Yintoni i-LED?

Abantu baye baqonda ulwazi olusisiseko lokuba izinto ze-semiconductor zinokuvelisa ukukhanya kwiminyaka eyi-50 eyadlulayo.Kwi-1962, u-Nick Holonyak Jr. we-General Electric Company waphuhlisa usetyenziso lokuqala olusebenzayo lwe-diode ebonakalayo ekhupha ukukhanya.

I-LED sisishunqulelo se-diode ephumayo yokukhanya kwesiNgesi, isakhiwo sayo esisisiseko sisiqhekeza semiconductor ye-electroluminescent semiconductor, ebekwe kwishelufu ekhokelayo, kwaye emva koko itywinwe nge-epoxy resin ejikelezayo, oko kukuthi, i-encapsulation eqinile, ngoko inokukhusela ucingo lwangaphakathi lwangaphakathi, ke i-LED inokusebenza kakuhle kwe-seismic.

Idatha enkulu ye-AIOT ikholelwa ukuba ekuqaleni ii-LED zazisetyenziswa njengemithombo yokukhanya yesixhobo kunye neemitha, kwaye kamva ii-LED zemibala eyahlukeneyo yokukhanya zazisetyenziswa ngokubanzi kwizibane zeempawu zendlela kunye nezikrini zokubonisa indawo ezinkulu, ezivelise inzuzo entle kwezoqoqosho nezentlalo.Thatha i-12-intshi yerobhothi ebomvu njengomzekelo.EUnited States, isibane se-incandescent sobomi obude, esisebenza kancinci se-140-watt sasisetyenziswa ekuqaleni njengomthombo wokukhanya, ovelisa ukukhanya okumhlophe okungama-2000.Emva kokudlula kwisihluzi esibomvu, ilahleko yokukhanya yi-90%, ishiya kuphela i-lumens engama-200 yokukhanya okubomvu.Kwisibane esitsha esenziwe, inkampani isebenzisa imithombo yokukhanya ye-LED ebomvu ye-18, kubandakanywa nokulahleka kweesekethe, i-watts ye-14 yokusetyenziswa kwamandla, inokuvelisa umphumo ofanayo wokukhanya.Izibane zezibonakaliso zemoto nazo ziyintsimi ebalulekileyo yezicelo zokukhanya kwe-LED.

Umgaqo we-LED

I-LED (i-Light Emitting Diode), sisixhobo esiqinileyo se-semiconductor esinokuthi siguqule ngokuthe ngqo umbane ekukhanyeni.Intliziyo ye-LED yi-chip ye-semiconductor, enye isiphelo se-chip ifakwe kwinkxaso, enye isiphelo sisibonda esibi, kwaye esinye isiphelo sidibaniswe kwi-pole positive ye-power supply, ukuze yonke i-chip ifakwe. nge epoxy resin.I-wafer ye-semiconductor yenziwe ngamacandelo amabini, enye inxalenye yi-P-type semiconductor, apho imingxuma ilawula, kwaye enye isiphelo yi-N-type semiconductor, eyona nto i-electrons.

Kodwa xa ezi zibini ze-semiconductors zixhunyiwe, "i-PN junction" yenziwa phakathi kwabo.Xa izenzo zangoku kwi-chip ngocingo, ii-electron ziya kutyhalelwa kwindawo ye-P, apho i-electron kunye nemingxuma iphinda ihlangane, kwaye ikhuphe amandla ngendlela yeefotoni.Lo ngumgaqo wokukhutshwa kokukhanya kwe-LED.Ubude bokukhanya bokukhanya bukwangumbala wokukhanya, ogqitywe yimpahla eyenza "i-PN junction".


Ixesha lokuposa: Aug-27-2021
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