研究目的
Investigating the effects of thermoelectric control on the optical performance and lifetime of deep UV LEDs.
研究成果
The implementation of the TEC device for the thermal control of the UV-C LED light source allows an efficient optimization of the optical performance and potentially improves the device's lifetime. Operating the UV-C LED at lower temperatures enhances optical performance.
研究不足
The study's limitations include the specific range of temperatures and the predefined stationary temperature value TEST affecting the cooling process dynamics. The thermal performance of each LED device varies depending on factors like thermal conductivity of the heat dissipaters and operation ambient temperature.
1：Experimental Design and Method Selection:
The study implemented a thermoelectric control system using TEC devices combined with an aluminum heat dissipater and a fan heat extractor. A PID control technique was used to control the voltage in the TEC devices.
2：Sample Selection and Data Sources:
The study used a 285 nm UV-C LED model VPS171 by Nikkiso Co.
3：List of Experimental Equipment and Materials:
Equipment included a TEC model number TEC1-12706 by Hebei I.T. Co. Ltd., a SiC photodiode model SG01D-C18 from SGLux, and a calibrated thermistor.
4：Experimental Procedures and Operational Workflow:
The setup involved mounting the UV-C LED system on an optical table, directing the light output toward an optical sensor, and mounting a temperature sensor at the solder point.
5：Data Analysis Methods:
The study used computational simulations based on physical models and experimental data recordings for temperature and optical power measurements.
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