研究目的
To develop portable devices for monitoring ultraviolet radiation based on a specialized semiconductor structure with negative differential resistance, addressing the need for low-cost, small-sized, and reliable monitoring tools for various applications.
研究成果
The developed portable UV radiation monitoring devices, based on a specialized semiconductor sensor, are inexpensive, small-sized, reliable, and easy to use. They enable individual and collective monitoring with light/sound alarms and intensity measurement, suitable for various applications without additional electronic circuits. Testing confirmed operability in diverse conditions, offering advantages for large-scale objects and systems requiring cost-effective solutions.
研究不足
The devices are designed for local applications where high accuracy is not required; they may not be suitable for scenarios needing complex instrumentation or very precise measurements. Limitations include reliance on specific semiconductor properties and potential constraints in extreme environments not tested.
1：Experimental Design and Method Selection:
The design involves using a semiconductor sensor with a p+-n structure sensitive to UV radiation (230-400 nm range), operating on principles of charge accumulation and resistance change. Methods include direct measurement of internal resistance for dose quantification and intensity measurement via voltmeter scaling.
2：Sample Selection and Data Sources:
Prototypes of dosers and dosimeters were developed and tested under various operating conditions, with data derived from sensor responses to UV exposure.
3：List of Experimental Equipment and Materials:
Semiconductor sensors (3x3 mm size), digital indicators, light/sound alarm components, voltmeters, batteries, and mechanical shutters for sensor relaxation.
4：Experimental Procedures and Operational Workflow:
Steps include exposing the sensor to UV radiation, measuring resistance changes, converting to dose or intensity values, and testing alarm functionalities (e.g., light or sound signals at threshold doses). A closing shutter and timer are used for intensity measurement scaling.
5：Data Analysis Methods:
Analysis involves modeling the sensor's current-voltage characteristics, calculating radiation intensity from voltage readings (e.g., 5 mV corresponds to 0.2 W/m2), and evaluating error margins (e.g., relative error of 0.064).
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
