研究目的
The objective of our research is to improve the efficiencies of PEC cells by identifying and engineering corrosion-resistant semiconductors that exhibit the optimal conduction and valence band edge alignment for PEC applications.
研究成果
Undoped and modified with Zn2+ hematite films were synthesized by the CSP method at 320°C temperature. The Zn2+ doped influenced on the photocatalytic performance of films, exhibiting a better photocatalytic performance than undoped hematite film. The better performance was attributed to their higher carrier density that improved their conductivity. The films are suitable for spintronic applications, as controlling magnetic properties is very important for spin transistor applications.
研究不足
The photocatalytic performance of a-Fe2O3 is limited by certain factors such as high recombination rate of electrons and holes, low diffusion lengths of holes (2–4 nm), and poor conductivity, which led to both low efficiencies and a larger requisite over potential for photo-assisted water oxidation.
1：Experimental Design and Method Selection:
The study employed the Chemical Spray Pyrolysis (CSP) method for the preparation of hematite (a-Fe2O3) and ZnxFe3-XO4 thin films, allowing optimal control of stoichiometry and impurity incorporation.
2：Sample Selection and Data Sources:
The substrates were sprayed with argon gas onto a substrate heated to 320°C at a distance of 30 cm. The salts were prepared as
3：1 molar solutions in deionized water. List of Experimental Equipment and Materials:
Components of the CSP setup include a temperature control unit, substrate heater, deposition solution, and atomizer. Different types of atomizers such as air blast, ultrasonic or electrostatic can be employed.
4：Experimental Procedures and Operational Workflow:
The interaction of droplets with substrate surface, aerosol transport, and evaporation of solvent and decomposition of precursor are consecutive or simultaneous processes of this processing technique.
5：Data Analysis Methods:
XRD, XPS, Raman, FE-SEM and AFM techniques have been used for structural analysis; Absorption technique has been used for optical properties; Hall and Vibrating Sample Magnetometer (VSM) techniques have been used for magnetic properties.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
