研究目的
To evaluate the sensitivity of BST film to the wavelength of LED lights.
研究成果
BST thin films can be used as light sensors to detect LED lights, with the most significant sensitivity to blue light. The decrease in resistance was most pronounced for blue LED light, indicating its potential for specific light sensing applications.
研究不足
The study focuses on the sensitivity of BST film to LED lights and does not explore its sensitivity to other light sources or its performance under varying environmental conditions.
1：Experimental Design and Method Selection:
BST film was synthesized using the CSD method by reacting barium acetate, strontium acetate, and titanium isopropoxide. The solution was mixed using an ultrasonic stirrer and grown on a substrate by a spin coating method. The annealing process was performed to diffuse the BST solution above the silicon substrate.
2：Sample Selection and Data Sources:
The BST film was characterized to evaluate its optical and electrical properties, including absorbance, IV, and sensitivity tests.
3：List of Experimental Equipment and Materials:
Equipment used includes an Ocean Optics4000 spectrophotometer, Keithley2400 IV meter, and a VulcanTM-3-130 furnace. Materials include barium acetate, strontium acetate, titanium isopropoxide, and 2-methoxyethanol.
4：Experimental Procedures and Operational Workflow:
The BST solution was prepared, applied to a substrate, annealed, and then characterized for optical and electrical properties.
5：Data Analysis Methods:
The energy gap was obtained using the tauc plot method, and the sensitivity of the film was evaluated by changes in resistance when exposed to light intensity changes.
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