@prefix sampledescriptionvocabulary1: <https://purls.helmholtz-metadaten.de/skosmos/sdv/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <http://server/unset-base/> .

sampledescriptionvocabulary1:OpticalBandgap
  skos:prefLabel "Optical bandgap" ;
  skos:definition "1. Determines what portion of the solar spectrum a photovoltaic cell absorbs. (Wikipedia). 2. The optical band gap is the energy required for an electron to be excited from the valence band to the conduction band, specifically when interacting with light (photons). (https://www.quora.com/What-is-the-difference-between-optical-and-electronic-band-gap)"^^ns0:None ;
  skos:broader sampledescriptionvocabulary1:OpticalProperty ;
  a skos:Concept .

sampledescriptionvocabulary1:OpticalProperty
  skos:prefLabel "Optical property" ;
  a skos:Concept ;
  skos:narrower sampledescriptionvocabulary1:OpticalBandgap .