Photoemission Properties of a Multialkali Photocathode

• Published in: Optoelectronics, instrumentation, and data processing Vol. 57; no. 5; pp. 505 - 510
• Main Authors: Rusetsky, V. S., Golyashov, V. A., Mironov, A. V., Demin, A. Yu, Tereshchenko, O. E.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-09-2021
• Subjects: Lasers; Optical Devices; Optics; Photonics; Physics; Physics and Astronomy; vacuum photodiode; negative electron affinity; energy distribution curve; multialkali photocathode; solar cell
• ISSN: 8756-6990; 1934-7944
• DOI: 10.3103/S8756699021050149

The feasibility of studies on the photoemission properties of multialkali photocathodes (MPs) in vacuum photodiodes with two semiconductor electrodes was demonstrated. The photoluminescence and quantum yield spectra were studied, and the high-resolution energy distribution curves of photoelectrons emitted from the MP were taken for the first time. Measurements were performed on multialkali photocathodes illuminated with monochromatic light within a wavelength range of 400–950 nm in a temperature range of 90–300 K. Based on the obtained data, the conclusion, that the MP is a negative electron affinity photocathode, was made. The properties of the solar element based on the studied vacuum photodiode were investigated.