研究目的
Investigating the synthesis and characterization of methylammonium-zinc-lead iodide (MAZn0.2Pb0.8I3) as a lead-less and more stable perovskite material for solar cell applications.
研究成果
The synthesis of MAZn0.2Pb0.8I3 in air ambient results in a lead-less and more stable perovskite material with a 1.65 eV optical band gap and 51 nm minority carrier diffusion length. The material shows superior stability compared to MAPbI3 when stored in dark air ambient for 60 days, making it a promising candidate for solar cell applications.
研究不足
The study focuses on the synthesis and characterization of MAZnxPb1-xI3 in air ambient but does not address the scalability for industrial applications or the performance in actual solar cell devices.
1：Experimental Design and Method Selection:
Synthesis of MAZnxPb1-xI3 (x = 0, 0.2, 0.5, 0.8) in air ambient and characterization using UV–Visible spectroscopy, steady-state photocarrier grating (SSPG) technique, X-ray powder diffraction (XRPD), Fourier-transform infrared spectroscopy (FTIR), and Field Emission Scanning Electron Microscope (FESEM).
2：2, 5, 8) in air ambient and characterization using UV–Visible spectroscopy, steady-state photocarrier grating (SSPG) technique, X-ray powder diffraction (XRPD), Fourier-transform infrared spectroscopy (FTIR), and Field Emission Scanning Electron Microscope (FESEM). Sample Selection and Data Sources:
2. Sample Selection and Data Sources: Glass substrates were used for perovskite materials deposition. Samples were stored in dark air ambient with average relative humidity of 45% at room temperature (27 °C) for 60 days.
3：List of Experimental Equipment and Materials:
Hydroiodic acid, methylamine, PbI2, ZnI2, γ-butyrolactone, Rigaku Miniflex 600 X-Ray Diffractometer, PerkinElmer RX1 Fourier transform infrared spectrometer, UV spectrophotometer (LABINDIA UV 3000+), Keithley 224 source, digital picoAmmeter DPM-111, HITACHI Field Emission- Scanning Electron Microscope (FE-SEM) SU8010 model.
4：Experimental Procedures and Operational Workflow:
Preparation of CH3NH3I, synthesis of CH3NH3PbI3 and MAZnxPb1-xI3, deposition on glass slides, characterization before and after aging.
5：Data Analysis Methods:
Analysis of UV–Vis spectra, XRPD diffractograms, FTIR patterns, I-V characteristics, and FESEM images to study structural, chemical bonding, surface morphology, and stability.
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Rigaku Miniflex 600 X-Ray Diffractometer
MiniFlex 600
Rigaku
Used for X-ray powder diffraction (XRPD) to study the structural properties of perovskite materials.
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PerkinElmer RX1 Fourier transform infrared spectrometer
RX1
PerkinElmer
Used for Fourier-transform infrared spectroscopy (FTIR) to study chemical bonding in perovskite materials.
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Keithley 224 source
224
Keithley
Used for I-V characterization to study the photoconductivity and ohmic behavior of perovskite films.
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Field Emission- Scanning Electron Microscope
SU8010
HITACHI
Used to study the surface and cross-section morphologies of the perovskite films.
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UV spectrophotometer
LABINDIA UV 3000+
LABINDIA
Used for UV–Visible spectroscopy to study the optical properties of perovskite materials.
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Digital picoAmmeter
DPM-111
Used for I-V characterization under vacuum condition.
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