1. Chip yebhuruu-LED + yero-girini phosphor mhando inosanganisira mhando yephosphor ine mavara akawanda

 Fosforasi yero-girini inonwisa chikamu chechiedza chebhuruuChip ye LED kuti ibudise photoluminescence, uye chimwe chikamu chechiedza chebhuruu kubva ku LED chip chinotumirwa kubva mu phosphor layer uye chinobatana nechiedza cheyero-girini chinoburitswa ne phosphor panzvimbo dzakasiyana munzvimbo, uye chiedza chitsvuku, chegirini nebhuruu chinosanganiswa kuti chigadzire chiedza chichena; Nenzira iyi, kukosha kwepamusoro-soro kwe phosphor photoluminescence conversion efficiency, inova imwe ye external quantum efficiency, haizopfuuri 75%; uye mwero wepamusoro wekuburitsa chiedza kubva ku chip unogona kusvika pa70% chete, saka mudzidziso, chiedza chebhuruu chena Kushanda kwepamusoro kwe LED luminous efficiency hakuzopfuuri 340 Lm/W, uye CREE yakasvika 303Lm/W mumakore mashoma apfuura. Kana mhinduro dzebvunzo dzakarurama, zvakakodzera kupembererwa.

2. Musanganiswa wetsvuku, girini nebhuruuLED yeRGBmhando inosanganisira RGBW-LED mhando, nezvimwewo.

 Ma diode matatu anoburitsa chiedza eR-LED (tsvuku) + G-LED (girini) + B- LED (bhuruu) anobatanidzwa pamwe chete, uye mavara matatu makuru etsvuku, girini nebhuruu anosanganiswa zvakananga muchadenga kuti agadzire chiedza chichena. Kuti zvibudise chiedza chichena chinoshanda zvakanyanya nenzira iyi, chekutanga, ma LED ane mavara akasiyana-siyana, kunyanya ma LED egirini, anofanira kunge ari matsime echiedza anoshanda zvakanyanya, izvo zvinogona kuonekwa kubva ku "chiedza chena chakaenzana" umo chiedza chegirini chinoita 69%. Parizvino, kushanda zvakanaka kwe LED dzebhuruu netsvuku kwave kwakanyanya, nekushanda zvakanaka kwemukati kwe quantum kunodarika 90% ne95%, zvichiteerana, asi kushanda zvakanaka kwemukati kwe LED dzegirini kuri kure. Chiitiko ichi chekushanda zvakanaka kwechiedza chegirini cheGaN-based LEDs chinonzi "green light gap." Chikonzero chikuru ndechekuti ma LED egirini haana kuwana zvinhu zvavo zve epitaxial. Zvinhu zviripo zve phosphorous arsenic nitride series zvine kushanda zvishoma muyero-girini spectrum. Zvinhu zvitsvuku kana zvebhuruu zve epitaxial zvinoshandiswa kugadzira ma LED egirini. Kana magetsi ari pasi pehuwandu hwemagetsi, nekuti hapana kurasikirwa kwekushandurwa kwephosphor, LED yegirini ine simba guru rechiedza kupfuura chiedza chegirini chebhuruu + phosphor. Zvinonzi simba rayo rechiedza rinosvika 291Lm/W kana magetsi ari 1mA. Zvisinei, kudzikira kwesimba rechiedza chegirini kunokonzerwa neDroop effect kana magetsi ari pasi pemagetsi makuru kwakakosha. Kana simba remagetsi rikawedzera, simba rechiedza rinodzikira nekukurumidza. Pamagetsi e350mA, simba rechiedza rinosvika 108Lm/W. Kana magetsi ari pasi pe1A, simba rechiedza rinodzikira. Kusvika 66Lm/W.

Kune ma phosphine echitatu, kubuda kwechiedza mubhandi regirini kwave chipingamupinyi chikuru kuhurongwa hwezvinhu. Kuchinja chimiro cheAlInGaP kuti chibudise chiedza chegirini panzvimbo petsvuku, orenji kana yero—zvichikonzera kusakwana kwemutakuri kunokonzerwa nekusakwana kwesimba remuchina wezvinhu, izvo zvinobvisa kusanganiswa kwemwaranzi kunoshanda.

Saka, nzira yekuvandudza kushanda zvakanaka kwechiedza chema LED egirini: kune rumwe rutivi, dzidza maitiro ekuderedza Droop effect pasi pemamiriro ezvinhu e epitaxial aripo kuti uvandudze kushanda zvakanaka kwechiedza; pane rwechipiri, shandisa photoluminescence conversion yebhuruu LEDs negreen phosphors kuti uburitse chiedza chegirini. Nzira iyi inogona kuwana chiedza chegirini chakanyanya kushanda zvakanaka, icho chinogona kuita kuti chiedza chiwedzere kushanda zvakanaka kupfuura chiedza chena chiripo. Ndechechiedza chegirini chisiri chega. Hapana dambudziko nechiedza. Mhedzisiro yechiedza chegirini inowanikwa nenzira iyi inogona kunge yakakura kupfuura 340 Lm/W, asi haizopfuuri 340 Lm/W mushure mekubatanidza chiedza chena; chechitatu, ramba uchitsvaga uye uwane epitaxial yako, chete Nenzira iyi, pane tariro yekuti mushure mekuwana chiedza chegirini chakakwirira kupfuura 340 Lm/w, chiedza chena chakasanganiswa nemavara matatu makuru e LED dzvuku, girini nebhuruu chingave chakakwirira kupfuura muganho wekushanda zvakanaka kwebhuruu chip chena LEDs ye340 Lm/W.

3. LED yeUltravioletchip + phosphors nhatu dzemavara makuru dzinoburitsa chiedza 

Chikanganiso chikuru chemarudzi maviri ari pamusoro apa e LED chena ndechekusaenzana kwenzvimbo yekupenya uye chromaticity. Mwenje we ultraviolet hauonekwe nemaziso evanhu. Saka, mushure mekunge mwenje we ultraviolet wabuda muchip, unotorwa ne phosphors nhatu dzemavara ekutanga dze encapsulation layer, wozoshandurwa kuita chiedza chichena ne photoluminescence ye phosphor, wozoburitswa munzvimbo. Iyi ndiyo mukana wayo mukuru, kungofanana nemwenje ye fluorescent yechinyakare, haina spatial color unequality. Zvisinei, theory luminous efficiency ye ultraviolet chip-type white light LED haigone kuve yakakwira kupfuura theoretical value ye blue chip-type white light, tisingatauri the theoretical value ye RGB-type white light. Zvisinei, kuburikidza nekugadzirwa kwe high-efficiency three-primary phosphors dzakakodzera ultraviolet light excitation chete ndipo panogona kuwanikwa ultraviolet white light LED dziri pedyo kana kuti dzakatopfuura ma LED maviri machena ari pamusoro apa padanho rino. Kana ultraviolet light LED iri pedyo ne blue ultraviolet light, mukana wekuti white light LED yakakura ye medium wave ne short wave ultraviolet type haigoneke.