| ZnO (Zincite) - Main Applications |
 The past years are marked with an upsurge of interest to single crystal zinc oxide (ZnO) and its application. Due to the unique combination of semiconductor, piezoelectric, optical and thermal characteristics ZnO crystals can find a broad spectrum of applications in science and technology (piezoelectric converters, optical waveguides, gas sensors, optoelectronic and acoustoelectronic gadgets, scintillators etc.). Today ZnO is regarded as one of the most promising semiconductor systems of the new millennium. The specific area of application of ZnO, just as most semiconductor materials, is determined by manufacturing technology. |
| Intensive research of ZnO properties conducted worldwide covers the following lines: Light emitting diodes and semiconductor lasers for UV spectrum By its semiconductor properties ZnO is similar to GaN. It also shows piezoelectric characteristics. To add to this ZnO has remarkable optical qualities: the width of restricted zone is 3.4 eW and the energy of exiton connection amounts to 60 meW. High quality crystal substrates for GaN ZnO can provide an alternative to sapphire. The crystals are very similar in lattice structure and thermal expansion coefficient, and what is more, ZnO possesses better electrical characteristics, which makes it the preferable choice for this application. Sensor gadgets Due to the linear connection lnR(1/T) in the range of 100-450oC ZnO crystals can be used in temperature sensors. Besides, ZnO suits perfectly for pressure sensors and fire alarms because its crystal resistance depends on pressure and illumination. High temperature gadgets ZnO shows impressive stability of its elasticity, dielectric and piezoelectric properties when exposed to radioactive enviroment and temperature up to 700 K. The crystals display remarkable performance without any phase transitions. Acoustoelectronics The use of ZnO crystals in surface acoustic wave filters and resonators also shows very good perspective. Automated systems Electrical characteristics of ZnO crystals are unanimously applicable in automated systems and electrotechnical equipment. (varistors, sensors, starters, automatic switches etc.) Comparative Analysis of ZnO and Its Counterparts by Physical Characteristics: |
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