Umgomo We-Semiconductor LED Kudingeka Uqondwe

Ikristalu elikhanyayo elikhiphayo i-Inumgarnet (CE3: yag) ligaywa libe yimpushana bese lixutshwa nalo ekunamathiseleni okuminyene. Lapho i-chip ye-LED ikhipha ukukhanya okuluhlaza okwesibhakabhaka, enye i-Blu -ray izoguqulwa yile crystal enohlu olubanzi lwezibukeli (cishe 580nm maphakathi ne-spectrum). (Eqinisweni, i-YAG ye-crystal eyodwa exubene ne-CE ibhekwa njengokucwayiza kune-phosphorus.) Ngenxa yokuthi ukukhanya okuphuzi kuzovuselela ama-receptors abomvu nokuluhlaza emehlweni e-nqunu, ukukhanya okuluhlaza okwesibhakabhaka kwe-LED ngokwayo kukwenza kubukeke njengokukhanya okumhlophe. Futhi umbala wayo uvame ukubizwa ngokuthi “Okumhlophe kokukhanya kwenyanga ”. Le ndlela yokwenza ukukhanya okumhlophe kwe-LED ithuthukiswe yi-Nichiacorporation futhi yaqala ukukhiqiza ukukhanya okumhlophe kwe-LED ngo-1996. Uma ufuna ukulungisa umbala wokukhanya ophuzi ophuzi, ungasebenzisa enye insimbi yomhlaba engavamile noma ukufaka esikhundleni se- (CE) efakwe ku-CE3: yag, futhi nendlela yokufaka izingxenye noma yonke i-aluminium ku-YAG ukukwenza. Ngokusekelwe ezicini ze-spectrum yayo, izinto ezibomvu neziluhlaza zibukeka zincane kunalezo zomthombo wokukhanya obanzi ngaphansi kwalokhu kuvezwa kwe-LED. Ngaphezu kwalokho, ngenxa yokuguqulwa kwezimo zokukhiqiza, izinga lokushisa lombala walo mkhiqizo oqediwe alifani, kusukela kuphuzi elifudumele kuya eluhlaza okwesibhakabhaka. Ngakho-ke, ohlelweni lokukhiqiza. Enye indlela emhlophe-ekhanyayo ye-LED ifana nesibani se-fluorescent. I-LED ekhipha ukukhanya okucishe kube yi-ultraviolet izopendwe ngezingxube ezimbili ze-phosphorus, eyodwa ibomvu neluhlaza okwesibhakabhaka, kanti enye iluhlaza. Ithusi ne-aluminium ene-zinc sulfide (ZNS). Kodwa-ke, ngenxa yokuthi imisebe ye-ultraviolet ingenza i-epoxy resin iqhekeke futhi iwohloke ezintweni ezinamathelayo, ukukhiqizwa kuba nzima kakhulu futhi isikhathi sokuphila sifushane. Uma kuqhathaniswa nendlela yokuqala, inokusebenza okuphansi futhi ikhiqiza ukushisa okwengeziwe (ngoba i-STOKESSHIFT yangaphambili ine-yangaphambili enkulu), kodwa inzuzo ukuthi izici ze-spectrum zingcono. Ngenxa yokuthi amandla e-LED okukhanya kwe-UV aphezulu, nakuba ukusebenza kahle kuphansi, ukukhanya kuphuma kuyafana. Indlela yakamuva yokwenza ama-LED amhlophe ayisawusebenzisi umzimba wokukhanya we-phosphorus. Indlela entsha yokukhulisa i-zinc ku-zinc -zinc (ZNSE) substrate. Uma ivuliwe, indawo yayo esebenzayo izokhipha ukukhanya okuluhlaza okwesibhakabhaka futhi i-substrate izoba phuzi, futhi kuzoba ukukhanya okumhlophe ukuxutshwa.