What is PEC?

PEC can refer to several technologies, making it ambiguous without further context. Some possibilities include: * **Photoelectrochemical Cells (PEC):** These are used for solar energy conversion, directly converting sunlight into chemical fuels like hydrogen or electricity using semiconductor photoelectrodes in an electrolyte. * **Personal Email Certification (PEC) [Italian]:** PEC is a certified email system in Italy that provides legal validity to electronic communications, similar to registered mail. It guarantees the sender proof of sending and delivery, as well as the integrity of the message contents. * **Process Execution Controller (PEC):** This can refer to a component in industrial automation systems that manages and controls the execution of processes. This is likely proprietary depending on the manufacturer. To provide a more accurate explanation, please specify which PEC technology you are interested in.