Spectroscopic ellipsometry study of Cu2ZnSn(SxSe1-x)4 bulk polycrystals
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LEVCENKO, Sergiu; HAJDEU-CHICAROSH, Elena; SERNA, R; GUK, Maxim; VICTOROV, Ivan; NATEPROV, Alexandr; BODNAR, Ivan V.; CABALLERO, Raquel; MERINO, Jose Manuel; ARUSHANOV, Ernest; LEON, Maximo. Spectroscopic ellipsometry study of Cu2ZnSn(SxSe1-x)4 bulk polycrystals. In: Journal of Alloys and Compounds. 2020, nr. 843, p. 0. ISSN 0925-8388.
10.1016/j.jallcom.2020.156013
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Journal of Alloys and Compounds
Numărul 843 / 2020 / ISSN 0925-8388

Spectroscopic ellipsometry study of Cu2ZnSn(SxSe1-x)4 bulk polycrystals


DOI: 10.1016/j.jallcom.2020.156013
Pag. 0-0

Levcenko Sergiu1, Hajdeu-Chicarosh Elena23, Serna R4, Guk Maxim25, Victorov Ivan6, Nateprov Alexandr2, Bodnar Ivan V.6, Caballero Raquel7, Merino Jose Manuel7, Arushanov Ernest2, Leon Maximo7
 
1 Helmholtz-Centre Berlin for Materials and Energy,
2 Institute of Applied Physics,
3 SunGa Ltd., Ceadir-Lunga,
4 Instituto de Optica, IO, CSIC,
5 Catalonia Institute for Energy Research (IREC), Barcelona,
6 Belarusian State University of Informatics and Radioelectronics,
7 Universidad Autónoma de Madrid
 
Disponibil în IBN: 17 septembrie 2020


Rezumat

The pseudo dielectric function of Cu2ZnSn(SxSe1-x)4 [x = 0.35, 0.62, 0.81] bulk polycrystals is determined over the range 1.1–4.6 eV at room temperature from the analysis of spectroscopic ellipsometry data using the Adachi model. From the analysis, the lowest E0 transition and high energy E1A and E1B transitions are clearly identified, and used to follow the evolution of the pseudo dielectric function as a function of the composition. It is shown that the fundamental E0 and high energy E1A transitions can be tuned by increasing the sulfur content over a range of 0.3 eV. These results show the potential of the kesterite compounds for the design of efficient tailored photovoltaic solar cells.

Cuvinte-cheie
Cu2 Znsns4, kesterite, Copper Zinc Tin Sulfide