半導体セラミック単繊維による赤外線感知

概要

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Infrared sensing properties were investigated on thermal-type IR sensors using semiconducting ceramic monofiber of SiC (Nicalon), and PAN-based carbon with different diameters (7-130μm). Thermal time constant of the monofiber IR sensor increased with increasing fiber diameter. An IR sensor made of SiC monofiber with a low resistivity (18 Ω・cm) and of a short length (1 mm) showed a small thermal time constant of 1.6 ms. The output voltage increased with in-creasing radiation energy of IR source and decreasing surrounding temperature. PAN-based carbon mono-fiber having a resistivity above 200 Ω・cm detected an IR radiation from human hand with a steady output voltage at room temperature. Semiconducting ceramic monofibers were found to be promising materials for IR sensors.
社団法人日本セラミックス協会の論文
1991-07-01