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Room-temperature facile synthesis of hexagonal NaYF4 and NaYF4: Yb, Er powder without any organic additives and its upconversion fluorescence properties. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.11.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Dzhagan V, Kapush O, Mazur N, Havryliuk Y, Danylenko MI, Budzulyak S, Yukhymchuk V, Valakh M, Litvinchuk AP, Zahn DRT. Colloidal Cu-Zn-Sn-Te Nanocrystals: Aqueous Synthesis and Raman Spectroscopy Study. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2923. [PMID: 34835686 PMCID: PMC8624267 DOI: 10.3390/nano11112923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/21/2021] [Accepted: 10/27/2021] [Indexed: 11/17/2022]
Abstract
Cu-Zn-Sn-Te (CZTTe) is an inexpensive quaternary semiconductor that has not been investigated so far, unlike its intensively studied CZTS and CZTSe counterparts, although it may potentially have desirable properties for solar energy conversion, thermoelectric, and other applications. Here, we report on the synthesis of CZTTe nanocrystals (NCs) via an original low-cost, low-temperature colloidal synthesis in water, using a small-molecule stabilizer, thioglycolic acid. The absorption edge at about 0.8-0.9 eV agrees well with the value expected for Cu2ZnSnTe4, thus suggesting CZTTe to be an affordable alternative for IR photodetectors and solar cells. As the main method of structural characterization multi-wavelength resonant Raman spectroscopy was used complemented by TEM, XRD, XPS as well as UV-vis and IR absorption spectroscopy. The experimental study is supported by first principles density functional calculations of the electronic structure and phonon spectra. Even though the composition of NCs exhibits a noticeable deviation from the Cu2ZnSnTe4 stoichiometry, a common feature of multinary NCs synthesized in water, the Raman spectra reveal very small widths of the main phonon peak and also multi-phonon scattering processes up to the fourth order. These factors imply a very good crystallinity of the NCs, which is further confirmed by high-resolution TEM.
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Affiliation(s)
- Volodymyr Dzhagan
- V. Lashkaryov Institute of Semiconductors Physics, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine; (V.D.); (O.K.); (N.M.); (Y.H.); (S.B.); (V.Y.); (M.V.)
- Physics Department, Taras Shevchenko National University of Kiev, 01601 Kyiv, Ukraine
| | - Olga Kapush
- V. Lashkaryov Institute of Semiconductors Physics, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine; (V.D.); (O.K.); (N.M.); (Y.H.); (S.B.); (V.Y.); (M.V.)
| | - Nazar Mazur
- V. Lashkaryov Institute of Semiconductors Physics, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine; (V.D.); (O.K.); (N.M.); (Y.H.); (S.B.); (V.Y.); (M.V.)
| | - Yevhenii Havryliuk
- V. Lashkaryov Institute of Semiconductors Physics, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine; (V.D.); (O.K.); (N.M.); (Y.H.); (S.B.); (V.Y.); (M.V.)
- Semiconductor Physics, Institute of Physics, Chemnitz University of Technology, 09107 Chemnitz, Germany
- Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Chemnitz University of Technology, 09107 Chemnitz, Germany
| | - Mykola I. Danylenko
- Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 03142 Kyiv, Ukraine;
| | - Serhiy Budzulyak
- V. Lashkaryov Institute of Semiconductors Physics, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine; (V.D.); (O.K.); (N.M.); (Y.H.); (S.B.); (V.Y.); (M.V.)
| | - Volodymyr Yukhymchuk
- V. Lashkaryov Institute of Semiconductors Physics, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine; (V.D.); (O.K.); (N.M.); (Y.H.); (S.B.); (V.Y.); (M.V.)
| | - Mykhailo Valakh
- V. Lashkaryov Institute of Semiconductors Physics, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine; (V.D.); (O.K.); (N.M.); (Y.H.); (S.B.); (V.Y.); (M.V.)
| | - Alexander P. Litvinchuk
- Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204-5002, USA;
| | - Dietrich R. T. Zahn
- Semiconductor Physics, Institute of Physics, Chemnitz University of Technology, 09107 Chemnitz, Germany
- Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Chemnitz University of Technology, 09107 Chemnitz, Germany
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Catalano PN, Chaudhary RG, Desimone MF, Santo-Orihuela PL. A Survey on Analytical Methods for the Characterization of Green Synthesized Nanomaterials. Curr Pharm Biotechnol 2021; 22:823-847. [PMID: 33397235 DOI: 10.2174/1389201022666210104122349] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 11/03/2020] [Accepted: 11/12/2020] [Indexed: 11/22/2022]
Abstract
Nowadays, nanotechnologies are well established and the uses of a great variety of nanomaterials show exponential growth. The development of green synthesis procedures experienced a great development thanks to the contribution of researchers of diverse origins. The versatility of green chemistry allows producing a wide range of organic and inorganic nanomaterials with numerous promising applications. In all cases, it is of paramount importance to carefully characterize the resulting nanomaterials because their properties will determine their correct performance to accomplish the function to which they were synthesized or even their detrimental effects like nanotoxicological behavior. This review provides an overview of frequently employed characterization methods and their applications for green synthesized nanomaterials. However, while several different nanoscale materials and their associated green construction methodology are being developed, other important techniques would be extensively incorporated into this field soon. The aim is to encourage researchers in the field to employ a variety of these techniques for achieving an exhaustive characterization of new nanomaterials and for contributing to the development of validated green synthesis procedures.
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Affiliation(s)
- Paolo N Catalano
- Departamento de Micro y Nanotecnologia, Instituto de Nanociencia y Nanotecnología, CNEA-CONICET, Av. General Paz 1499 (1650), San Martin, Argentina
| | - Ratiram G Chaudhary
- Post Graduate Department of Chemistry, S.K. Porwal College, Kamptee 441001, India
| | - Martín F Desimone
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Tecnicas (CONICET), Instituto de la Quimica y Metabolismo del Farmaco (IQUIMEFA), Facultad de Farmacia y Bioquimica Junin 956, Piso 3 (1113), Buenos Aires, Argentina
| | - Pablo L Santo-Orihuela
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquimica, Junin 956, Piso 3 (1113), Buenos Aires, Argentina
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Xiao LL, Wang N, Zheng B, Yu JM, Yu JP, Wang H, Xu Q, Cheng FF, Xiong WW. Using highly reactive tellurium precursors to synthesize organic hybrid indium-tellurides. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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