Abstract
An infrared light sensor based on principle of a field emission from Pb(Zr, Ti)O 3 (PZT) thin plate has been studied. The sensitivity is able to be improved to perform a surface polish, and the emission efficiency of polished emission plane increased to twice than that of the unpolished emission plane. On a low infrared light irradiation condition, a noise level of emission current was very large. To use a micro-channel-plate (MCP) device, the amplification of the emission electrons was carried out. The emission electrons could be multiplied 40 times, the emission electron was clearly observed under low irradiation conditions. The electron emission-type infrared light sensor is also useful to detect an infrared light on low irradiation condition.
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