a mobile neutral entity in a crystalline solid consisting of an excited electron bound to the hole produced by its excitation
Word origin
C20: from excit(ation) + -on
exciton in American English
(ɛkˈsaɪtɑn; ˈɛksəˌtɑn)
noun
a localized, electrically neutral, excited state that allows the transfer of energy but not electric charge through a semiconductor, insulator, etc., as an electron bound to a positive hole