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4. Total-Ionizing-Dose Effects on a Graphene X-Ray Detector Laser-Scribed From Graphene Oxide.

Author

Deng, Ning-qin, Liao, Wen-jun, Hu, Jing, Wang, Peng, Xu, Meng-Xuan, Zhang, Hai-Nan, Wang, Pan, Liang, Chun-dong, Tian, He, Chen, Liang, Ouyang, Xiao-Ping, Yang, Yi, Ren, Tian-ling, Zhang, En Xia, and Fleetwood, Daniel M.

Subjects
*GRAPHENE oxide, *NUCLEAR counters, *X-rays, *ELECTROMAGNETIC waves, *IONIZING radiation
Abstract

We have evaluated the total-ionizing-dose response of graphene-based X-ray detectors fabricated from graphene oxide (GO) via laser scribing. Raman characterization shows that the resulting structures exhibit the desired conversion of GO to graphene; both high- and low-resistance detectors are formed. The detectors are quite radiation sensitive, as demonstrated by fast pulse testing. The response time of the detectors degrades with total-ionizing dose exposure as a result of electron trapping at residual oxygen from unreacted GO and/or adsorbed oxygen on the graphene surface. [ABSTRACT FROM PUBLISHER]

Published
2018
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