研究目的
Investigating the sequential deposition method for the fabrication of Sb2S3 thin films for efficient solar cell applications.
研究成果
The sequential deposition method provides a convenient and low-cost approach for the deposition of high-quality Sb2S3 films, leading to efficient planar heterojunction solar cells with a power conversion efficiency of 5.69%. The method allows for the tuning of the sulfur content in the films, which is crucial for optimizing device performance.
研究不足
The study is limited to the fabrication of Sb2S3 thin films using a specific sequential deposition method. The scalability and long-term stability of the solar cells were not addressed.
1：Experimental Design and Method Selection:
A two-step sequential deposition method was used to prepare Sb2S3 thin films, utilizing antimony acetate and thiourea as precursors. The films were annealed at mild temperatures to achieve high-quality Sb2S3 films.
2：Sample Selection and Data Sources:
Antimony(III) acetate and thiourea were used as the antimony and sulfur sources, respectively. The films were characterized using XRD, Raman spectroscopy, SEM, XPS, and UV-vis absorption spectroscopy.
3：List of Experimental Equipment and Materials:
Equipment included a spin-coater, hotplate, vacuum chamber, XRD diffractometer, UV-visible spectrophotometer, Raman spectrometer, SEM, XPS system, and solar simulator.
4：Experimental Procedures and Operational Workflow:
The Sb(Ac)3 precursor solution was spin-coated on a compact TiO2 layer, followed by spin-coating of thiourea solution. The film was then annealed at various temperatures to form Sb2S
5：Data Analysis Methods:
The structural and compositional properties of the films were analyzed using XRD, Raman spectroscopy, and XPS. The optical properties were measured using UV-vis absorption spectroscopy.
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X-ray diffractometer
Bruker Advance D8
Bruker
Used for structural characterization of the films.
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X-ray photoelectron spectroscopy system
Thermo ESCALAB 250Xi
Thermo
Used for compositional characterization of the films.
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Antimony(III) acetate
C6H9O6Sb
Alfa
Used as an antimony source in the preparation of Sb2S3 thin films.
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Thiourea
TU
Sinopharm
Used as a sulfur source in the preparation of Sb2S3 thin films.
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Dimethyl sulfoxide
DMSO
J&K
Used as a solvent in the preparation of precursor solutions.
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Spiro-OMeTAD
Youxuan Tech., Ltd.
Used as a hole transporting material in the solar cell devices.
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UV-visible spectrophotometer
SOLID 3700
Used for optical characterization of the films.
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Raman spectrometer
LABRAM-HR Evolution
Used for vibrational characterization of the films.
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Scanning electron microscope
SU8200
Used for morphological characterization of the films.
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Solar simulator
Oriel Sol 3A
Oriel
Used for measuring the photovoltaic performance of the solar cells.
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