1. chip-buluug-LED nooca fosfoorka jaalaha-cagaaran oo ay ku jiraan nooca phosphor-ka-midab badan

 Lakabka fosfor ee jaalaha-cagaaran wuxuu nuugaa qayb ka mid ahiftiin buluug ahee chip LED si ay u soo saaraan photoluminescence, iyo qaybta kale ee iftiinka buluuga ah ee chip LED waxaa lagu kala qaadaa ka soo lakabka fosfooraska oo ku milmay iftiinka jaalaha-cagaaran ee fosfooraska meelo kala duwan oo meel bannaan, iyo casaan, cagaar iyo buluug ayaa isku dhafan si ay u sameeyaan iftiin cad;Sidan, qiimaha aragtida ugu sarreeya ee waxtarka beddelidda phosphor photoluminescence, kaas oo ah mid ka mid ah waxtarka tirada dibadda, kama badan doono 75%;iyo heerka iftiinka ugu sarreeya ee ka soo baxa chip-ku wuxuu gaari karaa oo kaliya qiyaastii 70%, markaa aragtida, iftiinka buluuga ah ee buluuga ah ee iftiinka iftiinka LED-ka ugu sarreeya kama badnaan doono 340 Lm / W, iyo CREE waxay gaartay 303Lm / W dhowrkii sano ee la soo dhaafay.Haddii natiijooyinka imtixaanku ay sax yihiin, waxaa habboon in la dabaaldego.

2. Isku darka casaan, cagaar iyo buluugRGB LEDnooca waxaa ku jira nooca RGBW-LED, iwm.

 Saddexda diode ee iftiimiya iftiinka ee R-LED (cas) + G-LED (cagaaran) + B- LED (buluug) ayaa la isku daray, saddexda midab ee aasaasiga ah ee casaanka, cagaarka iyo buluugga ayaa si toos ah loogu qasi karaa meel bannaan si ay u sameeyaan caddaan. iftiin.Si loo soo saaro iftiin cad oo tayo sare leh oo sidan ah, marka hore, LEDs midabyo kala duwan, gaar ahaan LEDs cagaaran, waa inay ahaadaan ilo iftiin tayo sare leh, taas oo laga arki karo "iftiin cad oo siman" kaas oo iftiinka cagaaran uu xisaabiyo. qiyaastii 69%.Waqtigan xaadirka ah, waxtarka iftiinka ee buluuga iyo casaanka LED-yada ayaa ahaa mid aad u sarreeya, oo leh waxtarka tirada gudaha ee ka sarreeya 90% iyo 95%, siday u kala horreeyaan, laakiin waxtarka gudaha gudaha ee LED-yada cagaaran ayaa aad uga dambeeya.Dhacdadan waxtarka iftiinka cagaaran ee hooseeya ee GaN-ku-saleysan LEDs waxaa loo yaqaan "farqiga iftiinka cagaaran."Sababta ugu weyn ayaa ah in LED-yada cagaaran aysan helin qalabkooda epitaxial.Foosfooraska jira ee arsenic nitride walxaha taxanaha ah waxay leeyihiin waxtar hoose ee spectrum jaalaha-cagaaran.Qalabka epitaxial ee casaanka ama buluuga ah ayaa loo isticmaalaa in lagu sameeyo LEDs cagaaran.Marka la eego xaaladda cufnaanta hoose ee hadda jirta, sababtoo ah ma jiro lumin beddelka fosfoor, LED-ga cagaaran wuxuu leeyahay waxtarka iftiinka sare ee buluugga + nooca fosfooraska iftiinka cagaaran.Waxaa la soo sheegay in waxtarkeeda iftiinka ahi uu gaaro 291Lm/W iyadoo ay ku xiran tahay xaaladda 1mA hadda.Si kastaba ha ahaatee, hoos u dhaca waxtarka iftiinka iftiinka cagaaran ee uu keeno saameynta Droop ee hoos yimaada hadda weyn ayaa muhiim ah.Marka cufnaanta hadda korodho, waxtarka iftiinka ayaa si dhakhso ah hoos ugu dhacaya.Waqtiga xaadirka ah ee 350mA, waxtarka iftiinka waa 108Lm/W.Marka la eego xaaladda 1A, waxtarka iftiinka ayaa hoos u dhacaya.Ilaa 66Lm/W.

Foosfiyinka III, iftiinka iftiinka ee kooxda cagaaran wuxuu noqday caqabad aasaasi ah oo ku ah nidaamka maaddooyinka.Beddelida ka kooban AlInGaP si ay uga dhigto inay sii dayso iftiinka cagaarka halkii ay ka ahaan lahayd casaan, oranji ama jaalle-sababta xaddidaadda sideyaasha oo aan ku filnayn waxaa sabab u ah faraqa tamarta yar ee nidaamka walxaha, kaas oo ka saaraya dib-u-habaynta shucaaca waxtarka leh.

Sidaa darteed, habka loo hagaajiyo waxtarka iftiinka LED-yada cagaaran: dhinaca kale, baro sida loo yareeyo saameynta Droop ee shuruudaha qalabka epitaxial ee jira si loo hagaajiyo waxtarka iftiinka;Marka labaad, isticmaal beddelka sawir-qaadista ee LED-yada buluuga ah iyo fosfoorrada cagaaran si aad u sii dayso iftiinka cagaaran.Habkani wuxuu heli karaa hufnaan sare oo iftiin cagaaran ah, kaas oo aragti ahaan gaari kara waxtarka iftiinka sare marka loo eego iftiinka cad ee hadda jira.Waxay iska leedahay iftiinka cagaarka ah ee aan iskeed ahayn.Wax dhib ah kuma laha nalka.Saamaynta iftiinka cagaarka ah ee lagu helo habkan ayaa laga yaabaa inuu ka weyn yahay 340 Lm / W, laakiin weli kama badnaan doono 340 Lm / W ka dib marka la isku daro iftiinka cad;Seddexaad, sii wad cilmi baarista oo raadso walxahaaga epitaxial, kaliya habkan, waxaa jira rajo ah in ka dib markii la helo iftiin cagaaran oo aad uga sarreeya 340 Lm / w, iftiinka cad ee isku dhafan ee saddexda midab ee casaanka ah. Nalalka cagaaran iyo buluuga ah ayaa laga yaabaa inay ka sarreeyaan xadka waxtarka iftiinka ee nalalka buluuga ah ee buluuga ah ee 340 Lm / W.

3. Ultraviolet LEDchip + saddex fosfooraska midabka aasaasiga ah ayaa iftiimiya iftiinka 

Ciladda ugu weyn ee ka jirta labada nooc ee kor ku xusan ee LED-yada cad waa qaybinta aan sinnayn ee iftiinka iyo chromaticity.Iftiinka ultraviolet ma aha mid laga dareemi karo isha bini'aadamka.Sidaa darteed, ka dib marka iftiinka ultraviolet ka soo baxo chips, waxaa nuugaya saddexda fosfooraska midabka aasaasiga ah ee lakabka daboolka, oo u beddela iftiin cad by photoluminescence ee fosfoorka, ka dibna ku sii daaya meel bannaan.Tani waa faa'iidada ugu weyn, sida nalalka dhaadheer ee dhaqameed, ma laha sinnaansho midab meel bannaan.Si kastaba ha ahaatee, hufnaanta aragtida aragtida ultraviolet chip-nooca iftiinka cad ee nalka cad kama sarreyn karo qiimaha aragtida buluugga nooca-chip-ka nalka cad, iska daa qiimaha aragtida ee nooca RGB-ga iftiinka cad.Si kastaba ha ahaatee, kaliya iyada oo loo marayo horumarinta waxtarka sare leh ee saddex-jir ah ee fosfooraska aasaasiga ah ee ku habboon kicinta iftiinka ultraviolet waxay suurtagal noqon kartaa in la helo nalalka cadcad ee ultraviolet ee u dhow ama xitaa ka sarreeya labada kor ee nalka cad ee cad ee heerkan.Sida ugu dhow ee iftiinka ultraviolet ee buluuga ah, suurtogalnimada weynaanta iftiinka cad ee mawjada dhexdhexaadka ah iyo nooca gaaban ee ultraviolet waa wax aan macquul ahayn.