Vim li cas liab xim coj chips qauv txawv ntawm xiav thiab ntsuab coj chips?
Liab, xiav, thiab ntsuab LEDs (Lub Teeb Emitting Diodes) yog tsim los ntawm cov khoom sib txawv ntawm cov khoom siv semiconductor, thiab lawv cov qauv sib txawv yog qhov tshwm sim ntawm cov khoom tshwj xeeb ntawm cov ntaub ntawv no.
Liab LEDs:
Cov LEDs liab feem ntau yog tsim los ntawm aluminium gallium arsenide (AlGaAs) lossis aluminium indium gallium phosphide (AlInGaP) cov khoom siv semiconductor.
Cov ntaub ntawv no muaj ib tug dav bandgap, uas txhais tau hais tias lawv emit tsawg-zog photons nyob rau hauv lub liab ib feem ntawm pom spectrum.
Cov qauv ntawm LEDs liab suav nrog ntau txheej txheej semiconductor uas tso cai rau kev ua kom muaj txiaj ntsig zoo ntawm cov hluav taws xob thiab qhov, ua rau lub teeb liab tawm.
Blue LEDs:
Blue LEDs feem ntau yog tsim los ntawm indium gallium nitride (InGaN) cov khoom siv semiconductor.
InGaN muaj qhov nqaim bandgap, tso cai rau nws tso tawm ntau dua-zog photons nyob rau hauv xiav ib feem ntawm qhov pom spectrum.
Blue LEDs xav tau kev tswj xyuas meej dua ntawm cov txheej txheem kev loj hlob siv lead ua thiab feem ntau muaj ntau lub qhov dej quantum nyob rau hauv cov qauv semiconductor kom ua tiav lub teeb xiav emission.
Green LEDs:
Green LEDs tuaj yeem tsim los ntawm ntau yam khoom siv semiconductor, xws li aluminium gallium indium phosphide (AlGaInP) lossis lwm yam kev sib txuas.
Lub bandgap ntawm cov ntaub ntawv no yog nruab nrab ntawm cov liab thiab xiav LEDs, cia lawv emit ntsuab teeb.
Green LEDs kuj tseem tuaj yeem koom nrog ntau cov txheej txheem semiconductor txheej txheej los ua kom zoo dua qhov emission ntawm lub teeb ntsuab zoo.
Cov qauv sib txawv ntawm cov xim liab, xiav, thiab ntsuab LED chips feem ntau yog tsav los ntawm qhov xav tau kom phim cov bandgap ntawm cov khoom siv semiconductor nrog cov xim uas xav tau ntawm lub teeb emission. Txhua cov khoom siv semiconductor muaj nws cov khoom tshwj xeeb, thiab cov txheej txheem tsim khoom rau txhua hom LED yuav muaj kev hloov pauv hauv kev loj hlob siv lead ua, doping, thiab lwm yam kom ua tiav qhov xav tau wavelength ntawm emitted lub teeb.
