研究目的
To grow single-crystal Cd0.9Zn0.1Te ingots using the pressure-controlled Bridgman method and characterize their properties for gamma ray detection applications.
研究成果
Single-crystal Cd0.9Zn0.1Te ingots were successfully grown using the VB method with ACRT and Cd source for vapor pressure control. The ingots exhibited high crystallinity, uniform elemental distribution, and suitable properties for gamma ray detection, demonstrating the effectiveness of the pressure control method in reducing Te inclusion sizes.
研究不足
The study focuses on the growth and characterization of Cd0.9Zn0.1Te ingots, with limited discussion on the scalability of the method or the economic feasibility of large-scale production.
1:Experimental Design and Method Selection:
The pressure-controlled Bridgman method was used with ACRT to suppress constitutional supercooling.
2:Sample Selection and Data Sources:
High purity Cd, Zn, and Te with stoichiometry of Cd
3:9Zn1Te and 10 ppm (at.) indium dopant were used. List of Experimental Equipment and Materials:
A graphite-coated quartz ampoule, a six-segment VB furnace, and GDMS for elemental concentration measurement.
4:Experimental Procedures and Operational Workflow:
The synthesis involved sealing the materials in an ampoule, heating, and rocking the furnace. Growth proceeded with optimized ACRT parameters and temperature fields.
5:Data Analysis Methods:
GDMS was used for elemental concentration, X-ray rocking curves for crystallinity, and IR transmittance for quality assessment.
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