Photocathodes for a post-processed imaging array


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
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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