Nā ʻano LED keʻokeʻo: ʻO nā ala ʻenehana nui o nā LED keʻokeʻo no ka hoʻomālamalama ʻana: ① Blue LED + phosphor type;②ʻAno LED RGB;③ Ultraviolet LED + ʻano phosphor.

1. ʻO ke kukui ʻulaʻula - LED chip + ʻano phosphor melemele-'ōmaʻomaʻo me nā derivatives phosphor multi-color a me nā ʻano ʻē aʻe.

Hoʻopili ka papa phosphor melemele-'ōmaʻomaʻo i kahi hapa o ke kukui polū mai ka chip LED e hana i ka photoluminescence.Hoʻouna ʻia ka ʻāpana ʻē aʻe o ke kukui polū mai ka chip LED ma o ka phosphor layer a hui pū me ke kukui melemele-'ōmaʻomaʻo i hoʻokuʻu ʻia e ka phosphor ma nā wahi like ʻole o ka lewa.Hoʻohui ʻia nā kukui ʻulaʻula, ʻōmaʻomaʻo a me ka uliuli e hana i ke kukui keʻokeʻo;Ma kēiaʻano,ʻo ka waiwai kiʻekiʻe loa o ka phosphor photoluminescence ka hoʻololiʻana i ka pono, kekahi o nā kuantum o waho,ʻaʻole eʻoi aku ma mua o 75%;a hiki i ka 70% ka nui o ka hoʻoemi māmā ʻana mai ka chip.No laila, theoretically, blue-type keʻokeʻo kukui ʻAʻole e ʻoi aku ka nui o ka pono kukui LED ma mua o 340 Lm/W.I nā makahiki i hala iho nei, ua hōʻea ʻo CREE i 303Lm/W.Inā pololei nā hopena hōʻike, pono e hoʻolauleʻa.

2. ʻO ka ʻulaʻula, ka ʻōmaʻomaʻo a me ka uliuli ʻekolu hui kala kumuNā ʻano LED RGBkomoRGBW- ʻano LED, etc.

ʻO R-LED (ʻulaʻula) + G-LED ('ōmaʻomaʻo) + B-LED (uliuli) ʻekolu kukui-emitting diodes i hui pū ʻia, a ʻo nā waihoʻoluʻu kumu ʻekolu o ka ʻulaʻula, ʻōmaʻomaʻo a me nā kukui uliuli i hoʻokuʻu ʻia e hui pono ʻia i loko o ke ākea a lilo i keʻokeʻo. māmā.I mea e hana ai i ke kukui keʻokeʻo kiʻekiʻe ma kēia ʻano, ʻo ka mea mua, nā LED o nā kala like ʻole, ʻoi aku ka nui o nā LED ʻōmaʻomaʻo, pono nā kumu kukui kūpono.Hiki ke ʻike ʻia kēia mai ka ʻike ʻana o ke kukui ʻōmaʻomaʻo ma kahi o 69% o ka "mālamalama keʻokeʻo isoenergy".I kēia manawa, ua kiʻekiʻe loa ka maikaʻi o nā LED uliuli a me ka ʻulaʻula, me ka nui o ka nui o loko ma mua o 90% a me 95% paʻa, akā ʻo ka maikaʻi kūloko o nā LED ʻōmaʻomaʻo e mamao loa ma hope.Ua kapa ʻia kēia ʻano o ke kukui ʻōmaʻomaʻo haʻahaʻa o nā LED i hoʻokumu ʻia i ka GaN ʻo ka "'ōmaʻomaʻo ʻōmaʻomaʻo."ʻO ke kumu nui ʻaʻole i loaʻa i nā LED ʻōmaʻomaʻo kā lākou mau mea epitaxial ponoʻī.He haʻahaʻa loa ka pono o ka phosphorus arsenic nitride moʻo mea i loaʻa i ka laulā melemele-'ōmaʻomaʻo.Eia nō naʻe, me ka hoʻohana ʻana i nā mea epitaxial ʻulaʻula a uliuli paha e hana i nā LED ʻōmaʻomaʻo ma lalo o nā kūlana haʻahaʻa haʻahaʻa o kēia manawa, no ka mea, ʻaʻohe phosphor hoʻololi nalowale, ʻoi aku ka maikaʻi o ka ʻōmaʻomaʻo LED ma mua o ka uliuli + phosphor kukui ʻōmaʻomaʻo.Ua hōʻike ʻia ua hiki i kona pono luminous i 291Lm/W ma lalo o 1mA kūlana o kēia manawa.Eia nō naʻe, hāʻule ka maikaʻi o ke kukui ʻōmaʻomaʻo i hoʻokumu ʻia e ka hopena Droop i nā au nui.Ke piʻi aʻe ka nui o kēia manawa, e hāʻule koke ka hana kukui.Ma ka 350mA i kēia manawa, ʻo ka pono o ka luminous he 108Lm/W.Ma lalo o nā kūlana 1A, e emi ana ka pono o ka luminous.i 66Lm/W.

No ka hui III phosphides, ua lilo ka hoʻokuʻu ʻana i ke kukui i loko o ka hui ʻōmaʻomaʻo i mea keakea kumu no nā ʻōnaehana waiwai.ʻO ka hoʻololi ʻana i ka haku mele ʻana o AlInGaP i mea e hoʻopuka ai i ka ʻōmaʻomaʻo ma mua o ka ʻulaʻula, ʻalani a melemele paha ka hopena i ka lawa ʻole o ka hoʻopaʻa ʻana i ka mea lawe ma muli o ka haʻahaʻa haʻahaʻa o ka ikehu o ka ʻōnaehana mea, kahi e pale ai i ka hoʻohui hou ʻana o ka radiative.

I ka hoʻohālikelike, ʻoi aku ka paʻakikī o III-nitrides e hoʻokō i ka hana kiʻekiʻe, akā ʻaʻole hiki ke hoʻokō ʻia nā pilikia.Ke hoʻohana nei i kēia ʻōnaehana, e hoʻolōʻihi i ke kukui i ka hui kukui ʻōmaʻomaʻo, ʻelua mau kumu e hoʻemi ai i ka pono: ʻo ka emi ʻana o ka pono quantum waho a me ka pono uila.ʻO ka emi ʻana o ka maikaʻi quantum waho mai ka ʻoiaʻiʻo ʻoiai ʻoi aku ka haʻahaʻa o ka ʻāpana ʻōmaʻomaʻo, hoʻohana nā LED ʻōmaʻomaʻo i ka uila kiʻekiʻe mua o GaN, kahi e hoʻemi ai ka helu hoʻololi mana.ʻO ka lua o ka hemahema ʻo ia ka emi ʻana o ka LED ʻōmaʻomaʻo i ka piʻi ʻana o ka nui o ka injection a paʻa ʻia e ka hopena droop.Loaʻa ka hopena Droop i nā LED uliuli, akā ʻoi aku ka nui o kona hopena i nā LED ʻōmaʻomaʻo, e hopena i ka hana maʻamau o kēia manawa.Eia nō naʻe, he nui nā manaʻo e pili ana i nā kumu o ka hopena droop, ʻaʻole wale ʻo Auger recombination - aia lākou i ka dislocation, ka lawe ʻana a i ʻole ka leakage electron.Hoʻonui ʻia ka mea hope e kahi māla uila kūloko kiʻekiʻe.

No laila, ke ala e hoʻomaikaʻi ai i ka māmā māmā o nā LED ʻōmaʻomaʻo: ma kekahi ʻaoʻao, e aʻo pehea e hōʻemi ai i ka hopena Droop ma lalo o nā kūlana o nā mea epitaxial e loaʻa nei e hoʻomaikaʻi i ka pono māmā;ma ka lima 'ē aʻe, e hoʻohana i ka photoluminescence huli ana o uliuli LED a me ka uliuli phosphors e emit 'ōmaʻomaʻo malamalama.Hiki i kēia ʻano ke loaʻa i ke kukui ʻōmaʻomaʻo kiʻekiʻe, hiki ke hoʻokō i kahi ʻoi aku ka maikaʻi o ka māmā ma mua o ke kukui keʻokeʻo o kēia manawa.He kukui ʻōmaʻomaʻo non-spontaneous, a ʻo ka emi ʻana o ka maʻemaʻe kala ma muli o kāna hoʻonui spectral he mea maikaʻi ʻole ia no nā hōʻike, akā ʻaʻole kūpono ia no nā poʻe maʻamau.ʻAʻohe pilikia no ka mālamalama.ʻO ka ʻōmaʻomaʻo kukui efficacy i loaʻa i kēia ʻano hiki ke ʻoi aku ka nui ma mua o 340 Lm / W, akā ʻaʻole naʻe e ʻoi aku ma mua o 340 Lm / W ma hope o ka hui ʻana me ke kukui keʻokeʻo.ʻO ke kolu, e hoʻomau i ka noiʻi a loaʻa i kāu mau mea epitaxial ponoʻī.Ma kēia ala wale nō, aia kahi ʻōlinolino o ka manaʻolana.Ma ka loaʻa ʻana o ke kukui ʻōmaʻomaʻo i ʻoi aku ka kiʻekiʻe ma mua o 340 Lm/w, hiki ke kiʻekiʻe ke kukui keʻokeʻo i hui pū ʻia e nā kukui ʻulaʻula mua ʻekolu o ka ʻulaʻula, ka ʻōmaʻomaʻo a me ka uliuli ma mua o ka palena hoʻomālamalama o 340 Lm/w o nā kukui keʻokeʻo keʻokeʻo polū. .Ua ʻōlelo ʻo W.

3. LED Ultravioletpuʻupuʻu + ʻekolu phosphors waihoʻoluʻu mua e hoʻomāmā.

ʻO ka hemahema koʻikoʻi o nā ʻano LED keʻokeʻo ʻelua ma luna nei, ʻo ia ka hāʻawi ʻole ʻana o ka luminosity a me ka chromaticity.ʻAʻole hiki ke ʻike ʻia ke kukui Ultraviolet e ka maka kanaka.No laila, ma hope o ka puka ʻana o ke kukui ultraviolet i ka puʻupuʻu, ua hoʻopili ʻia e nā phosphors kala mua ʻekolu i loko o ka papa hoʻopili, a hoʻololi ʻia i ke kukui keʻokeʻo e ka photoluminescence o nā phosphors, a laila hoʻokuʻu ʻia i ka lewa.ʻO kēia kāna mea maikaʻi loa, e like me nā kukui fluorescent kuʻuna, ʻaʻohe ona spatial color unevenness.Eia nō naʻe, ʻaʻole hiki ke kiʻekiʻe ke kiʻekiʻe o ke kukui theoretical o ka ultraviolet chip keʻokeʻo LED ma mua o ka waiwai theoretical o ke kukui keʻokeʻo polū, waiho wale i ka waiwai theoretical o ke kukui keʻokeʻo RGB.Eia nō naʻe, ma o ka hoʻomohala ʻana i nā phosphors kala ʻekolu-kumu kumu kūpono no ka hoʻoulu ʻana ultraviolet hiki iā mākou ke loaʻa nā LED keʻokeʻo ultraviolet kokoke a ʻoi aku ka maikaʻi ma mua o nā LED keʻokeʻo ʻelua ma luna aʻe i kēia pae.ʻO ka kokoke loa i nā LED ultraviolet uliuli, ʻoi aku ka nui o lākou.ʻOi aku ka nui, ʻaʻole hiki i nā LED keʻokeʻo keʻokeʻo UV a me nā hawewe pōkole.