What are optoelectronic devices? Give the names of such major devices.

(N/A) Optoelectronic devices are semiconductor devices that convert light energy into electrical energy or vice versa,based on the interaction of light with semiconductor materials.
The major optoelectronic devices are as follows:
$(1)$ Photodiodes: These are used for detecting optical signals (photodetectors).
$(2)$ Light Emitting Diodes $(LED)$: These devices convert electrical energy into light energy.
$(3)$ Photovoltaic devices: These convert optical radiation into electricity (e.g.,solar cells).