AUTHOR=Yang Tao , Tan Yuhang , Liu Qing , Xiao Suyu , Liu Kai , Zhang Jianyong , Kiuchi Ryuta , Zhao Mei , Zhang Xiyuan , Wang Congcong , Wu Boyue , Lin Jianing , Song Weimin , Lu Hai , Shi Xin 

TITLE=Time Resolution of the 4H-SiC PIN Detector

JOURNAL=Frontiers in Physics

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2022.718071

DOI=10.3389/fphy.2022.718071

ISSN=2296-424X

ABSTRACT=We report the time resolution of 100um 4H-SiC PIN detectors which are fabricated by Nanjing University (NJU). The time responses for $\rm \beta$ particle from Sr-90 source are investigated for the detection of the minimum ionizing particles (MIPs). The influences of different reverse voltages which correspond to carrier velocity and device sizes which correlate with capacitance for time resolution are studied. We acquired a time resolution (94 +-1)  ps for 100 um 4H-SiC PIN detector. A fast simulation software - RASER (RAdiation SEmiconductoR) has been developed to simulate the time resolution of 4H-SiC detector, and the simulation has been validated by the waveform comparison of RASER simulation and measured data. The simulated time resolution is (53 +- 1) ps after consider the intrinsic leading contributions of detector in time resolution.