléniure d'indium</term>
<term>Composé quaternaire</term>
<term>Couche mince</term>
<term>Cu(In,Ga)Se2</term>
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<front><div type="abstract" xml:lang="en">Compositional uniformity of Cu(In,Ga)Se<sub>2</sub>
 (CIGS) solar cells was studied, using thin cross sections of complete cells prepared by focused ion beam (FIB) and examined in the transmission electron microscope (TEM). This methodology revealed the compositional variations at the nm-scale. The Ga and In compositions vary not only between neighboring grains, but also inside individual single crystal grains along their growth direction, which explains the electrical non-uniformity seen in electron beam-induced current (EBIC) measurements. The improved compositional uniformity with increase in sample preparation temperature correlates with higher solar cell efficiency.</div>
</front>
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<fA11 i1="01" i2="1"><s1>WENJIE LI</s1>
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<fA11 i1="02" i2="1"><s1>COHEN (Sidney)</s1>
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<fA14 i1="01"><s1>Department of Materials and Interfaces, Weizmann Institute of Science</s1>
<s2>Rehovot Israel</s2>
<s3>ISR</s3>
<sZ>1 aut.</sZ>
<sZ>7 aut.</sZ>
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<fA14 i1="02"><s1>Department of Chemical Research Support, Weizmann Institute of Science</s1>
<s2>Rehovot Israel</s2>
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<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
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<fA14 i1="03"><s1>Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1</s1>
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<fC01 i1="01" l="ENG"><s0>Compositional uniformity of Cu(In,Ga)Se<sub>2</sub>
 (CIGS) solar cells was studied, using thin cross sections of complete cells prepared by focused ion beam (FIB) and examined in the transmission electron microscope (TEM). This methodology revealed the compositional variations at the nm-scale. The Ga and In compositions vary not only between neighboring grains, but also inside individual single crystal grains along their growth direction, which explains the electrical non-uniformity seen in electron beam-induced current (EBIC) measurements. The improved compositional uniformity with increase in sample preparation temperature correlates with higher solar cell efficiency.</s0>
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Chemical compositional non-uniformity and its effects on CIGS solar cell performance at the nm-scale

Chemical compositional non-uniformity and its effects on CIGS solar cell performance at the nm-scale

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