Photocathodes for a post-processed imaging array


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Melai, Joost and Lyashenko, Alexey and Breskin, Amos and Graaf, Harry van der and Timmermans, Jan and Visschers, Jan and Salm, Cora and Schmitz, Jurriaan (2009) Photocathodes for a post-processed imaging array. In: 12th Annual Workshop on Semiconductor Advances for Future Electronics and Sensors, SAFE, 26-27 November 2009, Veldhoven, The Netherlands (pp. pp. 32-35).

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Abstract:Preliminary results of a photon detector combining a Micromegas like multiplier coated with a UV-sensitive CsI photocathode are described. The multiplier is made in the CMOS compatible InGrid technology, which allows to post-process it directly on the surface of an imaging IC. This method is aimed at building light-sensitive imaging detectors where all elements are monolithically integrated. We show that the CsI photocathode deposited in the InGrid mesh does not alter the device performance. Maximum gains of ~6000 were reached in a singlegrid element operated in Ar/CH4, with a 2% Ion Back Flow fraction returning to the photocathode.
Item Type:Conference or Workshop Item
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Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/69062
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