PHOTOEMISSION PROPERTIES OF THE MULTIALKALI PHOTOCATHODE
V.S. Rusetsky1, V.A. Golyashov1,2, A.V. Mironov3, A. Yu. Demin3, O. E. Tereshchenko1,2
1Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
3CJSC "Ekran-FEP", Novosibirsk, Russia
Keywords: Multialkali photocathode, energy distribution curve, vacuum photodiode, solar element, negative electron affinity
Abstract
The use of the vacuum photodiode with two semiconductor electrodes for studying the multialkali photocathode (MP) photoemission properties was demonstrated in this work. The photoluminescence and quantum efficiency spectra were studied; the high-resolution energy distribution curves for the MP were obtained for the first time. The measurements were performed under illumination of the MP in the spectral range of 400-950 nm and the temperature range of 90-300 K. Using the data obtained the conclusion, that the MP is a photocathode with effective negative electron affinity, was made. The properties of the solar element based on the vacuum photodiode were studied.
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