Lub neej yav tom ntej ntawm cov xim ntsuab nti LED teeb pom kev zoo yuav tsom rau kev tshawb nrhiav
Qhov kawg ntawm lub xyoo dhau los, semiconductor teeb pom kev zoo pib tsim thiab kev loj hlob sai, ib qho ntawm qhov tseem ceeb hauv tsev yog qhov kev loj hlob ntawm Blu-Ray GaN-based luminescent cov ntaub ntawv thiab cov cuab yeej ntaus ntawv, thiab theem siab ntawm cov khoom siv thiab cov tshuab ntaus ntawv txiav txim siab txog qhov siab ntawm lub tshuab hluav taws xob hluav taws xob. Cov ntaub ntawv GaN-raws li thiab cov khoom siv los ntawm cov khoom siv, cov khoom siv, cov qauv tsim, nti tshuab, nti cov ntawv thiab lwm yam ntawm tsib qhov kev tshuaj ntsuam.
Khoom siv
Nyob rau hauv rooj plaub uas muaj cov khoom siv loj hauv GaN tib neeg tsis tuaj yeem npaj ua ntej, MOCVD yog ib qho khoom siv hlau cov khoom siv hlau ua kua dej uas tseem yog qhov tseem ceeb tshaj plaws rau GaN heteroepitaxy. Cov kev lag luam MOCVD kev lag luam tam sim no yog los ntawm ob lub thoob ntiaj teb Giants rau tus tswv, nyob rau hauv qhov teeb meem no Tuam Tshoj MOCVD tseem ua tau zoo tshaj plaws, thiab tshwm sim ntawm 48 cov tshuab.
Tab sis peb tseem xav tau kom paub txog cov kev tsis haum ntawm MOCVD. Rau cov MOCVD, feem ntau, qhov tseem ceeb ntawm cov khoom siv tshawb fawb yog qhov ntsuas kub, cov khoom siv lag luam yog cov teeb meem, rov ua dua thiab lwm yam. Thaum tsis muaj kub, siab Nyob hauv cov dej muaj peev xwm loj hlob tuaj InGaN, tsim rau cov khoom siv nitride hauv cov txiv kab ntxwv daj, xim liab, paj hlwb thiab lwm cov ntaub ntawv ntev ntev, kom cov ntaub ntawv nitride npog tag nrho cov kab teeb ci dawb; thiab 1200oC-1500oC siab kub hnyiab, tuaj yeem loj hlob Txheej txheem AlGaN, nitride daim ntaub ntawv txuas mus rau thaj tsam ntawm ultraviolet thiab cov hluav taws xob hluav taws xob, qhov uas cov ntawv thov kom tau ntau dua kev nthuav dav.
Tam sim no, txawv teb chaws twb muaj 1600oC siab kub MOCVD cov khoom, tuaj yeem tsim high-performance UV LED thiab cov khoom siv fais fab. Tuam Tshoj MOCVD tseem xav tau kev txhim kho mus sij hawm ntev, kom nthuav dav MOCVD qhov kub siab; rau cov khoom siv lag luam tsis yog los txhim kho kev ua haujlwm xwb, tab sis kuj yuav tsum ua kom tsis muaj kev sib npaug thiab teev.
Tau qhov twg los
Cov khoom siv mas nws muaj ntau hom khoom siv roj, khoom siv hlau, khoom siv substrate thiab lwm yam. Ntawm lawv, cov ntaub ntawv substrate yog qhov tseem ceeb tshaj plaws, ncaj qha rau kev txwv ntawm kev ua yeeb yam epitaxial. Tam sim no, GaN-raws li substrate ntau ntau thiab ntau ntau yam, SiC, Si thiab GaN thiab lwm cov tshuab siv substrate maj ntau, ib feem ntawm cov substrate los ntawm 2 ntiv mus rau 3 nti, 4 nti los sis 6 nti, 8 nti thiab lwm qhov loj loj loj .
Tab sis txhua yam pom, qhov kev siv nyiaj tam sim no tseem yog lub siab tshaj plaws sapphire; SiC superior kev kawm tab sis kim; Si substrate cov nqi, qhov zoo ntawm qhov zoo thiab kev sib txuas ntawm cov kev sib txuas ntawm cov khoom siv cog lus ua rau lub Si substrate tseem yog qhov kev cia siab tshaj technology hauv ib qho.
GaN substrates tseem yuav tsum txhawm rau txhim kho qhov loj thiab txo tus nqi ntawd cov kev siv zog yav tom ntej hauv cov qib high-end ntsuab laser thiab cov ntawv sau tsis-taws ntsej muag coj los qhia lawv cov txuj ci; hlau cov ntaub ntawv tuaj ntawm kev tuaj yeem rau cov khoom xa tuaj rau kev ywj pheej, nrog kev ua tiav zoo; Lwm cov roj cua Cov ntaub ntawv tau ua tiav zoo. Nyob rau hauv luv luv, Tuam Tshoj tau ua tau zoo nyob rau hauv thaj chaw ntawm cov ntaub ntawv los.
Ntev
Qhov kev txuas ntxiv, uas yog, tus txheej txheem ntawm tau txais cov qauv ntaus ntawv, yog qhov tsim nyog technically feem ntau tsim nyog mus rau kev txiav txim siab ncaj qha nrog quantum efficiency ntawm LED. Tam sim no, feem ntau ntawm cov hluav taws xob siv hluav taws xob feem ntau siv cov qauv zoo heev, cov kev qhia tshwj xeeb feem ntau yuav raug rau cov khoom siv substrate. Lub sapphire substrate feem ntau siv cov duab substrate (PSS) cov cuab yeej siv los txo cov zaj duab xis epitaxial rau qhov tsis ncaj ncees lawm kom txhim kho cov kev yees quantum efficiency, tab sis kuj ua kom cov hauj lwm zoo ntawm lub teeb tawm. Yav tom ntej PSS tshuab tseem yog ib qho tseem ceeb ntawm kev siv tshuab substrate, thiab cov duab loj zuj zus mus rau kev coj ntawm nano-kev loj hlob.
Kev siv GaN homogeneous substrate tuaj yeem ua tsis-ncov qaumteb lossis semi-ncov qaum ntuj epitaxial loj hlob technology, ib feem ntawm kev tshem tawm ntawm cov hluav taws xob polarized hluav taws xob los ntawm tus nqi quantum Stark nyhuv, ntsuab, daj- ntsuab, xim liab thiab txiv kab ntxwv GaN-raws li LED cov ntawv siv nrog lub ntsiab lus tseem ceeb. Tsis tas li ntawd, tam sim no, qhov epitaxy tam sim no yog kev npaj ntawm ib leeg-wavelength wavelength quantum wells, kev siv cov khoom tsim nyog tsim hluav taws xob, yuav npaj tau ntau lub wavelength emission ntawm LED, uas yog, ib leeg-nti dawb LED, uas yog ib qho ntawm cov cia siab kev lawv.
Ntawm lawv, tus sawv cev ntawm InGaN quantum zoo nrog kev sib cais, mus cuag ib qib siab hauv InGaN daj quantum quantum dot thiab xiav teeb quantum ua ke ntawm lub teeb dawb. Tsis tas li ntawd, kev siv ntau yam quantum wells ua kom pom dav spectral lub teeb emission hom, thiaj li ua tiav ib leeg-chip dawb lub teeb tso zis, tab sis cov xim dawb rendering index tseem tseem tsawg. Non-fluorescent dawb-chip dawb LED yog ib txoj hauv kev txaus nyiam ntawm txoj kev loj hlob, yog tias koj tuaj yeem ua tiav cov kev ua haujlwm siab thiab kev ua haujlwm siab dua, nws yuav hloov cov khoom siv hluav taws xob tshuab hluav taws xob.
Nyob hauv tus qauv zoo, qhov qhia txog electron thaiv block los thaiv cov hluav taws xob los mus ua kom cov txiaj ntsig zoo luminous tau ua ib txoj kab qauv ntawm cov qauv hluav taws xob. Tsis tas li ntawd, qhov zoo tshaj plaws ntawm kev muaj peev xwm thiab qhov zoo ntawm cov nqi quantum zoo yuav yog ib qho tseem ceeb sib txuas, yuav ua li cas los kho txoj kev ntxhov siab, ua rau kev txiav cov qhab nia, koj tuaj yeem npaj ntau lub teeb ntawm LED. Nyob rau hauv lub ntim hau txheej, yuav ua li cas los txhim kho hom p-hom ntawm cov khoom zoo, p-hom qhov concentration, conductivity thiab daws qhov siab tam sim no cov nyhuv tseem yog qhov tseem ceeb.
Nti
Nyob rau hauv lub tshuab chip, yuav ua li cas los txhim kho cov teeb meem ntawm lub teeb nrooj thiab tau txais kev kho kom zoo dua qub los ua tus tub ntxhais ntawm tus nti tsim, thiab kev sib luag ntawm txoj kev sib ntsug, qhov ntxhib ntxoo, photonic siv lead ua, tus qauv ntawm cov zaj duab xis, TFFC), tshiab Transparent electrodes thiab lwm yam yees. Ntawm lawv, zaj duab xis ntxeev-nti cov qauv siv laser stripping, nto coarsening thiab lwm yam yees siv, tuaj yeem txhim kho cov txiaj ntsig ntawm qhov kaj.
Chip daim ntawv thov
Dawb LED rau Blu-duab tshav Tsaus Ntsuab Phosphor Tsis tshua muaj Kev Tuab RGB kev hloov ua tau zoo, RGB multi-chip dawb thiab ib leeg-nti phosphor dawb dawb teeb raws li lub ntsiab kev ntawm yav tom ntej dawb LED, low-efficiency ntsuab LED Ua lub ntsiab limiting zauv ntawm RGB zov me me dawb, lub neej yav tom ntej semi-ncov qaumteb qabteb los yog tsis tshua muaj roj ntsuab ntsuab yuav dhau los ua ib txoj kev loj hlob tseem ceeb.
Nyob rau hauv kev daws ntawm dawb LED xim, koj siv tau ntshav los yog UV LED excitation RGB peb-xim phosphor, high-xim dawb LED technology, tab sis yuav tsum txi ib feem ntawm cov lus. Tam sim no, efficiency ntawm violet los yog ultraviolet nti chip tau ua kom zoo, Nichia Tshuaj Company ua 365nm wavelength UV LED sab nraud quantum efficiency ze rau 50%. Lub neej yav tom ntej ntawm UV LED yuav ntau daim ntaub ntawv, thiab tsis muaj lwm qhov UV teeb system cov ntaub ntawv es tsis txhob, kev tsim muaj kev tsim muaj ntau.
Qee lub tebchaws tau tsim ntau cov neeg muaj peev xwm, cov ntaub ntawv muaj peev xwm ua kom tiav UVLED tshawb xyuas. Cov ntaub ntawv muaj nitride ntais teeb ci ntsa iab, ntxiv rau ib cheeb tsam, ob leeg tus nqi lossis kev ua haujlwm tsis yooj yim los sib tw nrog arsenic, thiab yog li kev cia siab tsis meej heev.
Raws li cov saum toj no, nws yuav pom tau tias cov khoom siv hluav taws xob thiab khoom siv hluav taws xob puag ncig hluav taws xob tau zoo heev, tshwj xeeb tshaj yog qhov kev ua tau zoo, lub xiav qhab yog nyob ze rau qhov zoo tshaj plaws ntawm kev lag luam, tus ntiv tes nyob rau hauv qhov kev ntsuas hluav taws xob cov nqi hluav taws xob kuj tseem ceeb txo qis, lub neej yav tom ntej ntawm lub teeb nrig ntawm lub teeb Lub zog ntawm kev loj hlob ntawm lub teeb zoo, uas yuav tsum tau siv cov khoom ntaws tawg ntawm lub teeb ntawm xiav teeb, thaum lub sij hawm ntev wavelength thiab kev taw qhia luv luv wavelength, thiab ntsuab, ntshav thiab UV LED nti yuav ua kom pom tseeb ntawm kev tshawb fawb yav tom ntej.
Cov khoom kub : 90W txoj kev teeb , DLC UL LED Vaj Huam Sib Luag , 72W tsis muaj vaj huam sib luag , 1.5M kab teeb , 100W zog siab , 240W zog siab , Microwave sensor teeb , Tawm pendant siab
