Nhanganyaya: Chen Shuming nevamwe vanobva kuSouthern University of Science and Technology vakagadzira nhevedzano yakabatana quantum dot light-emitting diode vachishandisa transparent conductive indium zinc oxide seyepakati electrode. Iyo diode inogona kushanda pasi pezvakanaka uye zvisina kunaka kuchinjana kwemazuva ano, nekunze quantum efficiencies ye20.09% uye 21.15%, zvichiteerana. Uye zvakare, nekubatanidza akawanda akatevedzana akabatana zvishandiso, iyo pani inogona kufambiswa zvakananga neimba AC simba pasina kudiwa kweakaoma backend maseketi. Pasi pekutyaira kwe220 V/50 Hz, simba repugi dzvuku uye play panel ndeye 15.70 lm W-1, uye kupenya kunogadziriswa kunogona kusvika ku25834 cd m-2.
Light emitting diodes (LEDs) dzave tekinoroji yekuvhenekesa mwenje nekuda kwekushanda kwazvo, hupenyu hurefu, yakasimba-nyika uye kuchengetedzwa kwezvakatipoteredza zvakanakira, kusangana nepasi rose kudiwa kwesimba uye kuchengetedza kwezvakatipoteredza. Semiconductor pn diode, LED inogona kushanda chete pasi pekutyaira kweiyo yakaderera-voltage yakananga ikozvino (DC) sosi. Nekuda kweiyo unidirectional uye inoenderera mberi yekuchaja jekiseni, machaji uye Joule yekudziya inoungana mukati memudziyo, nekudaro ichidzikisa kugadzikana kwekushanda kwe LED. Mukuwedzera, magetsi epasi rose anonyanya kuenderana ne-high-voltage alternating current, uye midziyo yakawanda yemumba yakadai semwenje ye LED haigoni kushandisa zvakananga high-voltage alternating current. Naizvozvo, kana LED ichifambiswa nemagetsi epamba, imwe yekuwedzera AC-DC inoshandura inodiwa semurevereri kushandura yakakwira-voltage AC simba kuita yakaderera-voltage DC simba. Yakajairwa AC-DC inoshandura inosanganisira transformer yekudzikisa mains voltage uye rectifier dunhu rekugadzirisa iyo AC yekuisa (ona Mufananidzo 1a). Kunyangwe kushandurwa kwakanaka kwevazhinji vanoshandura AC-DC vanogona kusvika pamusoro pe90%, kuchine kurasikirwa kwesimba panguva yekutendeuka. Mukuwedzera, kugadzirisa kupenya kwe LED, nzvimbo yakatsaurirwa yekufambisa inofanira kushandiswa kugadzirisa magetsi emagetsi eDDC uye kupa iyo yakakodzera ikozvino ye LED (ona Supplementary Figure 1b).
Kuvimbika kwemutyairi wedunhu kuchakanganisa kusimba kwemwenje we LED. Naizvozvo, kuunza AC-DC converters uye DC madhiraivha kwete chete kuunza imwe mari yekuwedzera (accounting inosvika 17% yemutengo wemarambi e LED), asiwo inowedzera kushandiswa kwemagetsi uye inoderedza kusimba kwemarambi e LED. Naizvozvo, kugadzira LED kana electroluminescent (EL) zvishandiso zvinogona kufambiswa zvakananga nemhuri 110 V/220 V voltages e50 Hz/60 Hz pasina kudiwa kwezvakaoma backend midziyo yemagetsi inodiwa zvikuru.
Mumakumi mashoma emakore apfuura, akati wandei AC inofambiswa electroluminescent (AC-EL) zvishandiso zvakaratidzwa. Iyo yakajairika AC yemagetsi ballast ine fluorescent poda emitting layer yakaiswa pakati pematanho maviri anodzivirira (Mufananidzo 2a). Iko kushandiswa kweiyo insulation layer inodzivirira jekiseni yekunze inotakura vatakuri, saka hapana yakananga ikozvino inoyerera nemuchina. Chishandiso chine basa recapacitor, uye pasi pekutyaira kwenzvimbo yakakwira AC yemagetsi, maerekitironi anogadzirwa mukati anogona tunnel kubva pakubata kusvika kune emission layer. Mushure mekuwana simba rekinetic rakakwana, maerekitironi anodhumhana nepakati pe luminescent, achigadzira excitons uye kubudisa chiedza. Nekuda kwekutadza kubaya maerekitironi kubva kunze kwemagetsi, kupenya uye kugona kwezvishandiso izvi zvakaderera zvakanyanya, izvo zvinoganhurira mashandisiro azvo muminda yekuvhenekesa uye kuratidza.
Kuti ivandudze kushanda kwayo, vanhu vakagadzira AC electronic ballasts ine imwechete insulation layer (ona Supplementary Figure 2b). Muchigadziro ichi, panguva yehafu yakanaka ye AC drive, mutakuri wechaji anoiswa zvakananga mukati meiyo emission layer kubva kune ekunze electrode; Kubuda kwemwenje kunoshanda kunogona kucherechedzwa nekubatanidzwazve neimwe mhando yekuchaja inotakura inogadzirwa mukati. Zvisinei, panguva yakaipa hafu yekutenderera ye AC drive, injected charge carriers ichasunungurwa kubva pamudziyo uye naizvozvo haizobudisi chiedza.Nekuda kwekuti chiedza chinobuda chinongoitika panguva yehafu yekufambisa, kushanda kweiyo AC device. yakaderera pane iyo yemidziyo yeDC. Pamusoro pezvo, nekuda kwehunyanzvi hwekugona kwemidziyo, kuita kwe electroluminescence yezvese zviri zviviri AC zvishandiso kunoenderana ne frequency, uye kuita kwakakwana kunowanzo kuwanikwa pakakwirira mafrequency e akati wandei kilohertz, izvo zvinoita kuti zviome kuenderana neyakajairwa imba AC simba pakadzika. frequencies (50 hertz/60 hertz).
Munguva pfupi yapfuura, mumwe munhu akaronga mudziyo wemagetsi weAC unogona kushanda pamafrequency e50 Hz/60 Hz. Mudziyo uyu une maviri anoenderana DC midziyo (ona Mufananidzo 2c). Nemagetsi mapfupi ekutenderera maelectrodes epamusoro emidziyo miviri iyi uye nekubatanidza maelectrode epazasi ecoplanar kune AC magetsi sosi, midziyo miviri iyi inogona kubatidzwa neimwe nzira. Kubva pakuona kwedunhu, iyi AC-DC mudziyo unowanikwa nekubatanidza mudziyo wekumberi uye reverse mudziyo munhevedzano. Kana iyo yekumberi yakavhurwa, iyo yekumashure inodzimwa, ichiita seanopikisa. Nekuda kwekuvapo kwekupokana, iyo electroluminescence inoshanda yakaderera. Pamusoro pezvo, AC light-emitting zvishandiso zvinongoshanda pa low voltage uye hazvigone kusanganiswa zvakananga ne 110 V/220 V yakajairwa magetsi emumba. Sezvinoratidzwa muSupplementary Figure. Kusvika pari zvino, hapana AC-DC simba mudziyo unogona kufambiswa zvakananga nemagetsi emumba pa110 V/220 V, 50 Hz/60 Hz, uye ine hunyanzvi hwepamusoro uye hupenyu hurefu.
Chen Shuming nechikwata chake kubva kuSouthern University of Science and Technology vakagadzira nhevedzano yakabatana quantum dot light-emitting diode vachishandisa transparent conductive indium zinc oxide seyepakati electrode. Iyo diode inogona kushanda pasi pezvakanaka uye zvisina kunaka kuchinjana kwemazuva ano, nekunze quantum efficiencies ye20.09% uye 21.15%, zvichiteerana. Uye zvakare, nekubatanidza akawanda akatevedzana akabatana michina, iyo mapaneru anogona kufambiswa zvakananga neimba AC simba pasina kudiwa kweakaoma backend maseketi.Pasi pedhiraivha ye220 V/50 Hz, kushanda kwesimba kweiyo dzvuku plug uye play panel ndeye 15.70 lm W-1, uye kupenya kunogadziriswa kunogona kusvika ku25834 cd m-2. Iyo yakagadziridzwa plug uye yekutamba quantum dot LED pani inogona kuburitsa ehupfumi, compact, inoshanda, uye yakagadzikana yakasimba-nyika mwenje masosi anogona kufambiswa zvakananga neimba AC magetsi.
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Nguva yekutumira: Jan-14-2025