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http://dx.doi.org/10.4313/TEEM.2017.18.3.176

A Study on Operating Lifetime of Cs3Sb Emitters in Panel Device Applications  

Jeong, Hyo Soo (Department of Electrical Materials Engineering, University of Suwon)
Publication Information
Transactions on Electrical and Electronic Materials / v.18, no.3, 2017 , pp. 176-179 More about this Journal
Abstract
Non-vacuum processing technology was used to produce $Cs_3Sb$ photocathodes on substrates and fabricate in-situ panel devices. Electrical properties of these panel devices were characterized by measuring anode current and charge dose as functions of devices operation time. An excitation light source with a 475 nm wavelength was used for photocathodes. Results showed that emission properties of these photocathode emitters depended heavily on the vacuum level of these devices and that $Cs_3Sb$ flat emitters had the potential of operating for a long lifetime with stable electron emission characteristics via re-cesiation process in the panel device. These features make $Cs_3Sb$ photocathodes suitable as flat emitters in panel device applications.
Keywords
Photocathode; Quantum efficiency; Current density; Excitation source; Spectral range;
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