Uthini umgaqo wokukhanyisa izibane ze-LED?

Uthini umgaqo wokukhanyisa izibane ze-LED? Isibane se-LED yi-chip ye-electroluminescent semiconductor semiconductor, ephiliswa kwi-bracket ngeglue yesilivere okanye iglue emhlophe, kwaye emva koko iqhagamshelwe kwi-chip kunye nebhodi yesekethe ngeengcingo zesilivere okanye zegolide, kwaye itywinwe nge-epoxy resin ngeenxa zonke ukukhusela i-core core wire. Umsebenzi, igobolondo ifakwe ekugqibeleni, ngoko ke ukuxhathisa ukothuka kwesibane se-LED kulungile. 1. Ubume bentsimbi yesibane Enye yezona zinto zibalulekileyo ezikhupha izibane ze-LED (Light Emitting Diode) yintsimbi yesibane elingana neembotyi zemung ngaphakathi kwesibane. Nangona ubukhulu bayo buncinci, umsebenzi wayo awuncinci.

Emva kokusondeza kwisakhiwo sesibane sesibane se-LED, siya kufumana i-wafer enobungakanani bembewu yesesame. Ulwakhiwo lwetshiphu luntsonkothe ​​kakhulu, kwaye lwahlulahlulwe lwangamaleko aliqela: umaleko ongaphezulu we-Z ubizwa ngokuba ngumaleko we-semiconductor wohlobo lwe-P, umaleko ophakathi ngumaleko okhupha ukukhanya, kwaye umaleko osezantsi ubizwa ngokuba yi-N-uhlobo lwe-semiconductor maleko. Ke, isibane se-LED sikhutshwa njani? 2. Umgaqo wokukhutshwa kokukhanya Ukusuka kumbono womzimba: xa i-current idlula kwi-wafer, i-electrons kwi-N-type semiconductor kunye nemingxuma kwi-P-type semiconductor ingqubuzana ngobudlova kwaye iphinde iphinde iphinde iphinde iphinde iphinde iphinde ikhuphe ukukhanya ukuze ivelise iifotoni, ezikhupha amandla ngendlela yeefotoni (oko kukuthi, ukukhanya okubonayo).

I-LED ekhokelwayo ikwabizwa ngokuba yi-diode yokukhupha ukukhanya, umthamo wayo uncinci kakhulu kwaye unobuthathaka kakhulu, awulungele ukusetyenziswa ngokuthe ngqo. Ke umyili wongeze iqokobhe elikhuselayo kuyo kwaye wayitywina ngaphakathi, ngaloo ndlela yenza intsimbi yesibane se-LED ekulula ukuyisebenzisa. Emva kokudibanisa amaso amaninzi ezibane ze-LED kunye, izibane ezahlukeneyo ze-LED zinokusekwa.

3. Izibane ze-LED zemibala eyahlukeneyo I-Semiconductors yezinto ezahlukeneyo ziya kuvelisa imibala eyahlukeneyo yokukhanya, njengokukhanya okubomvu, ukukhanya okuluhlaza, ukukhanya okuluhlaza okwesibhakabhaka njalonjalo. Nangona kunjalo, akukho zixhobo ze-semiconductor ezinokukhupha ukukhanya okumhlophe ukuza kuthi ga ngoku. Kodwa ziveliswa njani amaso ezibane ezimhlophe ze-LED esihlala sizisebenzisa? 4. Isizukulwana sezibane ezimhlophe ze-LED Apha kufuneka sikhankanye iNobel laureate - uGqr. Shuji Nakamura.

Wayila i-LED eluhlaza okwesibhakabhaka, ekwabeka isiseko esithile se-LED emhlophe. Ngokusekelwe kulo mnikelo obalulekileyo, wanikwa i-Nobel Prize kwi-Physics kwi-2014. Ngokuphathelele indlela ii-LED eziluhlaza ziguqulwa ngayo zibe yi-LED ezimhlophe, esona sizathu sikhulu kukuba kukho uluhlu olongezelelweyo lwe-phosphor kwi-chip.

Umgaqo osisiseko wokukhutshwa kokukhanya awukatshintshi kakhulu: Phakathi kweeleyibhile ezimbini ze-semiconductor, ii-electron kunye nemingxuma ziyangqubana kwaye ziphinde zidityaniswe ukuvelisa iifotoni eziluhlaza kucwecwe olukhupha ukukhanya. Inxalenye yokukhanya okuluhlaza okwenziweyo iya kudlula kwi-coating ye-fluorescent kwaye ikhutshwe ngokuthe ngqo; inxalenye eseleyo iyakubetha i-fluorescent coating kwaye inxibelelane nayo ukuvelisa iifotoni ezityheli. Ukukhanya okumhlophe kuveliswa ngokudibanisa (ukuxuba) iifotoni eziluhlaza kunye neefotoni ezityheli.

Okwangoku, uluhlu lwezicelo zezibane ze-LED zixhaphake kakhulu. Ukuthatha iXinshengkai Optoelectronics njengomzekelo, imichilo yokukhanya ye-LED eveliswa yiyo isetyenziswa ngokubanzi kumhombiso wangaphakathi nangaphandle, ukubekwa kwendawo yesitrato, izinto zokubala zobucwebe, iigadi, iimoto, amachibi, iimpawu zentengiso, iihotele, iivenkile ezinkulu, i-KTV, iindawo zokuzonwabisa, njl.