Iyo umuyaga unyuze muri wafer, electron muri semiconductor ya N yo mu bwoko bwa N hamwe nu mwobo uri mu bwoko bwa P-semiconductor iragongana bikabije hanyuma igahurira mu gice cyohereza urumuri kugira ngo ikore fotone, isohora ingufu mu buryo bwa fotone (ni ukuvuga , urumuri abantu bose babona).Semiconductor yibikoresho bitandukanye izabyara amabara atandukanye yumucyo, nkitara ritukura, itara ryatsi, urumuri rwubururu nibindi.

Hagati yibi byiciro bibiri bya semiconductor, electron nu mwobo birahura bigahura kandi bigatanga fotone yubururu murwego rwohereza urumuri.Igice cyurumuri rwubururu rwakozwe ruzahita rusohoka binyuze muri fluorescent;igice gisigaye kizakubita kuri fluorescent coating hanyuma kikorane nayo kugirango ikore fotone yumuhondo.Photon yubururu na foton yumuhondo ikorana (ivanze) kugirango itange urumuri rwera.