Can CdSe Band Gap Be Tuned By Changing Particle Size Or Shape?

Yes, the band gap of the compound CdSe can be tuned by changing the particle size or shape. This phenomenon is known as quantum confinement. When the size of the CdSe particles is reduced to the nanoscale, the confinement of the electrons and holes within the material leads to a quantization of energy levels. This quantization results in an increase in the band gap energy of the material with decreasing particle size, which can be tuned by controlling the size or shape of the particles. Additionally, the surface chemistry of the CdSe particles can also affect the band gap energy due to the formation of surface states.