photocathode

[ foh-toh-kath-ohd ]

noun

1. a cathode, typically of a cesium or sodium compound, having the property of emitting electrons when activated by light or other radiation.

photocathode

/ ˌfəʊtəʊˈkæθəʊd /

noun

1. a cathode that undergoes or is used for photoemission

Word History and Origins

Origin of photocathode¹

First recorded in 1925–30; photo- + cathode

Example Sentences

Tests of a copper oxide light harvester, or photocathode, based on this fabrication technique showed a 70% improvement over existing state-of-the-art oxide photocathodes, while also showing greatly improved stability.

From Science Daily

Inside is a small black square: a new titanium dioxide-coated photocathode.

From Nature

Silicon, for instance, makes a good photocathode — the electrode that produces hydrogen gas — but is stable only when the solution around it is acidic.

From Nature