Kana yazvino ichipfuura nepawafer, maerekitironi ari muN-type semiconductor uye maburi ari muP-type semiconductor anodhumhana nechisimba uye anosanganazve muchikamu chinobudisa chiedza kuti abudise maphotons, ayo anoburitsa simba muchimiro chephotons (ndiko kuti. , chiedza chinoonekwa nemunhu wese).Semiconductors yemhando dzakasiyana-siyana ichabudisa mavara akasiyana-siyana echiedza, akadai sechiedza chitsvuku, chiedza chegirini, chiedza chebhuruu uye zvichingodaro.

Pakati pezvikamu zviviri zvemasemiconductors, maerekitironi nemakomba zvinodhumhana uye zvinobatana uye zvinogadzira mafotoni ebhuruu muchikamu chinobudisa chiedza.Chikamu chechiedza chebhuruu chinogadzirwa chichabudiswa zvakananga kuburikidza nemucheka wefluorescent;chikamu chasara chicharova fluorescent coating uye kupindirana nacho kugadzira yellow photons.Iyo yebhuruu photon uye yero photon inoshanda pamwe chete (yakasanganiswa) kuti ibudise chiedza chichena.