Structural, morphological and spectroscopic ellipsometry studies on sputter deposited Sb2S3 thin films

Medina-Montes, M. I.; Montiel‐González, Z.; Paraguay‐Delgado, F.; Mathews, Nini Rose; Mathew, Xavier

doi:10.1007/s10854-016-5033-0

Cited by 47 publications

(30 citation statements)

References 37 publications

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“…The experimentally determined E g are ≈2.7 and 1.8 eV for amorphous and polycrystalline Sb 2 S 3 , respectively (Table 5, Tauc plots in Supporting Information File 1, Figure S12). In comparison, E g of amorphous CBD-Sb 2 S 3 on glass substrates is ≈2.5 eV [58] and E g of polycrystalline Sb 2 S 3 prepared by physical and chemical methods is commonly reported as 1.6–1.8 eV [1,22,58–60]. As such, we find the E g of our polycrystalline Sb 2 S 3 layers lies satisfactorily in the range of published values.…”

Section: Resultssupporting

confidence: 85%

Uniform Sb₂S₃optical coatings by chemical spray method

Eensalu¹,

Katerski²,

Kärber³

et al. 2019

Beilstein J. Nanotechnol.

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Antimony sulfide (Sb2S3), an environmentally benign material, has been prepared by various deposition methods for use as a solar absorber due to its direct band gap of ≈1.7 eV and high absorption coefficient in the visible light spectrum (1.8 × 105 cm−1 at 450 nm). Rapid, scalable, economically viable and controllable in-air growth of continuous, uniform, polycrystalline Sb2S3 absorber layers has not yet been accomplished. This could be achieved with chemical spray pyrolysis, a robust chemical method for deposition of thin films. We applied a two-stage process to produce continuous Sb2S3 optical coatings with uniform thickness. First, amorphous Sb2S3 layers, likely forming by 3D Volmer–Weber island growth through a molten phase reaction between SbCl3 and SC(NH2)2, were deposited in air on a glass/ITO/TiO2 substrate by ultrasonic spraying of methanolic Sb/S 1:3 molar ratio solution at 200–210 °C. Second, we produced polycrystalline uniform films of Sb2S3 (E g 1.8 eV) with a post-deposition thermal treatment of amorphous Sb2S3 layers in vacuum at 170 °C, <4 × 10−6 Torr for 5 minutes. The effects of the deposition temperature, the precursor molar ratio and the thermal treatment temperature on the Sb2S3 layers were investigated using Raman spectroscopy, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and UV–vis–NIR spectroscopy. We demonstrated that Sb2S3 optical coatings with controllable structure, morphology and optical properties can be deposited by ultrasonic spray pyrolysis in air by tuning of the deposition temperature, the Sb/S precursor molar ratio in the spray solution, and the post-deposition treatment temperature.

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Section: Resultssupporting

confidence: 85%

Uniform Sb₂S₃optical coatings by chemical spray method

Eensalu¹,

Katerski²,

Kärber³

et al. 2019

Beilstein J. Nanotechnol.

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“…The calculated smallest direct gap was around the X point with a value of 1.84 eV and indirect value of 1.76 eV. Note that forbidden gap values are in good agreement with the majority of bandgaps confirmed experimentally in polycrystalline Sb 2 S 3 ($1.7 eV [49][50][51][52] ).…”

Section: Basic Properties Of Sb 2 Ssupporting

confidence: 82%

Sb2S3 Solar Cells

Kondrotas

Chao

Tang

2018

Joule

431

348

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Power generated from sustainable and environmentally benign solar cell technologies is one of the key aspects in the development of clean renewable energy. Earth-abundant and non-toxic materials with suitable bandgap and absorption coefficient for photovoltaic application have drawn considerable attention in the last few decades. Here we examine Sb 2 S 3 , an emerging thin film solar cell technology that also has exciting opportunities for Si-based tandem solar cell application. We conduct a systematic analysis of Sb 2 S 3-based photovoltaic devices, highlighting major advancements and most prominent limitations of this technology. This study also encompasses device performance simulation, providing a roadmap for further Sb 2 S 3 technology development.

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“…), and the integrated photocurrent density across the AM 1.5 G solar spectrum (3.4 mA cm -2 ) matches well with the photocurrent density obtained from the current density-voltage curve measurements with our solar simulator (3.3 mA cm -2 ). The onset of the IPCE spectrum was around 740 nm (1.7 eV), which matches the band gap of Sb2S3 (1.7 eV) 20. …”

supporting

confidence: 57%

Sb₂S₃/TiO₂ Heterojunction Photocathodes: Band Alignment and Water Splitting Properties

et al. 2020

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Antimony sulfide (Sb2S3) is a promising light absorbing semiconductor for photovoltaic applications, though it remains vastly unexplored for photoelectrochemical water splitting. Sb2S3 was synthesized by a simple sulfurization of electrodeposited antimony metal at relatively low temperatures (240-300°C) with elemental sulfur. Using a TiO2 buffer layer and a platinum cocatalyst, photocurrent densities up to ~ 9 mA cm-2 were achieved at-0.4 V vs. RHE in 1 M H2SO4 under one sun illumination. Using XPS band alignment studies and potential dependent IPCE measurements, a conduction band offset of 0.7 eV was obtained for the Sb2S3/TiO2 junction as well as an unfavorable band bending at the heterointerface, which explains the low photovoltage that was observed (~ 0.1 V). Upon inserting an In2S3 buffer layer, which offers a better band alignment, a 0.15 V increase in photovoltage was obtained. The excellent PEC performance and the identification of the origin of the low photovoltage of the Sb2S3 photocathodes in this work pave the way for the further development of this promising earth abundant light absorbing semiconductor for solar fuels generation.

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Structural, morphological and spectroscopic ellipsometry studies on sputter deposited Sb2S3 thin films

Cited by 47 publications

References 37 publications

Uniform Sb₂S₃optical coatings by chemical spray method

Uniform Sb₂S₃optical coatings by chemical spray method

Sb2S3 Solar Cells

Sb₂S₃/TiO₂ Heterojunction Photocathodes: Band Alignment and Water Splitting Properties

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Structural, morphological and spectroscopic ellipsometry studies on sputter deposited Sb2S3 thin films

Cited by 47 publications

References 37 publications

Uniform Sb2S3optical coatings by chemical spray method

Uniform Sb2S3optical coatings by chemical spray method

Sb2S3 Solar Cells

Sb2S3/TiO2 Heterojunction Photocathodes: Band Alignment and Water Splitting Properties

Contact Info

Product

Resources

About

Uniform Sb₂S₃optical coatings by chemical spray method

Uniform Sb₂S₃optical coatings by chemical spray method

Sb₂S₃/TiO₂ Heterojunction Photocathodes: Band Alignment and Water Splitting Properties