Development of Highly Efficient and High Speed X-ray Detectors Using Modern Nanomaterials

Journal Article · Fri Jan 19 00:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2436254· OSTI ID:21049210

Cholewa, Marian; Moser, Herbert O ^[1]; Lau, Shu Ping ^[2]; Xingyu, Gao; Wee, Andrew Thye Shen ^[3]; Polak, Wojciech; Lekki, Janusz; Stachura, Zbigniew ^[4]

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1. Singapore Synchrotron Light Source, National University of Singapore (Singapore)
2. School of Electrical and Electronic Engineering, Nanyang Technological University (Singapore)
3. NUSNNI, Physics Department, National University of Singapore (Singapore)
4. Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Science, Cracow (Poland)

The secondary electron emission (SEE) yield of heterostructures of ZnO nanoneedles coaxially coated with AlN or GaN has been studied for the first time using electron, ion, and X-ray beams. The SEE yield of the heterostructures is enhanced significantly by the intrinsic nanostructure of the ZnO nanoneedle templates as compared to the AlN and GaN thin films on Si substrates. These findings open up a way to develop new universal highly efficient radiation detectors based on the SEE principle by incorporating these one-dimensional (1D) nanostructures as a material of choice.

• OSTI ID: 21049210
• Journal Information: AIP Conference Proceedings, Vol. 879, Issue 1; Conference: 9. international conference on synchrotron radiation instrumentation, Daegu (Korea, Republic of), 28 May - 2 Jun 2006; Other Information: DOI: 10.1063/1.2436254; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALUMINIUM NITRIDES
ELECTRON BEAMS
ELECTRON EMISSION
ELECTRONS
GALLIUM NITRIDES
ION BEAMS
NANOSTRUCTURES
SILICON
SUBSTRATES
THIN FILMS
X RADIATION
X-RAY DETECTION
ZINC OXIDES