There are several methods to achieve bandgap engineering in nanomaterials:
Doping: Introducing impurities into a material can alter its electronic properties and effectively change its bandgap. Strain Engineering: Applying mechanical strain to nanomaterials can change the distances between atoms, thereby modifying the band structure. Quantum Confinement: Reducing the size of a material to the nanoscale can lead to quantum confinement effects, which significantly alter the bandgap. Alloying: Mixing different materials to form an alloy can result in a material with a bandgap that is different from either of the constituent materials.