noun
photodiode
A semiconductor device that converts light into an electrical current. Used in electronics and optical sensors.
フォトダイオードは光を電気信号に変換する。
A photodiode converts light into an electrical signal.
An LED emits light when current flows, while a photodiode generates current when it receives light.
Loanword from English 'photodiode', combining 'photo-' (light) and 'diode'.