Mumakore makumi matanhatu ezana ramakore rapfuura, vashandi vesainzi uye tekinoroji vakashandisa musimboti we semiconductor PN junction luminescence kugadzira LED light-emitting diodes.Iyo LED yakagadzirwa panguva iyoyo yakashandisa GaASP, ruvara rwayo runopenya rwakatsvuka.Mushure meanoda kusvika makore makumi matatu ebudiriro, iyo LED iyo munhu wese anonyatsoziva nayo yakakwanisa kuburitsa tsvuku, orenji, yero, yegirinhi, yebhuruu nemamwe marambi eruvara.Nekudaro, iyo chena LED yekuvhenekesa yakagadziridzwa chete mushure me2000, uye muverengi anounzwa kune chena LED yekuvhenekesa.Iyo yekutanga mwenje sosi ye LED yakagadzirwa semiconductor PN junction luminescence musimboti yakabuda mukutanga 60s yezana ramakore rechi20.
Zvinhu zvakashandiswa panguva iyoyo yaive GaAsP, iyo yaipenya tsvuku (λp = 650nm), uye pakutyaira ikozvino 20 mA, iyo inopenya inoyerera yaingova zviuru zvishoma zvemalumens, uye inoenderana nekupenya kwayo kwaiita 0.1 lumens pa watt. .Pakati pe-70s, zvinhu zveIn neN zvakaunzwa kuita kuti maLED abudise mwenje yegirinhi ( λp = 555nm), yero ( λp = 590nm) uye mwenje weorange ( λp = 610nm), uye kushanda kwemwenje kwakawedzerwa kusvika 1. lumen/watt.Pakazosvika 80s, iyo GaAlAs LED mwenje sosi yakaonekwa, ichiita iyo tsvuku yemwenje ye LED inokwanisa kusvika gumi lumens pa watt.Mukutanga kwe90s, zvinhu zviviri zvitsva, GaAlInP, iyo inobudisa chiedza chitsvuku uye chero, uye GaInN, iyo inobudisa chiedza chegirini nebhuruu, yakabudirira kugadzirwa, iyo yakavandudza zvikuru chiedza che LED.Muna 2000, iyo LED yakagadzirwa yekare yakawana mwenje we100 lumens/watt munzvimbo dzvuku neorenji (λp = 615nm), nepo LED yakagadzirwa neyekupedzisira yaigona kusvika makumi mashanu lumens/watt munzvimbo yakasvibira (λp= 530nm).
Nguva yekutumira: Nov-11-2022