1. Chip ea Blue-LED + mofuta oa phosphor o mosehla o motala o kenyelletsang mofuta o tsoang ho mefuta e mengata ea phosphor

 Lera la phosphor le botala bo bosehla le monya karolo ealebone le leputsoaea chip ea LED ho hlahisa photoluminescence, 'me karolo e' ngoe ea leseli le leputsoa le tsoang ho chip ea LED e fetisoa ka ntle ho phosphor le ho kopana le leseli le botala bo bosehla bo hlahisoang ke phosphor libakeng tse sa tšoaneng sebakeng, le bofubelu, khanya e tala le e putsoa e tsoakane ho etsa leseli le lesoeu;Ka tsela ena, boleng bo phahameng ka ho fetisisa ba theory ea phosphor photoluminescence phetolo ea katleho, e leng e 'ngoe ea ts'ebetso ea ka ntle ea quantum, e ke ke ea feta 75%;'me tekanyo e phahameng ka ho fetisisa ea ho ntšoa ha leseli ho tloha ho chip e ka fihla hoo e ka bang 70% feela, kahoo ka khopolo, leseli le leputsoa le lesoeu Molemo o phahameng ka ho fetisisa oa khanya ea LED o ke ke oa feta 340 Lm / W, 'me CREE e fihlile 303Lm / W lilemong tse' maloa tse fetileng.Haeba liphetho tsa liteko li nepahetse, ho loketse ho keteka.

2. Motsoako o mofubelu, o motala le o moputsoaRGB LEDmofuta o kenyelletsa mofuta oa RGBW-LED, joalo-joalo.

 Li-diode tse tharo tse hlahisang khanya ea R-LED (khubelu) + G-LED (tala) + B- LED (buluu) li kopantsoe hammoho, 'me mebala e meraro ea mantlha ea bofubelu, botala le boputsoa bo tsoakane ka kotloloho sebakeng ho etsa bosoeu. kganya.E le ho hlahisa khanya e khanyang e khanyang ka tsela ena, pele, li-LED tsa mebala e sa tšoaneng, haholo-holo li-LED tse tala, li tlameha ho ba mehloli e phahameng ea leseli, e ka bonoang ho tloha "leseli le lekanang le lesoeu" leo leseli le letala le ikarabellang ho lona. hoo e ka bang 69%.Hona joale, bokhoni bo khanyang ba li-LED tse putsoa le tse khubelu bo phahame haholo, ka matla a ka hare a quantum a fetang 90% le 95%, ka ho latellana, empa katleho ea ka hare ea li-LED tse tala e saletse morao haholo.Ketsahalo ena ea khanya e tlase ea khanya e tlase ea li-LED tse thehiloeng ho GaN e bitsoa "lekhalo la khanya e tala."Lebaka le ka sehloohong ke hore li-LED tse tala ha lia ka tsa fumana lisebelisoa tsa tsona tsa epitaxial.Lisebelisoa tse seng li ntse li le teng tsa phosphorus arsenic nitride li na le ts'ebetso e tlase maemong a botala bo bosehla.Lisebelisoa tsa epitaxial tse khubelu kapa tse putsoa li sebelisoa ho etsa li-LED tse tala.Tlas'a boemo ba ho fokotseha ha hona joale, hobane ha ho na tahlehelo ea phetoho ea phosphor, LED e tala e na le matla a phahameng a khanyang ho feta mofuta o moputsoa + oa phosphor o motala.Ho tlalehoa hore katleho ea eona e khanyang e fihla ho 291Lm / W tlas'a boemo ba 1mA hona joale.Leha ho le joalo, ho theoha ha katleho ea khanya ea khanya e tala e bakoang ke phello ea Droop tlas'a motlakase o moholo ke ea bohlokoa.Ha boima ba hona joale bo ntse bo eketseha, matla a khanya a theoha ka potlako.Hajoale 350mA, matla a khanya ke 108Lm/W.Tlas'a boemo ba 1A, katleho ea khanya e theoha.Ho isa ho 66Lm/W.

Bakeng sa li-phosphine tsa III, ho ntšoa ha leseli ho sehlopha se setala ho fetohile tšitiso ea mantlha tsamaisong ea lintho tse bonahalang.Ho fetola sebopeho sa AlInGaP ho e etsa hore e hlahise leseli le letala ho e-na le bofubelu, lamunu kapa mosehla-ho baka moeli o sa lekaneng oa mokhanni o bakoa ke lekhalo le batlang le le tlaase la matla a tsamaiso ea thepa, e sa kenyelletseng ho kopanya mahlaseli a sebetsang hantle.

Ka hona, mokhoa oa ho ntlafatsa katleho ea khanya ea li-LED tse tala: ka lehlakoreng le leng, ithute mokhoa oa ho fokotsa phello ea Droop tlas'a maemo a lisebelisoa tsa epitaxial tse teng ho ntlafatsa bokhoni ba leseli;ea bobeli, sebelisa phetoho ea photoluminescence ea li-LED tse putsoa le li-phosphors tse tala ho ntša khanya e tala.Mokhoa ona o ka fumana leseli le letala le khanyang haholo, le ka fihlelang katleho e phahameng ea khanya ho feta lebone la hajoale le lesoeu.Ke ea khanya e tala e sa itlelang feela.Ha ho na bothata ka mabone.Phello ea leseli le tala e fumanoang ka mokhoa ona e ka ba kholo ho feta 340 Lm / W, empa e ntse e ke ke ea feta 340 Lm / W ka mor'a ho kopanya leseli le lesoeu;ea boraro, tsoela pele ho etsa lipatlisiso 'me u fumane boitsebiso ba hau ba epitaxial, feela Ka tsela ena, ho na le leseli la tšepo ea hore ka mor'a ho fumana leseli le letala le phahameng haholo ho feta 340 Lm / w, leseli le lesoeu le kopantsoeng ke mebala e meraro e ka sehloohong e khubelu, li-LED tse tala le tse putsoa li kanna tsa ba holimo ho feta moeli o khanyang oa li-LED tse bosoeu tsa 340 Lm/W.

3. Leseli la ultravioletchip + mebala e meraro ea mantlha ea phosphors e ntša leseli 

Bothata bo ka sehloohong ba mefuta e 'meli e ka holimo ea li-LED tse tšoeu ke kabo e sa lekaneng ea sebaka sa khanya le chromaticity.Leseli la ultraviolet ha le bonahale ka leihlo la motho.Ka hona, ka mor'a hore lebone la ultraviolet le tsoe ka har'a chip, le monngoa ke mebala e meraro ea phosphors ea "encapsulation layer", e fetoloang leseli le lesoeu ke photoluminescence ea phosphor, ebe e kenngoa sebakeng.Ena ke molemo oa eona o moholo, joalo ka mabone a setso a fluorescent, ha e na ho se lekane ha 'mala oa sebaka.Leha ho le joalo, bokhoni ba khopolo-taba bo khanyang ba lebone le lesoeu la mofuta oa ultraviolet chip e ke ke ea e-ba holimo ho feta boleng ba khopolo-taba ea lebone le lesoeu la mofuta oa blue chip, re se re sa bue ka boleng ba khopolo-taba ba lebone le lesoeu la mofuta oa RGB.Leha ho le joalo, ke feela ka nts'etsopele ea li-phosphor tsa mantlha tse tharo tse loketseng ho hlasimolla leseli la ultraviolet moo ho ka khonehang ho fumana li-LED tsa lebone le lesoeu tsa ultraviolet tse haufi kapa tse phahameng ho feta tse kaholimo tse peli tse tšoeu tsa LED mothating ona.Haufi le lebone le leputsoa la ultraviolet la LED, monyetla oa hore leseli le lesoeu le khanyang la LED la maqhubu a mahareng le mofuta o mokhuts'oane oa ultraviolet ha le khonehe.