Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986spie..627..543j&link_type=abstract
IN: Instrumentation in astronomy VI; Proceedings of the Meeting, Tucson, AZ, Mar. 4-8, 1986. Part 2 (A87-36376 15-35). Bellingha
Astronomy and Astrophysics
Astronomy
5
Charge Coupled Devices, Flash, Gates (Circuits), Quantum Efficiency, Spaceborne Telescopes, Electric Current, Energy Gaps (Solid State), Epitaxy, N-Type Semiconductors, P-N Junctions
Scientific paper
Preliminary findings are presented for a new approach that significantly improves the quantum efficiency of the current generation of high-performance, thinned, backside illuminated silicon CCDs. Experiments have shown that the application of a less than 4-micron thick layer of metal with high work function to the backside of the CCD can yield 100-percent internal quantum efficiency in the visible, UV, XUV and soft X-ray regions of the spectrum. Theory and solid state models describing the new technique (the 'CCD flash gate'), and a considerable amount of experimental data, are discussed. Specific recommendations for use of the flash gate in present and future CCDs are also reviewed.
Campbell Dave
Daud Taher
Elliott Tom
Janesick James
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