Spectroscopic ellipsometry study of Cu2ZnSnSe4 bulk crystals

Leon Maximo; Levcenko Sergiu; Serna Rosalia; Bodnar Ivan V.; Nateprov Alexander; Guk Maxim; Gurieva Galina; López Nair; Merino Jose Manuel; Caballero Raquel; Schorr S.; Perez-Rodriguez Alejandro

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LEON, Maximo, LEVCENKO, Sergiu, SERNA, Rosalia, BODNAR, Ivan V., NATEPROV, Alexander, GUK, Maxim, GURIEVA, Galina, LÓPEZ, Nair, MERINO, Jose Manuel, CABALLERO, Raquel, SCHORR, S., PEREZ-RODRIGUEZ, Alejandro. Spectroscopic ellipsometry study of Cu2ZnSnSe4 bulk crystals. In: Applied Physics Letters, 2014, vol. 105, p. 0. ISSN 0003-6951. DOI: https://doi.org/10.1063/1.4892548

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Applied Physics Letters

Volumul 105 / 2014 / ISSN 0003-6951 /ISSNe 1077-3118

Spectroscopic ellipsometry study of Cu₂ZnSnSe₄ bulk crystals

DOI:https://doi.org/10.1063/1.4892548

Pag. 0-0

Leon Maximo¹, Levcenko Sergiu², Serna Rosalia³, Bodnar Ivan V.⁴, Nateprov Alexander⁵, Guk Maxim⁵, Gurieva Galina², López Nair¹, Merino Jose Manuel¹, Caballero Raquel¹, Schorr S.²⁶, Perez-Rodriguez Alejandro⁷⁸

¹ Universidad Autónoma de Madrid,
² Helmholtz-Centre Berlin for Materials and Energy,
³ Instituto de Optica, IO, CSIC,
⁴ Belarusian State University of Informatics and Radioelectronics,
⁵ Institute of Applied Physics, Academy of Sciences of Moldova,
⁶ Free University of Berlin, Germany,
⁷ Catalonia Institute for Energy Research (IREC), Barcelona,
⁸ University of Barcelona

Disponibil în IBN: 17 iunie 2023

Rezumat

Using spectroscopic ellipsometry we investigated and analyzed the pseudo-optical constants of Cu₂ZnSnSe₄ bulk crystals, grown by the Bridgman method, over 0.8-4.5 eV photon energy range. The structures found in the spectra of the complex pseudodielectric functions were associated to E₀, E_1A, and E_1B interband transitions and were analyzed in frame of the Adachi's model. The interband transition parameters such as strength, threshold energy, and broadening were evaluated by using the simulated annealing algorithm. In addition, the pseudo-complex refractive index, extinction coefficient, absorption coefficient, and normal-incidence reflectivity were derived over 0.8-4.5 eV photon energy range.

Cuvinte-cheie
Copper compounds, Crystal growth from melt, Photons, refractive index, Selenium compounds, Semiconductor quantum wells, Simulated Annealing, Spectroscopic ellipsometry, Tin compounds

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