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Low Detection Limit and High Sensitivity Wind Speed Sensor Based on Triboelectrification-Induced Electroluminescence
Li Su1, Hailu Wang2, Zhen Tian1
1Hebei Key Laboratory of Optic-electronic Information and Materials National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices College of Physics Science and Technology Hebei University Baoding City 071002 Hebei Province China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|December 14, 2019
Summary
A novel wind speed sensor combines wind-driven triboelectrification-induced electroluminescence (TIEL) with perovskite photodetectors. This hybrid sensor offers significantly higher sensitivity and faster response times for improved wind speed detection in IoT applications.
Area of Science:
- Materials Science
- Sensor Technology
- Optoelectronics
Background:
- The Internet of Things (IoT) drives demand for precise wind speed sensors.
- Current triboelectric nanogenerator (TENG) sensors have limited precision due to low output currents.
- Existing sensors struggle with sensitivity and response times for practical applications.
Purpose of the Study:
- To develop a highly sensitive and precise wind speed sensor.
- To overcome the limitations of low output current in TENG-based sensors.
- To integrate novel materials for enhanced wind detection capabilities.
Main Methods:
- Integration of a wind-driven triboelectrification-induced electroluminescence (TIEL) component with a perovskite-based photodetector (PD).
- Utilizing the high signal intensity of TIEL, even under gentle breezes.
- Matching the TIEL emission peak with the absorption band of perovskite materials for efficient signal conversion.
Main Results:
- The hybrid sensor demonstrates significantly higher signal intensity compared to mechanoluminescence (ML).
- Achieved a comparable detection limit (5 m s⁻¹) to TENG sensors but with three magnitudes higher sensitivity at low bias voltages.
- Exhibited an extremely short response time (<0.3 s) and favorable correlation with commercial sensors.
Conclusions:
- The proposed TIEL-PD hybrid sensor offers a promising solution for enhanced wind speed detection.
- This technology advances environmentally friendly light sources and TIEL-based sensor systems.
- The sensor's high sensitivity and rapid response time expand possibilities for IoT applications.
