研究目的
Investigating the use of Zn2SnO4 as a compact layer in perovskite solar cells to achieve high efficiency.
研究成果
The study successfully synthesized Zn2SnO4 film using a new reflux condensation route and applied it as a compact layer in PSCs, achieving an efficiency of 20.1%. The high efficiency is attributed to the high electron mobility and appropriate energy band structure of Zn2SnO4, which facilitates efficient carrier extraction and electron transport, and suppresses charge recombination.
研究不足
The study focuses on the synthesis and application of Zn2SnO4 as a compact layer in PSCs, with potential areas for optimization in the synthesis process and device stability.
1：Experimental Design and Method Selection:
A new reflux condensation route was developed for synthesizing Zn2SnO4 film.
2：Sample Selection and Data Sources:
FTO substrate was used as the base, with Zn2SnO4, ZnO, and SnO2 as compact layers.
3：List of Experimental Equipment and Materials:
X-ray diffraction, transmission electron microscope, scanning electron microscope, UV-vis spectrometer, ultraviolet photoelectron spectroscopy, Keithley 2400 source-Meter, etc.
4：Experimental Procedures and Operational Workflow:
Preparation of electronic transport layer, perovskite film, hole transport layer, and Au electrode.
5：Data Analysis Methods:
UV-vis transmission spectra, steady-state PL and TRPL spectroscopy, electrochemical impedance spectroscopy.
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ultraviolet photoelectron spectroscopy
ESCALAB 250Xi
Thermo Fisher
Analysis of energy band structure
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X-ray diffraction
Rigaku
Tokyo, Japan
Measurement of composition
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transmission electron microscope
FEI, Tecnai G2 F20 S-TWIN
Measurement of composition
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scanning electron microscope
Hitachi S4800
Characterization of sample microscopic morphologies
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SPA-300 atomic force microscope
Bruker
Characterization of sample microscopic morphologies
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UV-Vis spectrometer
Shimadzu UV-2450
Measurement of UV-vis absorption and transmittance spectra
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Keithley 2400 source-Meter
Measurement of photovoltaic property
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Edinburgh FLS 980 instrument
Collection of steady-state photoluminescence and time-resolved photoluminescence spectroscopy
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electrochemical workstation
Zahner, IM6
Investigation of electrochemical impedance spectroscopy
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