radiação espectro solar

[cmicaelo]

boa noite, alguem me pode elucidar qual a radiação do espectro solar é responsável pelo efeito fotovoltaico?

[HLopes]

photoelectron spectroscopy

since the energy of the photoelectrons emitted is exactly the energy of the incident photon minus the material's work function or binding energy, the work function of a sample can be determined by bombarding it with a monochromatic x-ray source or uv source (typically a helium discharge lamp), and measuring the kinetic energy distribution of the electrons emitted.

solar cells (used in solar power) and light-sensitive diodes use a variant of the photoelectric effect, but not ejecting electrons out of the material. in semiconductors, light of even relatively low energy, such as visible photons, can kick electrons out of the valence band and into the higher-energy conduction band, where they can be harnessed, creating electric current at a voltage related to the bandgap energy.

linque

[Njay]

nas células de silicio tipicas anda na zona dos infra-vermelhos.
mas existem outros materiais que são mais sensíveis a outras bandas (mas são células mais caras e especializadas (como para aplicações aeroespaciais), pois é mais dificil processar esses outros materiais).