Pyroelectric detector
A pyroelectric detector and electrode technology, applied in the field of pyroelectric detection, can solve the problems of limited detector response rate and detection rate, low sensitivity and signal-to-noise ratio, and low pyroelectric coefficient, so as to improve sensitivity and detection rate , maintain polarization characteristics, increase the effect of service life
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[0030] The pyroelectric detector provided by the present invention includes an opaque sealed casing, a response element located in the casing and a signal output interface, and the casing has a transparent window for receiving external electromagnetic radiation. The response element has an upper electrode and a lower electrode, and the upper electrode and the lower electrode of the response element are electrically connected to the signal output interface; the response element is placed at a distance of 1 mm to 5 mm from the transparent window, and the upper electrode faces the The above transparent window. The transparent window can adopt the structure of a wide-angle lens so as to receive external electromagnetic radiation at a large angle.
[0031] Such as figure 1 As shown, the response element of this embodiment includes sequentially stacked Nb:SrTiO 3 Substrate 1, CCTO thin film 2 and ITO thin film 3 after polarization; The Nb:SrTiO 3 The substrate forms the lower ele...
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