E pei ona tatou iloa uma, o le ultraviolet light-emitting diodes o semiconductor e faʻauluina le malamalama i se umi faʻapitoa pe a pasi atu le malamalama. O LED ua lauiloa o masini malo. O le tele o kamupani latou te gaosia meataalo LED fa'avae UV mo faiga fa'apisinisi,
meafaigaluega faafomai
, masini fa'ama'i ma fa'amama fa'ama'i, masini fa'amaonia pepa, ma isi mea. E mafua ona o latou substrate ma mea aoga. E fa'amanino ai LED, maua i se tau maualalo, fetu'una'i le voltage, ma fa'aitiitia ai le malosi o le moli mo le fa'aoga lelei.