Exciton generation

Exciton generation occurs when a photon, a particle of light, is absorbed by a material like a semiconductor. The energy from the photon excites an electron, causing it to jump to a higher energy level, leaving behind a positive charge called a hole. The electron and hole are attracted to each other and form a bound state known as an exciton. This exciton can transport energy across the material without transferring net charge, playing a vital role in devices like solar cells and light-emitting diodes by enabling efficient energy transfer and conversion.