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Published on: March 8, 2016
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Synthesis and Characterization of Carbon Nitride Films for Micro Humidity Sensors
1Department of Electronic Engineering, Kyungnam University, Masan, Kyungnam 631-701, Korea. sensors@kyungnam.ac.kr.
Sensors (Basel, Switzerland)
|November 24, 2016
Summary
Nano-structured carbon nitride (CNx) films were developed for micro-humidity sensors. These films exhibit excellent linearity and low hysteresis, making them suitable for humidity sensing applications.
Area of Science:
- Materials Science
- Nanotechnology
- Sensor Technology
Background:
- Carbon nitride (CNx) films are promising materials for electronic applications.
- Developing reliable micro-humidity sensors is crucial for environmental monitoring and industrial processes.
Purpose of the Study:
- To synthesize nano-structured carbon nitride (CNx) films.
- To investigate the physical and electrical properties of CNx films for micro-humidity sensor applications.
Main Methods:
- Reactive RF magnetron sputtering with DC bias was employed for film synthesis.
- Fourier Transform Infrared (FTIR) spectroscopy was used to analyze chemical bonding.
- Surface morphology and electrical resistivity were characterized.
Main Results:
- CNx films displayed a C=N stretching band (1600–1700 cm⁻¹) indicative of nitrogen incorporation.
- Nano-structured surface morphology with ~20 nm grain size and a deposition rate of 1.5 μm/hr were observed.
- High electrical resistivity (10⁸–10⁸ Ω·cm) and good linearity with low hysteresis (5–95% RH) were achieved for micro-humidity sensors.
Conclusions:
- Nano-structured carbon nitride (CNx) films are suitable for micro-humidity sensing.
- The deposition conditions can be tuned to optimize film properties for sensor performance.
- The synthesized CNx films demonstrate potential for advanced humidity sensing technologies.
