Study of semi-transparent conductive layers for the realization of high quantum efficiency transmission mode CsI photocathodes for vacuum photodetectors. (18th July 2017)

• Record Type: Journal Article
• Authors: Barbato, F.C.T.; Valentini, A.; Casamassima, G.; Campajola, L.; Capua, F. Di
• Is Part Of: Journal of instrumentation. Volume 12:Number 7(2017:Jul.)
• Page Start: T07005
• Page End: T07005
• Publication Date: 2017-07-18
• Subjects: Photocathodes and their production -- Photon detectors for UV, visible and IR photons (gas) (gas-photocathodes, solid-photocathodes); Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/12/07/T07005
• Languages: English
• ISSNs: 1748-0221

Abstract

Abstract: We worked on the R&D of an innovative photodetector, the Vacuum Silicon Photomultiplier Tube (VSiPMT). The VSiPMT is composed by a photocathode and a solid state amplification stage. A semi-transparent conductive layer is necessary to supply voltage and to obtain a highly efficient CsI photocathode. Since the literature is poor on this topic we performed a systematic and detailed study of a set of semi-transparent conductive layers, made by different material and thickness. A CsI photocathode was evaporated on each sample. The impact of the semi-transparent conductive layer on the quantum efficiency of the photocathode is discussed.