Definition
Photoluminescence is luminescence produced after a material absorbs optical radiation, often at a longer wavelength than the excitation; the emission can have prompt or delayed components.
Application
Used to characterize semiconductor materials and structures by analyzing emitted spectra for composition, defects, electronic transitions, and process-related material quality.
Related concepts
Evidence and further reading
- Evidence from nist.govhttps://www.nist.gov/glossary-term/47276
- Evidence from nist.govhttps://www.nist.gov/publications/composition-standards-algaas-epitaxial-layers