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"Green" Aqueous Synthesis and Advanced Spectral Characterization of Size-Selected Cu₂ZnSnS₄ Nanocrystal Inks.

ABSTRACT: Structure, composition, and optical properties of colloidal mercaptoacetate-stabilized Cu₂ZnSnS₄ (CZTS) nanocrystal inks produced by a "green" method directly in aqueous solutions were characterized. A size-selective precipitation procedure using 2-propanol as a non-solvent allows separating a series of fractions of CZTS nanocrystals with an average size (bandgap) varying from 3 nm (1.72 eV) to 2 nm (2.04 eV). The size-selected CZTS nanocrystals revealed also phonon confinement, with the main phonon mode frequency varying by about 4 cm^-1 between 2 nm and 3 nm NCs.

SUBMITTER: Stroyuk O

PROVIDER: S-EPMC6135749 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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"Green" Aqueous Synthesis and Advanced Spectral Characterization of Size-Selected Cu2ZnSnS4 Nanocrystal Inks.

Stroyuk Oleksandr O Raevskaya Alexandra A Selyshchev Oleksandr O Dzhagan Volodymyr V Gaponik Nikolai N Zahn Dietrich R T DRT Eychmüller Alexander A

Scientific reports 20180912 1

Structure, composition, and optical properties of colloidal mercaptoacetate-stabilized Cu2ZnSnS4 (CZTS) nanocrystal inks produced by a "green" method directly in aqueous solutions were characterized. A size-selective precipitation procedure using 2-propanol as a non-solvent allows separating a series of fractions of CZTS nanocrystals with an average size (bandgap) varying from 3 nm (1.72 eV) to 2 nm (2.04 eV). The size-selected CZTS nanocrystals revealed also phonon confine ...[more]

PMID: 30209288

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