Yini i-LED?

Abantu baye baqonda ulwazi oluyisisekelo lokuthi izinto ze-semiconductor zingakhiqiza ukukhanya eminyakeni engu-50 edlule.Ngo-1962, u-Nick Holonyak Jr. we-General Electric Company wasungula ukusetshenziswa kokuqala okusebenzayo kwama-diode akhipha ukukhanya okubonakalayo.

I-LED iyisifinyezo se-English light emitting diode, isakhiwo sayo esiyisisekelo siwucezu lwezinto ezibonakalayo ze-electroluminescent semiconductor, ezibekwe eshalofini elinomthofu, bese livalwa nge-epoxy resin nxazonke, okungukuthi, i-encapsulation eqinile, ukuze ikwazi ukuvikela ucingo lwangaphakathi lwangaphakathi, ngakho-ke i-LED inokusebenza okuhle kokuzamazama komhlaba.

Idatha enkulu ye-AIOT ikholelwa ukuthi ekuqaleni ama-LED ayesetshenziswa njengemithombo yokukhanya yenkomba yezinsimbi namamitha, futhi kamuva ama-LED emibala ehlukahlukene ekhanyayo asetshenziswa kabanzi kumalambu esignali yomgwaqo nezikrini zokubonisa zendawo enkulu, ezikhiqize izinzuzo ezinhle zezomnotho nezenhlalo.Thatha irobhothi elibomvu eliyi-12 intshi njengesibonelo.E-United States, isibani se-incandescent sempilo ende, esisebenza kancane esingama-watt angu-140 ekuqaleni sasisetshenziswa njengomthombo wokukhanya, esikhiqiza ama-lumens angu-2000 okukhanya okumhlophe.Ngemva kokudlula isihlungi esibomvu, ukulahlekelwa ukukhanya kungama-90%, okushiya kuphela ama-lumens angu-200 okukhanya okubomvu.Esibani esisanda kwakhiwa, inkampani isebenzisa imithombo yokukhanya ye-LED eyi-18 ebomvu, kuhlanganise nokulahlekelwa kwesifunda, isamba sama-watts angu-14 okusetshenziswa kwamandla, ingaveza umphumela ofanayo wokukhanya.Izibani zesignali yezimoto nazo ziyinkambu ebalulekile yezinhlelo zokusebenza zomthombo wokukhanya we-LED.

Isimiso se-LED

I-LED (I-Light Emitting Diode), iyisisetshenziswa se-semiconductor yesimo esiqinile esingaguqula ngokuqondile ugesi ube ukukhanya.Inhliziyo ye-LED iyi-chip ye-semiconductor, umkhawulo owodwa we-chip unamathiselwe ekusekelweni, umkhawulo owodwa uyisigxobo esingalungile, kanti esinye isiphetho sixhunywe esigxotsheni esihle sokunikezwa kwamandla, ukuze yonke i-chip ihlanganiswe. nge-epoxy resin.I-wafer ye-semiconductor yakhiwe izingxenye ezimbili, ingxenye eyodwa i-semiconductor yohlobo lwe-P, lapho izimbobo zibusa khona, kanti enye isiphetho i-semiconductor yohlobo lwe-N, ikakhulukazi ama-electron.

Kodwa lapho lawa ma-semiconductors amabili exhunywe, kwakheka “i-PN junction” phakathi kwawo.Lapho ukusebenza kwamanje ku-chip ngocingo, ama-electron azophushwa aye endaweni engu-P, lapho ama-electron nezimbobo kuhlangana khona, bese ekhipha amandla ngendlela yama-photons.Lona umgomo wokukhishwa kokukhanya kwe-LED.Ubude begagasi bokukhanya buphinde bube umbala wokukhanya, onqunywa into eyenza “i-PN junction”.