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This research was supported by the H2020 programme under the project INFINITE -CELL (H2020-MSCA-RISE-2017-777968) . The authors appreciate also the financial support from the Institutional Project ANCD 20.80009.5007.03. The authors thank Dr. M. Guc for useful discussions.

Analysis of institutional authors

Caballero, RAuthorMerino, JmAuthorLeon, MAuthor

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August 29, 2022
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Spectroscopic ellipsometry study of Cu2Zn(GexSi(1-x))Se-4 bulk poly-crystals

Publicated to:SOLID STATE SCIENCES. 132 - 2022-01-01 132(), DOI: 10.1016/j.solidstatesciences.2022.106982

Authors: Hajdeu-Chicarosh, Elena; Levcenko, Sergiu; Serna, Rosalia; Bodnar, Ivan V.; Victorov, Ivan A.; Iaseniuc, Oxana; Caballero, Raquel; Merino, Jose Manuel; Arushanov, Ernest; Leon, Maximo;

Affiliations

Inst Opt, Laser Proc Grp, IO CSIC, Serrano 121, Madrid 28006, Spain - Author
Moldavian Acad Sci, Inst Appl Phys, Academiei 5, Kishinev MD 2028, Moldova - Author
Univ Autonoma Madrid, Dept Appl Phys, C-Francisco Tomas & Valiente 7, Madrid 28049, Spain - Author
Univ Leipzig, Felix Bloch Inst Solid State Phys, Linne Str 5, D-04103 Leipzig, Germany - Author

Abstract

The present study addresses to the synthesis and determination of the dielectric function of Cu2Zn(GexSi1-x)Se-4 solid solutions with x = 0.4 and 0.8 over the range 1-4.5 eV by spectroscopic ellipsometry analysis, with the aim to achieve a suitable band gap tuning. The dielectric function of the samples is determined using the Adachi model. From the analysis the lowest E-0 transition and high energy E-1A and E-1B transitions are identified. It is found that the band gap varies nonlinearly on composition in the Cu2Zn(GexSi1-x)Se-4 alloys and band gap values as large as 1.87 eV are obtained. These results are essential for the design of efficient tailored photovoltaic solar cells and show the high potential of the kesterite compounds for the development of low-cost sustainable future solar cells.

Keywords

AlloysBand-gap tuningBand-gap valuesChemistryConstantsCu2zn(gexsi1-x)se-4 alloysCu2zn(gexsi1-x)se4 alloyCu2zn(gexsi1-x)se4 alloysCu2znsn(sxse1-x)(4)Cugase2Dielectric functionsEllipsometryEnergyEnergy gapGeHigh potentialKesteriteKesteritesLow-costsOptical spectroscopyOptical-propertiesPhotovoltaic solar cellsPolycrystalsRamanRaman spectroscopySingle-crystalsSolar cellsSolar power generationSolar-cellsSpectroscopic analysisSpectroscopic ellipsometry

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal SOLID STATE SCIENCES due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2022, it was in position 12/42, thus managing to position itself as a Q2 (Segundo Cuartil), in the category Chemistry, Inorganic & Nuclear. Notably, the journal is positioned en el Cuartil Q2 para la agencia Scopus (SJR) en la categoría Chemistry (Miscellaneous).

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-08-05:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 3 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Germany; Moldova.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: Last Author (LEON MACARRON, MAXIMO).