An Antenna-Coupled Warm Carrier Device Using Polycrystalline Ge Films

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<jats:p> Evaporated Ge films were used as antenna-coupled point-contact warm carrier devices. The carrier mobilities of the deposited films increased with the increase of the substrate temperature and showed 10-100 cm<jats:sup>2</jats:sup>/V·s for the films deposited above 300°C. A CO<jats:sub>2</jats:sub> laser signal was detected by the point-contact devices fabricated from those films. This indicated the potential of the realization of antenna-coupled thin-film warm carrier devices. </jats:p>

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