Iriburiro: Chen Shuming hamwe nabandi bo muri kaminuza yubumenyi n’ikoranabuhanga yo mu majyepfo bakoze urutonde ruhuza kwant dot yumucyo utanga urumuri bakoresheje okiside ikora neza ya indium zinc oxyde nka electrode yo hagati. Diyode irashobora gukora muburyo bwiza kandi bubi busimburana bwikurikiranya, hamwe na kwant yo hanze ya 20.09% na 21.15%. Mubyongeyeho, muguhuza ibice byinshi byahujwe nibikoresho, akanama gashobora gutwarwa nimbaraga za AC murugo bidakenewe imiyoboro yinyuma yinyuma. Munsi ya disiki ya 220 V / 50 Hz, imbaraga zumucyo wumutuku hamwe numwanya wo gukina ni 15.70 lm W-1, kandi umucyo ushobora guhinduka ushobora kugera kuri 25834 cd m-2.
Diyode itanga urumuri (LEDs) yahindutse ikoranabuhanga ryambere ryo kumurika bitewe nubushobozi bwabo buhanitse, igihe kirekire, ubuzima bukomeye n’ibidukikije by’umutekano w’ibidukikije, byujuje ibisabwa ku isi hose bikoresha ingufu n’iterambere ry’ibidukikije. Nka semiconductor pn diode, LED irashobora gukora gusa munsi yimodoka ya voltage ntoya ituruka (DC). Kubera inshinge zidafite icyerekezo kandi zihoraho, kwishyuza no gushyushya Joule birundanya mubikoresho, bityo bikagabanya imikorere ya LED. Byongeye kandi, amashanyarazi ku isi yose ashingiye ahanini kumashanyarazi menshi asimburana, kandi ibikoresho byinshi byo murugo nkamatara ya LED ntibishobora gukoresha amashanyarazi menshi asimburana. Kubwibyo, iyo LED itwarwa namashanyarazi yo murugo, harasabwa iyindi AC-DC ihindura nkumuhuza kugirango uhindure ingufu za AC nini cyane mumashanyarazi ya DC. Ihinduka risanzwe rya AC-DC ririmo transformateur yo kugabanya amashanyarazi ya moteri hamwe numuzunguruko wo gukosora ibyinjira AC (reba Ishusho 1a). Nubwo guhindura imikorere ya AC-DC byinshi bishobora kugera kuri 90%, haracyari igihombo cyingufu mugihe cyo guhindura. Mubyongeyeho, kugirango uhindure urumuri rwa LED, hagomba gukoreshwa uruziga rwabigenewe rwo gutwara amashanyarazi no gutanga amashanyarazi meza kuri LED (reba Ishusho yinyongera 1b).
Ubwizerwe bwumuzunguruko uzagira ingaruka kumatara ya LED. Kubwibyo, kumenyekanisha AC-DC ihindura hamwe nabashoferi ba DC ntabwo bitwara gusa amafaranga yinyongera (bingana na 17% byigiciro cyamatara ya LED yose), ariko kandi byongera ingufu zamashanyarazi kandi bigabanya igihe cyamatara ya LED. Kubwibyo, guteza imbere ibikoresho bya LED cyangwa electroluminescent (EL) bishobora gutwarwa bitaziguye n’amashanyarazi 110 V / 220 V ya 50 Hz / 60 Hz udakeneye ibikoresho bya elegitoroniki byinyuma byifuzwa cyane.
Mu myaka mike ishize, ibikoresho byinshi bya AC ikoreshwa na electroluminescent (AC-EL) byerekanwe. Ubusanzwe ballast ya AC ya elegitoronike igizwe nifu ya fluorescent isohora igipande cyometse hagati yuburyo bubiri (Ishusho 2a). Ikoreshwa rya insulasiyo irinda gutera inshinge zitwara ibicuruzwa hanze, kubwibyo ntamashanyarazi uhari anyura mubikoresho. Igikoresho gifite imikorere ya capacitor, kandi munsi yumushoferi wumuriro wamashanyarazi muremure wa AC, electron zakozwe imbere zirashobora gutobora kuva aho zifatiye kugeza kurwego rwohereza imyuka. Nyuma yo kubona ingufu zihagije za kinetic, electron zigongana na luminescent center, bikabyara moteri kandi bigatanga urumuri. Bitewe no kudashobora gutera electroni ziturutse hanze ya electrode, umucyo nubushobozi bwibikoresho biri hasi cyane, bigabanya imikoreshereze yabyo murwego rwo kumurika no kwerekana.
Mu rwego rwo kunoza imikorere, abantu bakoze imashini ya elegitoroniki ya AC ifite urwego rumwe (reba Ishusho yinyongera 2b). Muri ubu buryo, mugihe cyigice cyiza cyikinyabiziga cya AC, umutwara yishyurwa yinjizwa muburyo butaziguye biva muri electrode yo hanze; Imyuka ihumanya neza irashobora kugaragara muguhuza hamwe nubundi bwoko bwikwirakwizwa ryimbere imbere. Ariko, mugihe kimwe cya kabiri cyinzira ya AC Drive, abatwara inshinge zatewe bazashyirwa mubikoresho bityo ntibizasohore urumuri.Kubera ko urumuri rusohora gusa mugihe cyigice cyikinyabiziga cyo gutwara, imikorere yiki gikoresho cya AC ni munsi yibyo DC ibikoresho. Mubyongeyeho, bitewe nubushobozi bwa capacitance yibikoresho, imikorere ya electroluminescence yibikoresho byombi bya AC biterwa ninshuro, kandi imikorere myiza isanzwe igerwaho kumurongo mwinshi wa kilohertz nyinshi, bigatuma bigorana guhuza nimbaraga zisanzwe za AC murugo murugo hasi inshuro (50 hertz / 60 hertz).
Vuba aha, umuntu yasabye AC ibikoresho bya elegitoroniki bishobora gukora kuri 50 Hz / 60 Hz. Iki gikoresho kigizwe nibikoresho bibiri bisa na DC (reba Ishusho 2c). Mugukoresha amashanyarazi mugufi azenguruka electrode yo hejuru yibikoresho byombi no guhuza electrode yo hepfo ya coplanar na AC power power, ibyo bikoresho byombi birashobora guhinduranya. Uhereye ku muzunguruko, iki gikoresho cya AC-DC kiboneka muguhuza igikoresho cyimbere nigikoresho gisubira inyuma. Iyo igikoresho cyimbere gifunguye, igikoresho cyinyuma kizimya, gikora nka résistoriste. Bitewe no kuba hariho guhangana, imikorere ya electroluminescence iri hasi cyane. Byongeye kandi, ibikoresho bitanga urumuri rwa AC birashobora gukora gusa kuri voltage nkeya kandi ntibishobora guhuzwa neza na 110 V / 220 V amashanyarazi yo murugo. Nkuko bigaragara mu gishushanyo cya 3 cyongeweho nimbonerahamwe ya 1, imikorere (umucyo nubushobozi bwimbaraga) byibikoresho byavuzwe na AC-DC byamashanyarazi bitwarwa na voltage ya AC iri munsi yibyo bikoresho bya DC. Kugeza ubu, nta gikoresho cy’amashanyarazi cya AC-DC gishobora gutwarwa n’amashanyarazi yo mu rugo kuri 110 V / 220 V, 50 Hz / 60 Hz, kandi gifite imikorere myiza kandi ikaramba.
Chen Shuming hamwe nitsinda rye bo muri kaminuza yubumenyi n’ikoranabuhanga yo mu majyepfo bakoze urutonde rwahujwe na dant ya dotike itanga urumuri rwifashishije oxyde ya indium zinc ikora neza nka electrode yo hagati. Diyode irashobora gukora muburyo bwiza kandi bubi busimburana bwikurikiranya, hamwe na kwant yo hanze ya 20.09% na 21.15%. Mubyongeyeho, muguhuza ibyiciro byinshi byahujwe nibikoresho, akanama gashobora gutwarwa nimbaraga za AC zo murugo bitabaye ngombwa ko hajyaho imiyoboro yinyuma yinyuma.Mu modoka ya 220 V / 50 Hz, imbaraga zumuriro wumutuku utukura hamwe na panne yo gukina ni 15.70 lm W-1, kandi urumuri rushobora guhinduka rushobora kugera kuri 25834 cd m-2. Amacomeka yatejwe imbere kandi akinisha akadomo ka LED akadomo karashobora gutanga ubukungu, bworoshye, bukora neza, kandi butajegajega butanga urumuri rushobora gukoreshwa namashanyarazi yo murugo.
Yakuwe kuri Lightingchina.com
Igihe cyo kohereza: Mutarama-14-2025