KnowraColor centerLinked fromLinked fromThe 9 pages that link to Color center, each with the reason it gives.All 9Broader topic 2Related 5Narrower topic 1Compared with 1Point defectBroader topic: Certain vacancies trap electrons or holes, giving crystals distinctive optical absorption.Vacancy defectBroader topic: Some vacancy-related defects trap electrons and produce characteristic optical absorption.