Nā ʻano LED keʻokeʻoʻO nā ala loea nui o ka LED keʻokeʻo no ke kukui ʻana: ① LED polū + ʻano phosphor; ②ʻAno LED RGB; ③ ʻAno kukui ultraviolet LED + phosphor.

1. Kukui polū - ʻāpana LED + ʻano phosphor melemele-ʻōmaʻomaʻo e komo pū ana me nā mea hoʻohui phosphor kala like ʻole a me nā ʻano ʻē aʻe.

Hoʻopili ka papa phosphor melemele-ʻōmaʻomaʻo i kahi hapa o ke kukui polū mai ka chip LED e hana i ka photoluminescence. Hoʻouna ʻia kekahi ʻāpana o ke kukui polū mai ka chip LED ma o ka papa phosphor a hui pū me ke kukui melemele-ʻōmaʻomaʻo i hoʻopuka ʻia e ka phosphor ma nā wahi like ʻole o ka hakahaka. Hoʻohui ʻia nā kukui ʻulaʻula, ʻōmaʻomaʻo a me ka polū e hana i ke kukui keʻokeʻo; Ma kēia ʻano hana, ʻo ka waiwai theoretical kiʻekiʻe loa o ka pono hoʻololi phosphor photoluminescence, kekahi o nā pono quantum waho, ʻaʻole e ʻoi aku ma mua o 75%; a ʻo ka nui o ka unuhi kukui mai ka chip hiki ke hiki i kahi 70%. No laila, ma ke ʻano theoretical, ʻaʻole e ʻoi aku ka nui o ka pono luminous LED ʻano polū ma mua o 340 Lm/W. I nā makahiki i hala iho nei, ua hōʻea ʻo CREE i 303Lm/W. Inā pololei nā hopena hoʻāʻo, pono e hoʻolauleʻa.

2. ʻEkolu hui kala mua ʻulaʻula, ʻōmaʻomaʻo a me ka uliuliNā ʻano LED RGBhoʻokomo pūNā ʻano RGBW- LED, a pēlā aku

ʻO R-LED (ʻulaʻula) + G-LED (ʻōmaʻomaʻo) + B-LED (polū) ʻekolu mau diode hoʻomāmā i hui pū ʻia, a ʻo nā kala mua ʻekolu o ke kukui ʻulaʻula, ʻōmaʻomaʻo a me ka polū i hoʻopuka ʻia e hui pololei ʻia i ka lewa e hana i ke kukui keʻokeʻo. I mea e hana ai i ke kukui keʻokeʻo kiʻekiʻe ma kēia ʻano, ʻo ka mea mua, pono nā LED o nā kala like ʻole, ʻoiai nā LED ʻōmaʻomaʻo, e lilo i mau kumu kukui kūpono. Hiki ke ʻike ʻia kēia mai ka ʻoiaʻiʻo ʻo ke kukui ʻōmaʻomaʻo e helu ana ma kahi o 69% o ka "kukui keʻokeʻo isoenergy". I kēia manawa, ua kiʻekiʻe loa ka pono o ka mālamalama o nā LED polū a me ka ʻulaʻula, me nā pono quantum kūloko e ʻoi aku ana ma mua o 90% a me 95%, akā ʻo ka pono quantum kūloko o nā LED ʻōmaʻomaʻo e lohi loa ana ma hope. ʻO kēia hanana o ka pono kukui ʻōmaʻomaʻo haʻahaʻa o nā LED GaN-based ua kapa ʻia ʻo "green light gap." ʻO ke kumu nui, ʻaʻole i loaʻa i nā LED ʻōmaʻomaʻo kā lākou mau mea epitaxial ponoʻī. ʻO nā mea phosphorus arsenic nitride series e kū nei he haʻahaʻa loa ka pono ma ka laulā spectrum melemele-ʻōmaʻomaʻo. Eia nō naʻe, ʻo ka hoʻohana ʻana i nā mea epitaxial ʻulaʻula a uliuli paha e hana i nā LED ʻōmaʻomaʻo ma lalo o nā kūlana haʻahaʻa o ke au, no ka mea, ʻaʻohe pohō hoʻololi phosphor, ʻoi aku ka kiʻekiʻe o ka pono luminous o ka LED ʻōmaʻomaʻo ma mua o ke kukui ʻōmaʻomaʻo polū + phosphor. Ua hōʻike ʻia ua hiki aku kona pono luminous i 291Lm/W ma lalo o ke kūlana o kēia manawa 1mA. Eia nō naʻe, hāʻule nui ka pono luminous o ke kukui ʻōmaʻomaʻo i hoʻokumu ʻia e ka hopena Droop i nā au nui aʻe. Ke piʻi ka nui o ke au, hāʻule koke ka pono luminous. Ma ke au 350mA, ʻo ka pono luminous he 108Lm/W. Ma lalo o nā kūlana 1A, emi ka pono luminous. i 66Lm/W.

No nā phosphides Hui III, ʻo ka hoʻopuka ʻana i ka mālamalama i loko o ke kāʻei ʻōmaʻomaʻo ua lilo ia i mea keakea nui no nā ʻōnaehana mea. 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 e hopena i ka lawa ʻole o ka hoʻopaʻa ʻana o ka mea lawe ma muli o ka haʻahaʻa o ka ikehu o ka ʻōnaehana mea, kahi e pale ai i ka hoʻohuihui radiative maikaʻi.

I ka hoʻohālikelike ʻana, ʻoi aku ka paʻakikī no nā III-nitrides e hoʻokō i ka pono kiʻekiʻe, akā ʻaʻole hiki ke lanakila ʻia nā pilikia. Ke hoʻohana nei i kēia ʻōnaehana, e hoʻolōʻihi ana i ke kukui i ke kāʻei kukui ʻōmaʻomaʻo, ʻelua mau mea e hoʻemi ai i ka pono: ka emi ʻana o ka pono quantum waho a me ka pono uila. ʻO ka emi ʻana o ka pono quantum waho mai ka ʻoiaʻiʻo ʻoiai ʻoi aku ka haʻahaʻa o ka hakahaka kāʻei ʻōmaʻomaʻo, hoʻohana nā LED ʻōmaʻomaʻo i ka volta mua kiʻekiʻe o GaN, kahi e hoʻemi ai i 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 ke au injection a ua paʻa ʻia e ka hopena droop. Loaʻa pū ka hopena Droop i nā LED polū, akā ʻoi aku ka nui o kona hopena i nā LED ʻōmaʻomaʻo, e hopena ana i ka pono hana maʻamau haʻahaʻa. Eia nō naʻe, nui nā kuhi e pili ana i nā kumu o ka hopena droop, ʻaʻole wale ka Auger recombination - hoʻokomo lākou i ka dislocation, ka overflow carrier a i ʻole ka electron leakage. Hoʻonui ʻia ka mea hope e kahi kahua uila kūloko kiʻekiʻe-voltage.

No laila, ke ala e hoʻomaikaʻi ai i ka pono o ke kukui o nā LED ʻōmaʻomaʻo: ma ka ʻaoʻao hoʻokahi, e aʻo pehea e hōʻemi ai i ka hopena Droop ma lalo o nā kūlana o nā mea epitaxial e kū nei e hoʻomaikaʻi i ka pono o ke kukui; ma ka ʻaoʻao ʻē aʻe, e hoʻohana i ka hoʻololi photoluminescence o nā LED polū a me nā phosphors ʻōmaʻomaʻo e hoʻopuka i ke kukui ʻōmaʻomaʻo. Hiki i kēia ʻano ke loaʻa i ke kukui ʻōmaʻomaʻo kiʻekiʻe, kahi e hiki ai ke hoʻokō i kahi pono kukui kiʻekiʻe ma mua o ke kukui keʻokeʻo o kēia manawa. He kukui ʻōmaʻomaʻo ʻaʻole ia he manawa koke, a ʻo ka emi ʻana o ka maʻemaʻe o ke kala i hoʻokumu ʻia e kona hoʻonui ʻana i ka spectral he mea maikaʻi ʻole ia no nā hōʻike, akā ʻaʻole kūpono ia no ka poʻe maʻamau. ʻAʻohe pilikia no ke kukui ʻana. ʻO ka pono o ke kukui ʻōmaʻomaʻo i loaʻa e kēia ʻano hana he hiki ke ʻoi aku ma mua o 340 Lm/W, akā ʻaʻole ia e ʻoi aku ma mua o 340 Lm/W ma hope o ka hui pū ʻana me ke kukui keʻokeʻo. ʻO ke kolu, e hoʻomau i ka noiʻi a loaʻa kāu mau mea epitaxial ponoʻī. Ma kēia ala wale nō, aia kahi ʻālohilohi o ka manaʻolana. Ma ka loaʻa ʻana o ke kukui ʻōmaʻomaʻo i ʻoi aku ma mua o 340 Lm/w, ʻo ke kukui keʻokeʻo i hui pū ʻia e nā LED kala mua ʻekolu o ka ʻulaʻula, ka ʻōmaʻomaʻo a me ka uliuli hiki ke ʻoi aku ma mua o ka palena pono o ka luminous o 340 Lm/w o nā LED kukui keʻokeʻo ʻano ʻāpana polū. W.

3. ʻO ka LED Ultravioletʻāpana + ʻekolu mau phosphor kala mua e hoʻopuka i ka mālamalama.

ʻO ke kīnā nui o nā ʻano ʻelua o nā LED keʻokeʻo i luna nei, ʻo ia ka hoʻolaha like ʻole o ka luminosity a me ke chromaticity. ʻAʻole hiki ke ʻike ʻia ka mālamalama ultraviolet e ka maka kanaka. No laila, ma hope o ka puka ʻana o ke kukui ultraviolet mai ka chip, ua omo ʻia e nā phosphors kala mua ʻekolu i loko o ka papa hoʻopili, a ua hoʻololi ʻia i kukui keʻokeʻo e ka photoluminescence o nā phosphors, a laila hoʻokuʻu ʻia i ka lewa. ʻO kēia kona pōmaikaʻi nui loa, e like me nā kukui fluorescent kuʻuna, ʻaʻohe ona kala like ʻole. Eia naʻe, ʻaʻole hiki ke kiʻekiʻe ka pono o ke kukui theoretical o ka LED kukui keʻokeʻo ultraviolet chip ma mua o ka waiwai theoretical o ke kukui keʻokeʻo polū chip, ʻaʻole hoʻi e haʻi i ka waiwai theoretical o ke kukui keʻokeʻo RGB. Eia naʻe, ma o ka hoʻomohala ʻana i nā phosphors kala mua ʻekolu kiʻekiʻe kūpono no ka hoʻonāukiuki ultraviolet hiki iā mākou ke loaʻa nā LED keʻokeʻo ultraviolet kokoke a ʻoi aku paha ka maikaʻi ma mua o nā LED keʻokeʻo ʻelua i luna i kēia pae. ʻO ka kokoke ʻana i nā LED ultraviolet polū, ʻoi aku ka nui o ko lākou hiki. ʻO ka nui o ia mea, ʻaʻole hiki ke hana i nā LED keʻokeʻo ʻano nalu waena a me ka nalu pōkole UV.