Refractive index of SnS thin nano-crystalline films

Jakhar, Amit; Jamdagni, Ashu; Bakshi, A.K.; Verma, Taruna; Shukla, Vibhav; Jain, Priyal; Sinha, Nidhi; Arun, P.

doi:10.1016/j.ssc.2013.06.013

Cited by 22 publications

(15 citation statements)

References 23 publications

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“…The carrier density (N) of the SnS 2 thin film is about N = 5.08 × 10 18 cm −3 (ε r = 17.7) [16,22], which is 35 times higher than the SnS thin film (N = 1.43 × 10 17 cm −3 (ε r = 10.48) [43,44]. Generally, photogenerated carriers may undergo recombination due to defects present in the semiconductor before they can be collected or utilized for water splitting.…”

Section: Sn + S → Sns (Charge Neutrality)mentioning

confidence: 95%

SnSx (x = 1, 2) Nanocrystals as Effective Catalysts for Photoelectrochemical Water Splitting

et al. 2017

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Abstract:Two-dimensional SnS x (x = 1, 2) nanocrystals are attractive catalysts for photoelectrochemical water splitting as their components are earth abundant and environmentally friendly. We have fabricated SnS thin-film photoelectrodes by spin coating mixed-phase SnS nanocrystals synthesized via a hot-injection technique on glass/Cr/Au substrates. The obtained SnS thin films can be transformed into SnS 2 by introducing structural phase changes via a facile low-vacuum annealing protocol in the presence of sulfur. This sulfurization process enables the insertion of sulfur atoms between layers of SnS and results in the generation of shallow donors that alter the mechanism for water splitting. The SnS 2 thin films are used as stable photocatalysts to drive the oxygen evolution reaction, and the light-current density of 0.195 mA/cm 2 at 0.8 V vs. Ag/AgCl can be achieved due to the high carrier density, lower charge transfer resistance, and a suitable reaction band position. Based on a combination of UV-Vis spectroscopy (ultraviolet and visible spectroscopy), cyclic voltammetry and Mott-Schottky analysis, the band positions and band gaps of SnS and SnS 2 relative to the electrolyte are determined and a detailed mechanism for water splitting is presented. Our results demonstrate the potential of layered tin sulfide compounds as promising photocatalysts for efficient and large-scale water splitting.

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Section: Sn + S → Sns (Charge Neutrality)mentioning

confidence: 95%

SnSx (x = 1, 2) Nanocrystals as Effective Catalysts for Photoelectrochemical Water Splitting

et al. 2017

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“…We hence proceed reporting effect of Ag-SnS interface in this study. The results of Priyal et al [28,8] were used for the SnS background's dielectric constant. The studies showed SnS film's refractive index follow a trend similar to the Cauchy's dispersion relation [40] with the wavelength, where the coefficients strongly depend on SnS grain size.…”

Section: Theoretical Considerationmentioning

confidence: 99%

Localized surface plasmon resonance in SnS:Ag nano-composite films

Jain

Arun

2014

Journal of Applied Physics

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Nano-composite films of Tin Sulfide (SnS) and silver (Ag) fabricated by thermal evaporation showed two prominent peaks in the visible region of their extinction spectra. Theoretical modeling of the extinction spectra suggest that these two peaks (≈ 500 nm and ≈ 580 nm) correspond to the longitudinal mode (LM) and transverse mode (TM) surface plasmon resonance peaks arising from oblate silver nano-particles. Using grain size of silver and SnS obtained from structural and morphological characterizations of the samples and dielectric constants as per actuals, we have compared the experimental results with those from theory. The study shows that silver nano-particles efficiently scatters light and can be used for developing plasmonic based SnS solar cells with improved efficiencies.

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“…The images show that the grains are spherical in nature. In our recent works [10,11,12], we have grown SnS films on glass substrates which resulted in films oriented with (040) planes parallel to the substrate or in other words the larger 'b' edge of the unit cell were arranged along the substrate. This resulted in elongated SnS grains on glass substrates.…”

Section: Characterization Of Sns Filmsmentioning

confidence: 99%

“…However, due to the toxic nature of Cadmium and its compounds, Cadmium compounds rule themselves out as a candidate [8]. Tin Sulphide (SnS) promises to be the most suitable candidate for solar cells [5,9] due to its optimum optical properties which are tunable by varying the grain size and/ or lattice parameters [10,11,12]. SnS films also have high absorption coefficients [13,14] and optical band-gap in the range of 1.1-2.1 eV [15,16].…”

Section: Introductionmentioning

confidence: 99%

Photovoltaic performance of hybrid ITO/PEDOT:PSS/n-SnS/Al solar cell structure

Jain

Arun

2016

J. Semicond.

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The present paper discusses the influence of Tin Sulphide's grain size on the performance of ITO/PEDOT:PSS/SnS/Al structured solar cells fabricated by thermal evaporation. The grain sizes were maintained in the range of 11-18 nm by controlling the thickness of SnS films. While the open circuit voltage (V oc ) was found to be a constant for this structure, parameters such as short circuit current density (J sc ), series resistance (R s ), parallel resistance (R p ), ideality factor and the overall efficiency were found to be dependent on the SnS grain size and incident light intensity. The experimental work directly reconfirms the theoretical results and ideas raised in literature by early researchers.

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Refractive index of SnS thin nano-crystalline films

Cited by 22 publications

References 23 publications

SnSx (x = 1, 2) Nanocrystals as Effective Catalysts for Photoelectrochemical Water Splitting

SnSx (x = 1, 2) Nanocrystals as Effective Catalysts for Photoelectrochemical Water Splitting

Localized surface plasmon resonance in SnS:Ag nano-composite films

Photovoltaic performance of hybrid ITO/PEDOT:PSS/n-SnS/Al solar cell structure

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