The diamond radiation detector with an Ohmic contact using diamond-like carbon interlayer
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-05-01 |
| Journal | Materials Research Innovations |
| Authors | Zhigang Pan, Kaiqiang Qin, J. Zhou, Hongtao Yu, Run Xu |
| Institutions | Shanghai University |
| Citations | 3 |
Abstract
Section titled āAbstractāA diamond-like carbon thin layer was used as an interlayer between a free-standing diamond substrate grown by microwave plasma enhanced chemical vapour deposition and a Pt/Au layer. The dark-current of about 5Ā·0 pA cmā2 was found for this detector at an electric field of 200 V cmā1. Ohmic contact was achieved by this diamond-like carbon/Pt/Au trilayer structure as evidenced by a linear dark I-V curve. The ratios of photocurrent to dark-current were about 26 and 35 for diamond detectors with Ti/Pt/Au and diamond-like carbon/Pt/Au trilayer electrodes, respectively. The energy resolution for the diamond detector with diamond-like carbon/Pt/Au electrode was about 3Ā·30%, better than 4Ā·56% for the detector with Ti/Pt/Au electrode.