Noocyada LED-ka cadWadooyinka farsamada ee ugu muhiimsan ee LED-ka cad ee nalalka waa: ① Nooca buluugga ah ee LED + fosfooraska; ②Nooca RGB LED; ③ LED-ka Ultraviolet + nooca fosfooraska.

1. Iftiin buluug ah - jajab LED ah + nooca fosfooraska jaalaha ah-cagaaran oo ay ku jiraan noocyada fosfooraska ee midabyo badan leh iyo noocyo kale.

Lakabka fosfooraska jaalaha ah ee cagaarka ah wuxuu nuugaa qayb ka mid ah iftiinka buluugga ah ee ka imanaya jajabka LED si uu u soo saaro iftiin sawireed. Qaybta kale ee iftiinka buluugga ah ee ka imanaya jajabka LED-ka waxaa lagu gudbiyaa lakabka fosfooraska wuxuuna ku milmaa iftiinka jaalaha ah-cagaaran ee uu fosfooraska ka soo saaro meelo kala duwan oo booska ah. Nalalka casaanka, cagaarka iyo buluugga ah ayaa la isku daraa si ay u sameeyaan iftiin cad; Habkan, qiimaha aragtiyeed ee ugu sarreeya ee waxtarka beddelka iftiinka fosfooraska, mid ka mid ah waxtarka kuantumka dibadda, kama badnaan doono 75%; heerka ugu badan ee laga soo saaro iftiinka jajabka wuxuu gaari karaa oo keliya qiyaastii 70%. Sidaa darteed, aragti ahaan, iftiinka cad ee nooca buluugga ah. Waxtarka ugu badan ee iftiinka LED-ka kama badnaan doono 340 Lm/W. Sannadihii la soo dhaafay, CREE wuxuu gaaray 303Lm/W. Haddii natiijooyinka baaritaanku ay sax yihiin, waxaa mudan in la dabaaldego.

2. Isku-darka saddex midab oo aasaasi ah oo casaan, cagaar iyo buluug ahNoocyada RGB LEDku darNoocyada RGBW-LEDiwm.

Saddex diode oo iftiin soo saaraya oo R-LED ah (casaan) + G-LED (cagaar) + B-LED (buluug) ah ayaa la isku daraa, saddexda midab ee aasaasiga ah ee iftiinka casaanka, cagaarka iyo buluugga ah ee la sii daayo ayaa si toos ah loogu qasaa booska si ay u sameeyaan iftiin cad. Si loo soo saaro iftiin cad oo hufan sidan, marka hore, LED-yada midabada kala duwan leh, gaar ahaan LED-yada cagaaran, waa inay noqdaan ilo iftiin oo hufan. Tan waxaa laga arki karaa xaqiiqda ah in iftiinka cagaaran uu yahay qiyaastii 69% "iftiinka cad ee isoenergy". Waqtigan xaadirka ah, waxtarka iftiinka ee LED-yada buluugga ah iyo kuwa cas aad ayuu u sarreeyay, iyadoo waxtarka gudaha ee kuntrum uu ka badan yahay 90% iyo 95% siday u kala horreeyaan, laakiin waxtarka kuntrum gudaha ee LED-yada cagaaran aad ayuu uga hooseeyaa. Dhacdadan hufnaanta iftiinka cagaaran ee LED-yada ku salaysan GaN waxaa loo yaqaan "farqiga iftiinka cagaaran." Sababta ugu weyn ayaa ah in LED-yada cagaaran aysan weli helin agabkooda epitaxial. Alaabada taxanaha ah ee fosfooraska arsenic nitride ee jira waxay leeyihiin hufnaan aad u hooseysa oo ku jirta kala duwanaanshaha jaalaha-cagaaran. Si kastaba ha ahaatee, isticmaalka agabka epitaxial cas ama buluugga ah si loo sameeyo LED-yada cagaaran waxay hoos u dhigi doontaa xaaladaha cufnaanta hadda jirta, sababtoo ah ma jiro luminta beddelka fosfooraska, LED-ka cagaaran wuxuu leeyahay hufnaan iftiin oo ka sarreeya iftiinka cagaaran ee buluugga + fosfooraska. Waxaa la soo sheegay in hufnaantiisu ay gaarto 291Lm/W marka loo eego xaaladda hadda jirta ee 1mA. Si kastaba ha ahaatee, hufnaanta iftiinka ee iftiinka cagaaran ee uu sababo saameynta Droop ayaa si weyn hoos ugu dhacda marka ay jiraan hirarka waaweyn. Marka cufnaanta hadda jirta ay korodho, hufnaanta iftiinka ayaa si dhakhso ah hoos ugu dhacda. Current 350mA, hufnaanta iftiinka waa 108Lm/W. Xaaladaha 1A, hufnaanta iftiinka ayaa hoos u dhacda. ilaa 66Lm/W.

Fosfiidadka Kooxda III, sii deynta iftiinka xariiqda cagaaran waxay noqotay caqabad aasaasi ah oo ku wajahan nidaamyada walxaha. Beddelka qaab-dhismeedka AlInGaP si uu u soo saaro cagaar halkii uu ka ahaan lahaa casaan, oranji ama jaalle waxay keenaysaa xayiraad ku filan oo sideyaal ah sababtoo ah farqiga tamarta ee hooseeya ee nidaamka walxaha, kaas oo ka hortagaya isku-darka shucaaca ee hufan.

Taas bedelkeeda, way ku adag tahay III-nitrides inay gaaraan hufnaan sare, laakiin dhibaaduhu ma aha kuwo aan laga gudbi karin. Isticmaalka nidaamkan, fidinta iftiinka ilaa xarigga iftiinka cagaaran, laba arrimood oo sababi doona hoos u dhac ku yimaada hufnaanta waa: hoos u dhaca hufnaanta quantum ee dibadda iyo hufnaanta korontada. Hoos u dhaca hufnaanta quantum ee dibadda waxay ka timaaddaa xaqiiqda ah in kasta oo farqiga u dhexeeya xargaha cagaaran uu hooseeyo, LED-yada cagaaran waxay isticmaalaan danabka hore ee sare ee GaN, taasoo keenta in heerka beddelka awoodda uu hoos u dhaco. Khasaaraha labaad ayaa ah in LED-ka cagaaran uu hoos u dhaco marka cufnaanta hadda la duray ay korodho oo ay ku xayiranto saamaynta hoos u dhaca. Saamaynta Droop sidoo kale waxay ka dhacdaa LED-yada buluugga ah, laakiin saameynteedu way ka weyn tahay LED-yada cagaaran, taasoo keentay hufnaanta hadda ee shaqada caadiga ah oo hooseysa. Si kastaba ha ahaatee, waxaa jira mala-awaal badan oo ku saabsan sababaha saameynta hoos u dhaca, ma aha oo kaliya dib-u-soo-celinta Auger - waxaa ka mid ah kala-goysyada, qulqulka side-ka ama daadinta elektarooniga. Tan dambe waxaa xoojiya garoon koronto oo gudaha ah oo danab sare leh.

Sidaa darteed, habka loo horumariyo hufnaanta iftiinka ee LED-yada cagaaran: dhinaca kale, baro sida loo yareeyo saamaynta Droop iyadoo la raacayo xaaladaha walxaha epitaxial ee jira si loo hagaajiyo hufnaanta iftiinka; dhinaca kale, isticmaal beddelka photoluminescence ee LED-yada buluugga ah iyo fosfooraska cagaaran si aad u soo saarto iftiin cagaaran. Habkani wuxuu heli karaa iftiin cagaaran oo hufan, kaas oo aragti ahaan gaari kara hufnaan iftiin oo ka sarreeya iftiinka cad ee hadda jira. Waa iftiin cagaaran oo aan iskiis u dhicin, hoos u dhaca daahirnimada midabka ee ay keento ballaarintiisa muuqaalkuna waa mid aan fiicnayn bandhigyada, laakiin kuma habboona dadka caadiga ah. Ma jirto dhibaato iftiiminta. Waxtarka iftiinka cagaaran ee laga helo habkan wuxuu leeyahay suurtogalnimada inuu ka weynaado 340 Lm/W, laakiin weli ma dhaafi doono 340 Lm/W ka dib marka la isku daro iftiinka cad. Marka saddexaad, sii wad cilmi-baarista oo hel agabkaaga epitaxial. Kaliya sidan, waxaa jira rajo yar. Marka la helo iftiin cagaaran oo ka sarreeya 340 Lm/w, iftiinka cad oo ay isku daraan saddexda LED ee midabka koowaad ee casaanka, cagaarka iyo buluugga ah waxay ka sarreyn karaan xadka hufnaanta iftiinka ee 340 Lm/w ee LED-yada iftiinka cad ee buluugga ah.

3. Nalalka Ultraviolet-kajajab + saddex fosfooraska midabka aasaasiga ah ayaa iftiimiya.

Cilladda ugu weyn ee labada nooc ee LED-yada cad ee kor ku xusan waa qaybinta aan sinnayn ee booska ee iftiinka iyo midabka. Iftiinka Ultraviolet-ka indhaha aadanaha ma arki karaan. Sidaa darteed, ka dib marka iftiinka ultraviolet-ku ka baxo jajabka, waxaa nuuga saddexda fosfooraska midabka aasaasiga ah ee lakabka baakadaha, waxaana loo beddelaa iftiin cad iyadoo la adeegsanayo iftiinka fosfooraska, ka dibna waxaa loo sii daayaa hawada sare. Tani waa faa'iidadiisa ugu weyn, sida laambadaha iftiinka ee dhaqameed, ma laha sinnaan la'aanta midabka booska. Si kastaba ha ahaatee, waxtarka iftiinka aragtiyeed ee iftiinka ultraviolet-ka iftiinka cad ma noqon karo mid ka sarreeya qiimaha aragtiyeed ee iftiinka buluugga ah ee jajabka cad, iska daa qiimaha aragtiyeed ee iftiinka cad ee RGB. Si kastaba ha ahaatee, iyada oo loo marayo horumarinta fosfooraska midabka saddex-asalka ah ee waxtarka sare leh ee ku habboon kicinta ultraviolet-ka ayaan ku heli karnaa LED-yada cad ee ultraviolet-ka ee u dhow ama xitaa ka waxtar badan labada LED-yada cad ee kor ku xusan marxaladdan. Inta ay u dhowdahay LED-yada ultraviolet-ka buluugga ah, ayay u badan tahay inay sii badanayaan. Inta ay ka weyn tahay, LED-yada cad ee dhexdhexaadka ah iyo kuwa UV-ga ee hirarka gaaban ma suurtogal aha.