Ngā momo LED māKo ngā huarahi hangarau matua o te rama LED mā mō te whakamārama ko: ① Momo rama LED kikorangi + momo whēkau; ②Momo rama RGB; ③ Momo rama hihi-whero + momo whēkau.

1. Mārama kikorangi – he maramara LED + he momo whūkura kōwhai-kakariki tae atu ki ngā momo whūkura maha-tae me ētahi atu momo.

Ka mimiti te paparanga whōkawa kōwhai-kakariki i tētahi wāhanga o te mārama kikorangi mai i te maramara LED hei whakaputa i te photoluminescence. Ka tukuna te wāhanga kē atu o te mārama kikorangi mai i te maramara LED mā te paparanga whōkawa ka hanumi ki te mārama kōwhai-kakariki e tukuna ana e te whōkawa i ngā wāhi rerekē o te wāhi. Ka whakaranua ngā mārama whero, kakariki me te kikorangi hei hanga mārama mā; I roto i tēnei tikanga, ko te uara ariā teitei rawa atu o te whai huatanga tahuritanga photoluminescence whōkawa, tētahi o ngā whai huatanga matū o waho, kāore e neke ake i te 75%; ā, ko te tere tango mārama mōrahi mai i te maramara ka taea anake te eke ki te 70%. Nō reira, i roto i te ariā, ko te whai huatanga mārama mōrahi o te mārama mā momo kikorangi, ko te 340 Lm/W. I ngā tau kua pahure ake nei, kua eke te CREE ki te 303Lm/W. Mena he tika ngā hua o te whakamātautau, he mea tika kia whakanuia.

2. He huinga tae matua e toru, whero, kakariki me te kikorangiNgā momo rama RGBwhakauruRGBW- Ngā momo LED, me ētahi atu

R-LED (whero) + G-LED (kakariki) + B-LED (kikorangi) e toru ngā diode rama-whakaputa e honoa ana, ā, ko ngā tae matua e toru o te rama whero, kakariki me te kikorangi e tukuna ana ka whakaranua tika ki te wāhi hei hanga rama mā. Hei whakaputa i te rama mā tino whai hua i tēnei ara, tuatahi, me whai hua ngā rama LED o ngā tae rerekē, inā koa ngā rama LED kakariki. Ka kitea tēnei mai i te meka e 69% o te "rama mā isoenergy" te rama kakariki. I tēnei wā, he tino teitei te whai huatanga o te rama o ngā rama LED kikorangi me te whero, me te nui ake o te whai huatanga irahiko ā-roto i te 90% me te 95%, engari kei muri rawa te whai huatanga irahiko ā-roto o ngā rama LED kakariki. Ko tēnei āhuatanga o te iti o te whai huatanga rama kakariki o ngā rama LED e hangai ana ki te GaN ka kiia ko te "āputa rama kakariki." Ko te take matua he kāore anō kia kitea e ngā rama LED kakariki ā rātou ake rauemi epitaxial. He tino iti te whai huatanga o ngā rauemi raupapa nitride phosphorus arsenic o nāianei i roto i te whānuitanga o te whānuitanga kōwhai-kakariki. Heoi, mā te whakamahi i ngā rauemi epitaxial whero, kikorangi rānei hei hanga i ngā LED kakariki, ka nui ake te pai o te kanapa o te LED kakariki i te rama kakariki kikorangi + phosphor. E ai ki ngā pūrongo, ka eke tōna pai o te kanapa ki te 291Lm/W i raro i te āhua o te iahiko 1mA. Heoi, ka tino heke te pai o te kanapa o te rama kakariki nā te pānga o te Droop i ngā iahiko nui ake. Ina piki ake te pai o te iahiko, ka tere te heke o te pai o te kanapa. I te iahiko 350mA, ko te pai o te kanapa he 108Lm/W. I raro i ngā āhuatanga 1A, ka heke te pai o te kanapa. ki te 66Lm/W.

Mō ngā phosphides Rōpū III, kua noho te tukunga mārama ki roto i te awhi kakariki hei arai matua mō ngā pūnaha rauemi. Mā te whakarerekē i te hanganga o AlInGaP kia puta ai he kakariki kaua ki te whero, karaka, karaka rānei, ka hua ake he iti te here o ngā kaikawe nā te iti o te āputa pūngao o te pūnaha rauemi, e aukati ana i te whakakotahitanga hihi whai hua.

He rerekē, he uaua ake te whakatutuki i te pai o te mahi a ngā III-nitrides, engari kāore e taea te wikitoria i ngā uauatanga. Mā te whakamahi i tēnei pūnaha, e toro atu ana te mārama ki te awhi rama matomato, e rua ngā āhuatanga ka heke te pai o te mahi ko: te hekenga o te pai o te irahiko ā-waho me te pai o te hiko. Ko te hekenga o te pai o te irahiko ā-waho i ahu mai i te mea ahakoa he iti ake te āputa awhi matomato, ka whakamahia e ngā LED matomato te ngaohiko whakamua teitei a GaN, ka heke te tere tahuritanga hiko. Ko te ngoikoretanga tuarua ko te hekenga o te LED matomato i te pikinga o te kiato o te iahiko werohanga, ā, ka mau i te pānga heke. Ka puta anō te pānga heke i roto i ngā LED kikorangi, engari he nui ake tōna pānga i roto i ngā LED matomato, ka hua ake he iti ake te pai o te iahiko whakahaere tikanga. Heoi, he maha ngā whakapae mō ngā take o te pānga heke, ehara i te mea ko te whakakotahitanga Auger anake - kei roto ko te hekenga, te waipuke kawe, te turuturu hiko rānei. Ka whakarei ake te mea whakamutunga e te mara hiko ā-roto ngaohiko teitei.

Nō reira, ko te huarahi hei whakapai ake i te whai huatanga o te mārama o ngā LED matomato: i tētahi taha, akohia me pēhea te whakaiti i te pānga Droop i raro i ngā āhuatanga o ngā rauemi epitaxial o nāianei hei whakapai ake i te whai huatanga o te mārama; i tētahi atu taha, whakamahia te huringa photoluminescence o ngā LED kikorangi me ngā phosphor matomato hei tuku i te mārama matomato. Ka taea e tēnei tikanga te whiwhi i te mārama matomato tino whai hua, e taea ai te whakatutuki i te whai huatanga o te mārama teitei ake i te mārama mā o nāianei. He mārama matomato kore-tūpono, ā, ko te hekenga o te parakore o te tae i puta mai i tōna whānuitanga spectral he mea kino mō ngā whakaaturanga, engari kāore e pai mō te tangata noa. Kāore he raruraru mō te mārama. Ko te whai huatanga o te mārama matomato i whiwhihia e tēnei tikanga he tūponotanga kia nui ake i te 340 Lm/W, engari kāore tonu e neke ake i te 340 Lm/W i muri i te whakakotahitanga ki te mārama mā. Tuatoru, haere tonu ki te rangahau me te kimi i ō ake rauemi epitaxial. Mā tēnei anake, ka kitea he hihi o te tumanako. Mā te whiwhi i te mārama matomato he teitei ake i te 340 Lm/w, ka taea e te mārama mā e honoa ana e ngā LED tae matua e toru o te whero, te matomato me te kikorangi te teitei ake i te rohe whai huatanga o te 340 Lm/w o ngā LED mārama mā momo maramara kikorangi. W.

3. Rama hihi-wheromaramara + e toru ngā whōwhā tae tuatahi e tuku ana i te mārama.

Ko te ngoikoretanga matua o ngā momo rama LED mā e rua i runga ake nei ko te koretake o te tohatoha ā-wāhi o te kanapa me te tae. Kāore e taea e te kanohi tangata te kite i te mārama ultraviolet. Nō reira, i muri i te putanga o te mārama ultraviolet i te maramara, ka mimitihia e ngā phosphor tae matua e toru i roto i te paparanga takai, ā, ka hurihia hei mārama mā e te photoluminescence o ngā phosphor, kātahi ka tukuna ki te ātea. Koinei tōna painga nui, pērā i ngā rama fluorescent tuku iho, kāore he koretake o te tae ā-wāhi. Heoi, ko te whai huatanga o te mārama matapae ultraviolet o te rama LED mārama ma e kore e taea te teitei ake i te uara matapae o te mārama ma kikorangi, me te kore e kōrero mō te uara matapae o te mārama ma RGB. Heoi, mā te whakawhanaketanga o ngā phosphor tae matua e toru te whai huatanga e tika ana mō te whakaoho ultraviolet ka taea e tātou te whiwhi rama LED mā ultraviolet e tata ana, e pai ake ana rānei i ngā rama LED mā e rua i runga ake nei i tēnei wā. Ko te tata atu ki ngā rama LED ultraviolet kikorangi, ko te nui ake o te tūponotanga. Ko te nui ake, kāore e taea te whiwhi rama LED mā momo UV ngaru-waenga me te ngaru-poto.