4H-SiC Position-sensitive Detector Working in Extreme Ultraviolet Wavelength Band

Extreme ultraviolet (EUV) detectors are essential components required in many cutting-edge applications. In this work, a 6.5 mm × 6.5 mm large-area 4H-SiC EUV position sensitive detector (PSD) has been design and fabricated. Based on a synchrotron radiation test system, the SiC PSD exhibits a relatively low position error of 63 μm, a low nonlinearity of 2.1% and a high position resolution of 8.5 μm. The detector also realizes a low dark current of 9 pA, a high responsivity of 0.06 A/W and a low photo-response non-uniformity of less than 1% at 13.5 nm. Together with the superior transient response and stable switching performance, the SiC PSDs present notable potential in high-end EUV position detection applications.