研究目的
To investigate the structural, optical, and photovoltaic properties of Barium doped cuprous oxide thin films prepared by nebulizer spray technique for potential application in solar cells.
研究成果
The study successfully demonstrated the preparation of Ba-doped Cu2O thin films using NST, showing improved structural, optical, and electrical properties with increasing Ba doping concentration. The fabricated solar cell exhibited an efficiency of 0.85%, suggesting potential for further optimization and application in photovoltaic devices.
研究不足
The study is limited to the investigation of Ba-doped Cu2O thin films up to 7% doping concentration. The efficiency of the fabricated solar cell is relatively low (0.85%), indicating potential areas for optimization in doping concentration and fabrication techniques.
1：Experimental Design and Method Selection:
The study used Nebulizer spray technique (NST) to deposit pure and Ba-doped Cu2O thin films on heated glass substrates. Different doping concentrations (0%, 3%, 5%, and 7%) of Ba were used.
2：Sample Selection and Data Sources:
The samples were prepared using Copper (II) acetate monohydrate, glucose, 2-propanol, and barium nitrate as starting materials. The substrates were cleaned before deposition.
3：List of Experimental Equipment and Materials:
X-ray diffractometer (Bruker D8 advance), Atomic force microscopy (AFM), Raman spectrum (Princeton Acton SP 2500), UV visible spectrometer (Hitatchi-330), Perkin Elmer LS55 fluorescence spectrophotometer, Hall Effect measurement setup, and Keithley source meter 2450 were used.
4：Experimental Procedures and Operational Workflow:
The solution was stirred for 35 min to homogenize. The spray process was carried out with the nozzle kept at ~5 cm distance with a pressure of 2 bar and substrate temperature at 280 °C. After deposition, the film was cooled to room temperature.
5：Data Analysis Methods:
XRD for structural properties, AFM for morphology, Raman for phase confirmation, UV-Vis for optical properties, PL for emission characteristics, Hall Effect for electrical properties, and I-V characteristics for solar cell performance.
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