GaN-based semiconductor LED teeb pom kev zoo muaj qhov zoo ntawm kev ua haujlwm siab, lub zog txuag, kev tiv thaiv ib puag ncig, lub neej ntev thiab kev txij nkawm yooj yim. Nws yog lwm txoj kev hloov teeb pom kev zoo hauv keeb kwm ntawm tib neeg teeb pom kev tom qab incandescent thiab fluorescent teeb. Nrog rau kev tsim cov thev naus laus zis, hloov pauv hloov khoom siv thev naus laus zis thev naus laus zis yuav maj mam dhau los ua lub luag haujlwm tseem ceeb yav tom ntej, thiab kev npaj hloov pauv hloov GaN tau dhau los ua kev tshawb fawb hotspot uas nyiam thoob ntiaj teb niaj hnub no.
Vim tias tus nqi siab ntawm cov khoom lag luam loj nitride substrates, nitride cov yeeb yaj kiab feem ntau yog epitaxially los ntawm cov khoom siv heterogeneous substrates xws li sapphire thiab silicon. Muaj cov lattice tsis sib haum nruab nrab ntawm cov siv lead ua hluav taws xob thiab cov nitride, uas ua rau muaj kev ntxhov siab loj ntawm cov epitaxial GaN nyias zaj duab xis, thiab ua kom muaj ntau ntawm kev nkag mus rau qhov tsis zoo, uas ua rau txo qis luminous efficiency ntawm cov khoom siv LED. Yog li ntawd, kev npaj ntawm kev tsis tshua muaj siab, zoo GaN zaj duab xis yog qhov tshwj xeeb rau kev txhim kho ntawm LED ua haujlwm.
Tam sim no, laser nqa-tshuab thev naus laus zis yog cov qauv tseem ceeb rau kev npaj hloov tau GaN yooj yim, tab sis tsis sib luag laser zog ntom ntom ntom ntom ntom ntom ua rau GaN nyias zaj duab xis tiv thaiv, thiab nws nyuaj rau tau txais qhov loj-cheeb tsam txuas ntxiv thiab tsis rhuav tshem GaN nyias zaj duab xis, uas tiag hinders txoj kev loj hlob ntawm GaN hloov khoom siv. Cov.
Pab pawg tau kawm thiab tshawb pom txog kev xaiv nucleation mechanism ntawm nitride ntawm graphene, pom qhov chaw zoo tshaj plaws ntawm AlN, thiab ua tiav tiav qhov zoo, tsis muaj kev ntxhov siab tsis muaj GaN epitaxial txheej. Thiab los ntawm kev ua kom zoo dua ntawm cov txheej txheem tshem tawm, tsawg-kev puas tsuaj, thaj chaw loj-tshem tawm ntawm GaN epitaxial txheej tiav. Cov duab xaim hluav taws xob teeb ua raws li cov khoom siv hloov tau GaN ua tiav ultra-siab lub teeb tso zis hluav taws xob ntawm lub zog me me. Cov txiaj ntsig kev tshawb fawb tau ua pov thawj qhov tseem ceeb ntawm kev rho tawm hloov chaw kom ua tiav GaN-based yooj hloov teeb pom kev zoo thiab LEDs kom ua tiav txoj haujlwm zoo ntsug kev teeb tsa yav tom ntej.
Los ntawm LEDInside
