研究目的
To investigate the effect of adding an extra active layer of ZnO/CuO core/shell nanoparticles on the performance of organic solar cells.
研究成果
The inclusion of an inorganic layer of ZnO/CuO core/shell nanoparticles prior to the organic active layer blend improved the power conversion efficiency (PCE) of the solar cell due to increased Voc, Jsc, and FF. The synthesized ZnO/CuO core/shell nanoparticles are promising materials for the fabrication of solar cell devices.
研究不足
The study focuses on the synthesis and characterization of ZnO/CuO core/shell nanoparticles and their application in organic solar cells. The limitations include the specific molar ratios of ZnO to CuO used and the focus on a particular type of organic solar cell.
1：Experimental Design and Method Selection:
Sol-gel method was used for the synthesis of ZnO/CuO core/shell nanoparticles with different molar ratios.
2：Sample Selection and Data Sources:
ZnO/CuO core/shell nanoparticles with ZnO:CuO molar ratios of 1:1 M, 1:2 M, and 2:1 M were synthesized.
3：List of Experimental Equipment and Materials:
Zinc nitrate hexahydrate, boric acid powder, potassium hydroxide pellets, copper sulphate pentahydrate, absolute ethanol, and other chemicals were used. Equipment included XRD, SEM, TEM, EDX, FT-IR, PL spectroscopy, spectrophotometry, and IV characterization kit.
4：Experimental Procedures and Operational Workflow:
The synthesis involved two steps: core ZnO NPs synthesis and formation of CuO shell onto core ZnO NPs. Solar cells were fabricated with and without the ZnO/CuO layer.
5：Data Analysis Methods:
The synthesized nanoparticles were characterized using various techniques to analyze their structural, optical, and electronic properties.
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X-ray diffraction
Structural analysis of nanoparticles
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scanning electron microscopy
Morphology investigation of nanoparticles
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transmission electron microscopy
Morphology and size determination of nanoparticles
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energy dispersive x-ray spectroscopy
Elemental composition analysis
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fourier transform infrared spectroscopy
Functional groups determination
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photoluminescence spectroscopy
Charge migration efficiency and recombination behavior investigation
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spectrophotometry
Optical properties examination
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IV characterization kit
Solar cell characteristics measurement
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solar simulator
SCIENCETECH FS-02
Measurement of current density-voltage characteristics
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source meter unit
Keithley 2420
Measurement of current density-voltage characteristics
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atomic force microscope
Veeco Nano Scope V
Nanomorphology observation of photoactive layers
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