1. Itshiphu ye-Blue-LED + uhlobo lwephosphor olutyheli-luhlaza olubandakanya uhlobo lwe-phosphor olunemibala emininzi

 Umaleko wephosphor omthubi-luhlaza ufunxa inxalenye yeisibane esiluhlazaye-chip ye-LED ukuvelisa i-photoluminescence, kunye nenye inxalenye yokukhanya okuluhlaza okwesibhakabhaka ukusuka kwi-chip ye-LED idluliselwa ngaphandle kwe-phosphor layer kwaye idibanisa nokukhanya okuluhlaza okutyheli okukhutshwa yi-phosphor kwiindawo ezahlukeneyo kwindawo, kunye nobomvu, ukukhanya okuluhlaza kunye noluhlaza okwesibhakabhaka kuxutywe ukwenza ukukhanya okumhlophe;Ngaloo ndlela, ixabiso eliphezulu le-theoretical ye-phosphor photoluminescence yokuguqulwa kwe-phosphor, enye ye-quantum esebenzayo yangaphandle, ayiyi kudlula i-75%;kunye nenqanaba eliphezulu lokukhutshwa kokukhanya ukusuka kwi-chip lingafikelela kuphela malunga ne-70%, ngoko ke ithiyori, ukukhanya okumhlophe okwesibhakabhaka Ukukhanya okuphezulu kwe-LED okukhanyayo akuyi kudlula i-340 Lm / W, kwaye i-CREE ifikelele kwi-303Lm / W kwiminyaka embalwa edlulileyo.Ukuba iziphumo zovavanyo zichanekile, kuyafaneleka ukubhiyozela.

2. Ukudibanisa okubomvu, okuluhlaza kunye nohlaza okwesibhakabhakaI-RGB ye-LEDuhlobo lubandakanya uhlobo lwe-RGBW-LED, njl.

 Iidiode ezintathu ezikhupha ukukhanya kwe-R-LED (bomvu) + G-LED (luhlaza) + B- LED (bhlowu) zidityaniswe kunye, kwaye imibala yokuqala emithathu ebomvu, eluhlaza kunye nebhlowu ixubene ngqo esithubeni ukuze ibe mhlophe. ukukhanya.Ukuze kuveliswe ukukhanya okumhlophe okuphezulu ngale ndlela, okokuqala, ii-LED zemibala eyahlukeneyo, ngakumbi ii-LED eziluhlaza, kufuneka zibe yimithombo yokukhanya ephezulu, enokubonwa "kukukhanya okumhlophe okulinganayo" apho ukukhanya okuluhlaza kubalwa khona. malunga nama-69%.Okwangoku, ukukhanya okukhanyayo kwee-LED eziluhlaza kunye nobomvu kuphezulu kakhulu, kunye nokusebenza kwe-quantum yangaphakathi kudlula i-90% kunye ne-95%, ngokulandelanayo, kodwa ubungakanani bangaphakathi be-LED eluhlaza busemva kakhulu.Esi siganeko sokukhanya okuphantsi kokukhanya okuluhlaza kwee-LED ezisekwe kwiGaN kubizwa ngokuba “sisikhewu sokukhanya okuluhlaza.”Isizathu esona sizathu kukuba ii-LED eziluhlaza azizange zifumane izinto zazo ze-epitaxial.Izinto ezikhoyo zothotho lwe-phosphorous arsenic nitride zinokusebenza okuphantsi kwispectrum etyheli-luhlaza.Izinto ezibomvu okanye eziluhlaza ze-epitaxial zisetyenziselwa ukwenza ii-LED eziluhlaza.Ngaphantsi kwemeko yoxinano oluphantsi lwangoku, ngenxa yokuba akukho lahleko yokuguqulwa kwephosphor, i-LED eluhlaza inokukhanya okuphezulu okuphezulu kunokukhanya okuluhlaza + kwephosphor.Kuxelwe ukuba ukusebenza kwayo okukhanyayo kufikelela kwi-291Lm / W phantsi kwemeko ye-1mA yangoku.Nangona kunjalo, ukuhla kokukhanya kokukhanya kokukhanya okuluhlaza okubangelwa yi-Droop effect phantsi komsinga omkhulu kubalulekile.Xa ukuxinana kwangoku kwanda, ukukhanya kokukhanya kwehla ngokukhawuleza.Kwixesha langoku le-350mA, ukukhanya okusebenzayo yi-108Lm/W.Ngaphantsi kwemeko ye-1A, ukukhanya kokukhanya kuyancipha.Ukuya kwi-66Lm/W.

Kwi-III phosphines, ukukhutshwa kokukhanya kwibhanti eluhlaza kuye kwaba ngumqobo osisiseko kwinkqubo yezinto.Ukutshintsha ukubunjwa kwe-AlInGaP ukuyenza ikhuphe ukukhanya okuluhlaza endaweni yobomvu, i-orenji okanye i-yellow-ebangela ukungonelanga komthwali we-carrier ngenxa ye-gap ye-energy ephantsi yenkqubo yezinto eziphathekayo, engabandakanyi ukuhlanganiswa okusebenzayo kwe-radiation.

Ngoko ke, indlela yokuphucula ukukhanya kwe-LED eluhlaza: kwelinye icala, funda indlela yokunciphisa i-Droop effect phantsi kweemeko zezinto ezikhoyo ze-epitaxial zokuphucula ukukhanya;okwesibini, sebenzisa ukuguqulwa kwe-photoluminescence yee-LED eziluhlaza kunye ne-phosphors eluhlaza ukukhupha ukukhanya okuluhlaza.Le ndlela inokufumana ukukhanya okuphezulu okukhanyayo okukhanyayo, okunokuthi kufezekiswe ukusebenza kakuhle okukhanyayo kunokukhanya okumhlophe kwangoku.Yeyokukhanya okuluhlaza okungazenzekeliyo.Akukho ngxaki ngokukhanyisa.Impembelelo yokukhanya okuluhlaza efunyenwe yile ndlela ingaba mkhulu kune-340 Lm / W, kodwa ayiyi kudlula i-340 Lm / W emva kokudibanisa ukukhanya okumhlophe;okwesithathu, qhubeka uphando kwaye ufumane izinto zakho ze-epitaxial, kuphela Ngale ndlela, kukho ithemba lokuba emva kokufumana ukukhanya okuluhlaza okungaphezulu kakhulu kwe-340 Lm / w, ukukhanya okumhlophe kudibaniswe nemibala emithathu ephambili ebomvu, Ii-LED eziluhlaza kunye nebhlowu zinokuba phezulu kunomda wokukhanya oqaqambileyo wee-LED eziluhlaza okwesibhakabhaka ze-340 Lm/W.

3. I-Ultraviolet LEDchip + ezintathu umbala ophambili phosphors ukhupha ukukhanya 

Esona siphene siphambili kwezi ntlobo zimbini zingasentla zee-LED ezimhlophe kukwabiwa kwendawo engalinganiyo yokukhanya kunye nechromaticity.Ukukhanya kwe-ultraviolet akubonakali ngeliso lomntu.Ke ngoko, emva kokuba ukukhanya kwe-ultraviolet kuphuma kwi-chip, ifunxwa yimibala emithathu ephambili ye-phosphors ye-encapsulation layer, iguqulwe ibe kukukhanya okumhlophe yi-photoluminescence ye-phosphor, ize ikhutshwe kwindawo.Le yeyona nzuzo yayo inkulu, njengezibane zemveli ze-fluorescent, ayinakho ukungalingani kombala wendawo.Nangona kunjalo, ukusebenza kakuhle kwethiyori ye-ultraviolet chip-uhlobo olumhlophe lokukhanya kwe-LED ayinakuba phezulu kunexabiso lethiyori yokukhanya okumhlophe kohlobo lwe-chip, singasathethi ke ngexabiso lethiyori lokukhanya okumhlophe kohlobo lwe-RGB.Nangona kunjalo, kuphela ngokuphuhliswa komgangatho ophezulu we-phosphors ezintathu eziziiprayimari ezifanelekileyo kwi-excitation ye-ultraviolet ekunokuthi kwenzeke ukufumana ii-LED ezimhlophe ze-ultraviolet ezikufutshane okanye ezingaphezulu kunezi zikhanyisa ezimbini ezimhlophe ze-LED kweli nqanaba.Ukusondela kwi-blue ultraviolet ukukhanya kwe-LED, okunokwenzeka Ubukhulu bokukhanya okumhlophe kwe-LED yamaza aphakathi kunye nohlobo olufutshane lwe-ultraviolet alunakwenzeka.