ScienceAugust 28, 2026
bandgap
BAND-gap
Definition
The energy range in a semiconductor where no electron states can exist, which determines the material's ability to absorb specific wavelengths of light.
Etymology
The term is a compound of 'band' (referring to energy bands in solid-state physics) and 'gap' (the energy interval between them), originating in the early 20th century to describe quantum mechanical properties of materials.
In the news
The article discusses achieving the 'required bandgap' in the perovskite top cell, which is crucial for maximizing the efficiency of the tandem solar cell structure.
Solvent-free perovskite-silicon tandem solar cell achieves 27.3% efficiency
Read the full article ↗pv magazine Global