Properties of CVD diamond film detector
Creators
- 1. Department of Engineering Physics, Tsinghua Univ., Beijing (China)
- 2. Northwest Inst. of Nuclear Technology, Xi'an (China)
- 3. Materials College, Univ. of Science and Technology Beijing, Beijing (China)
- 4. Xi'an Jiaotong Univ., Xi'an (China)
Description
The dark current, charge collection efficiency and time response properties of CVD diamond film detectors are studied based on experiments and their theoretical analysis. The results shows: No PN or PIN junctions are needed when preparing diamond detectors; charge collection efficiency of the detector will be reduced by defects in film, and it increases and reaches saturation along with the increasing electric field between the two electrodes. The charge collection time of our diamond film detector is about 719ps, and the charge collection efficiency can reach the saturation value of 60.5% under the electric field of 2.5 V/μm. Scattering of the lattice may slow the detector response, so it's necessary to improve CVD technology and choose diamond film with big grain size. (authors)
Additional details
Publishing Information
- Journal Title
- High Energy Physics and Nuclear Physics
- Journal Volume
- 31
- Journal Issue
- 12
- Journal Page Range
- p. 1112-1115
- ISSN
- 0254-3052
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 41073389
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- CHARGE COLLECTION; CHEMICAL VAPOR DEPOSITION; CRYSTAL COUNTERS; CRYSTAL DEFECTS; DIAMONDS; EFFICIENCY; ELECTRIC FIELDS; FILMS; GRAIN SIZE; LEAKAGE CURRENT; PERFORMANCE; SCATTERING; TIMING PROPERTIES
- Descriptors DEC
- CARBON; CHEMICAL COATING; CRYSTAL STRUCTURE; CURRENTS; DEPOSITION; ELECTRIC CURRENTS; ELEMENTS; MEASURING INSTRUMENTS; MICROSTRUCTURE; MINERALS; NONMETALS; RADIATION DETECTORS; SIZE; SURFACE COATING
Optional Information
- Notes
- 6 figs., 14 refs.