What is a Photoelectric element?

Photoelectric device is a general term for electronic devices that control conversion between light energy and electrical energy. Broadly speaking, there are light-emitting elements that convert electrical signals into optical signals, and light-receiving elements that convert optical signals into electrical signals. A light-emitting element is an element that emits light when an electric current is passed through it, and a typical example is a light-emitting diode. Light bulbs and fluorescent lights also emit light by passing current through them, but light-emitting elements are generally limited to those using semiconductors and do not include them. Photodetectors receive light and generate current, and solar cells are one example.

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