Mumakore ekuma1960, vashandi vesainzi uye vetekinoroji vakagadzira madhidhiyo emwenje-emitting e LED vachishandisa musimboti we semiconductor PN junction light-emitting.Iyo LED yakagadzirwa panguva iyoyo yakagadzirwa neGaASP, uye ruvara rwayo rwakatsvuka.Mushure meanoda kusvika makore makumi matatu ebudiriro, iyo inozivikanwa LED inogona kuburitsa tsvuku, orenji, yero, girini, bhuruu uye mamwe mavara.Zvisinei, ma LED machena ekuvhenekera akagadzirwa chete mushure me 2000. Pano, vaverengi vanoiswa kune machena ma LED ekuvhenekera.

develop

Iyo yekutanga mwenje sosi ye LED yakagadzirwa semiconductor PN junction light-emitting musimboti yakabuda mukutanga 1960s.Zvinhu zvakashandiswa panguva iyoyo iGaAsP, inoburitsa mwenje dzvuku (λp = 650nm).Kana iko kutyaira kuri 20 mA, iyo inopenya inoyerera ingori zviuru zvishoma zvemalumens, uye inoenderana inopenya inopenya ingangoita 0.1 lumen/watt.

Pakati pemakore ekuma1970, zvinhu zveIn neN zvakaunzwa kuita kuti maLED abudise chiedza chegirini (λp=555nm), yero (λp=590nm) uye orange light (λp=610nm), uye kupenya kwacho kwakawedzerawo kusvika pa1. lumen/watt.

Mukutanga 1980s, LED magetsi masosi eGaAlAs akaonekwa, zvichiita kuti kupenya kunoshanda kwema LED matsvuku kusvike gumi lumens/watt.

Mukutanga kwema1990, zvinhu zviviri zvitsva, GaAlInP, iyo inobudisa chiedza chitsvuku uye chero, uye GaInN, iyo inobudisa chiedza chegirini nebhuruu, yakabudirira kugadzirwa, iyo yakavandudza zvikuru kushanda kunopenya kwe LED.

Muna 2000, kupenya kunoshanda kwema LED akaitwa neakare akasvika zana malumens pawatt munzvimbo dzvuku neorenji (λp = 615nm), ukuwo kupenya kwemagetsi eLED akaitwa neakupedzisira munzvimbo yakasvibira (λp = 530nm) inogona kusvika 50 lumens./watt.