Synthesis, optical properties, and photochemical activity of zinc-indium-sulfide nanoplates

Kempken, Björn; Dzhagan, Volodymyr; Alcocer, Marcelo J. P.; Kriegel, Ilka; Scotognella, Francesco; Parisi, J.; Kolny‐Olesiak, Joanna

doi:10.1039/c5ra20570k

Cited by 26 publications

(13 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using Raman spectroscopy with different λexc has proven to be a powerful tool for selectively probing both compositional and structural heterogeneities of small colloidal Earlier we observed Zn-S vibrations in the alloyed NCs of other multinary chalcogenides: CuInS 2 -ZnS [21,22,55], Cu-Zn-In-S [55], and Zn-In-S [56]. The spectrum of ZnS NCs at UV excitation (325 nm) reveals a sharp first-order LO phonon peak at 345 cm −1 and a relatively strong second-order feature at 790 cm −1 (Figure 7b), which is also distinct from the spectrum of Ag-Zn-S NCs at this excitation, showing only a weak first-order LO peak (Figure 7b).…”

Section: Resonance Effects In Raman Spectra Of Azts Ncsmentioning

confidence: 95%

Raman and X-ray Photoelectron Spectroscopic Study of Aqueous Thiol-Capped Ag-Zn-Sn-S Nanocrystals

et al. 2021

Self Cite

View full text Add to dashboard Cite

The synthesis of (Cu,Ag)-Zn-Sn-S (CAZTS) and Ag-Zn-Sn-S (AZTS) nanocrystals (NCs) by means of “green” chemistry in aqueous solution and their detailed characterization by Raman spectroscopy and several complementary techniques are reported. Through a systematic variation of the nominal composition and quantification of the constituent elements in CAZTS and AZTS NCs by X-ray photoemission spectroscopy (XPS), we identified the vibrational Raman and IR fingerprints of both the main AZTS phase and secondary phases of Ag-Zn-S and Ag-Sn-S compounds. The formation of the secondary phases of Ag-S and Ag-Zn-S cannot be avoided entirely for this type of synthesis. The Ag-Zn-S phase, having its bandgap in near infrared range, is the reason for the non-monotonous dependence of the absorption edge of CAZTS NCs on the Ag content, with a trend to redshift even below the bandgaps of bulk AZTS and CZTS. The work function, electron affinity, and ionization potential of the AZTS NCs are derived using photoelectron spectroscopy measurements.

show abstract

Section: Resonance Effects In Raman Spectra Of Azts Ncsmentioning

confidence: 95%

Raman and X-ray Photoelectron Spectroscopic Study of Aqueous Thiol-Capped Ag-Zn-Sn-S Nanocrystals

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…38 and 39) and distinguishing the ZnS shell formation from Zn alloying into CIS 40 or In x S NPs. 41 The spectrum of pristine CIS NPs at l exc ¼ 488 nm is dominated by a broad complex feature at 240-400 cm À1 (Fig. 4a, curve 1).…”

Section: Screening For the Optimal Composition Of Cis@zns Npsmentioning

confidence: 99%

Non-stoichiometric Cu–In–S@ZnS nanoparticles produced in aqueous solutions as light harvesters for liquid-junction photoelectrochemical solar cells

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…The spectrum of Ag-Zn-S NCs is most likely a combination of Ag-S vibrations (resulting in the 210 cm -1 feature) and Zn-S vibrations (resulting in the 260 cm -1 feature) of a joint/alloyed ternary compound/lattice. Earlier we observed Zn-S vibrations in the alloyed NCs of other multinary chalcogenides: CuInS2-ZnS [21,22,55], Cu-Zn-In-S [55], and Zn-In-S [56]. The spectrum of ZnS NCs at UV excitation (325 nm) reveals a sharp first-order LO phonon peak at 345 cm -1 and a relatively strong second-order feature at 790 cm -1 (Figure 7b), which is also distinct from the spectrum of Ag-Zn-S NCs at this excitation showing only a weak first-order LO peak (Figure 7b).…”

Section: Variation Of Tin Content -Ag2znsnxs4 Ncsmentioning

confidence: 72%

Raman and X-ray Photoelectron Spectroscopic Study of Aqueous Thiol-Capped Ag-Zn-Sn-S Nanocrystals

Dzhagan¹,

Selyshchev²,

Havriliuk³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

The variation of the cationic composition in I2-II-IV-VI4 semiconductor compounds is an effective tool for altering their properties in a controlled manner. In particular, a partial substitution of Cu for Ag in kesterite Cu2ZnSnS4 was proposed to suppress Cu-Zn antisite defects and the improve photovoltaic performance. However, the efficiency of this approach may substantially depend on the fabrication route. Here, we report on the synthesis of (Cu,Ag)-Zn-Sn-S (CAZTS) and Ag-Zn-Sn-S (AZTS) nanocrystals (NCs) by means of "green" chemistry in aqueous solution and their detailed characterization by Raman spectroscopy and by several complementary techniques. Through a systematic variation of the nominal composition and quantification of the constituent elements in CAZTS and AZTS NCs by XPS, we identified the vibrational Raman and IR fingerprints of both the main AZTS phase and secondary phases of Ag-Zn-S and Ag-Sn-S compounds (for the first time). The formation of the secondary phases of Ag-S and Ag-Zn-S cannot be avoided entirely for this type of synthesis. The Ag-Zn-S phase, having its bandgap in near infrared range, is the reason of the non-monotonous dependence of the absorption edge of CAZTS NCs on the Ag content, with a trend to redshift even below the bandgaps of bulk AZTS and CZTS.

show abstract

Synthesis, optical properties, and photochemical activity of zinc-indium-sulfide nanoplates

Abstract: Colloidal zinc-indium-sulfide nanoplates with varying Zn content were synthesized and their optical, structural and photochemical properties were studied.

Cited by 26 publications

References 47 publications

Raman and X-ray Photoelectron Spectroscopic Study of Aqueous Thiol-Capped Ag-Zn-Sn-S Nanocrystals

Raman and X-ray Photoelectron Spectroscopic Study of Aqueous Thiol-Capped Ag-Zn-Sn-S Nanocrystals

Non-stoichiometric Cu–In–S@ZnS nanoparticles produced in aqueous solutions as light harvesters for liquid-junction photoelectrochemical solar cells

Raman and X-ray Photoelectron Spectroscopic Study of Aqueous Thiol-Capped Ag-Zn-Sn-S Nanocrystals

Contact Info

Product

Resources

About