Hamwe niterambere ryerekanwa rya LED, tekinoroji ninshi hamwe nogukoresha LED yerekanwe.
Hano ndashaka kuvuga tekinolojiya mishya yaLED yerekana.Turashobora kwiga inzira ya LED yerekanwe muri tekinoroji nshya.Ibi bizadufasha gufata ibyemezo byiza.
Iterambere rikomeye ryakozwe mubijyanye n'uburambe bugufi bwa OLED ubushakashatsi
Ku ya 14 Ukwakira, Nature Photonics yasohoye kumurongo ibyagezweho nitsinda rya Professor Yang Chuluo wo muri kaminuza ya Shenzhen mubushakashatsi bwa OLED.
Ibikoresho bikoreshwa na Thermally Delayed Fluorescence (TADF) byahindutse ahantu h’ubushakashatsi mu bikoresho bitanga urumuri rwa diode (OLED) ibikoresho bitanga urumuri mu myaka icumi ishize kubera ubushobozi bwabo bwo kugera ku nyigisho 100% yo mu rwego rwo hejuru.Mu myaka yashize, ibikoresho byinshi bya rezonanse ikora itinze ya fluorescence (MR-TADF) ifite ubushobozi bukomeye bwo gukoresha mubisobanuro bihanitse cyane bitewe nibiranga imyuka ihumanya ikirere.
Nyamara, igipimo cyo gusimbuka hagati ya sisitemu (kRISC) yibikoresho byinshi bya resonance ya TADF muri rusange biratinda, bigatuma habaho kwiyongera gukabije kwimikorere yibikoresho bitanga urumuri rwinshi cyane, bigatuma bigora ibikoresho bikwiranye na OLED kugira imikorere yombi ihanitse. n'ibara ryinshi.na buke-buke.Mu rwego rwo gukemura ikibazo cy’ibanze cyo gutangiza neza imikorere, itsinda rya Porofeseri Yang Chuluo wo muri kaminuza ya Shenzhen ryinjije BNSeSe mu gushyiramo ibintu byinshi bitaremereye bya seleniyumu ya seleniyumu mu buryo butandukanye, kandi bifashisha ingufu za atome ziremereye mu kuzamura ubumwe. hagati ya kimwe na bitatu (S1 na T1) izenguruka ryibikoresho., bivamo kRISC ndende cyane (2.0 ×106 s-1) hamwe na fotoluminescence ikora neza (100%).
Imikorere ya kwant yo hanze yububiko bwa OLED yashizwemo imyuka yateguwe ukoresheje BNSeSe nkibikoresho byabashyitsi byurwego rutanga urumuri ruri hejuru ya 36.8%, kandi imikorere yarwo irahagarikwa neza.Imikorere ya kwant yo hanze iracyari hejuru ya 21.9% kuri m-² umucyo, ugereranije nibikoresho bya fosifore nka iridium na platine.Mubyongeyeho, kunshuro yambere, bahimbye ibikoresho bya superfluorescent OLED bakoresheje ibikoresho byinshi bya resonance yo mu bwoko bwa TADF nkibikoresho.Ibikoresho bya LED bisobanutse.Igikoresho gifite ubushobozi ntarengwa bwo hanze bwa 40.5% hamwe na kwant yo hanze ya 32.4% kuri 1000 cd m-² umucyo.Ndetse kuri 10,000 cd m-² umucyo, ubushobozi bwa kwant bwo hanze buracyari hejuru ya 23.3%, ingufu ntarengwa zirenga 200 lm W-1, kandi umucyo mwinshi uri hafi 200.000 cd m-².
Aka kazi gatanga igitekerezo gishya hamwe nuburyo bwiza bwo gukemura ikibazo cyimikorere yibikoresho bya MR-TADF ibikoresho bya electroluminescent, bifite ibyifuzo byiza byo gusaba mubisobanuro bihanitse.Ibisubizo bifitanye isano byatangajwe mu kinyamakuru kizwi cyane ku isi cyitwa Nature Photonics ku mutwe wa "Efficient selenium-ihuriweho na TADF OLEDs yagabanutse kugabanuka" ("Kamere Photonics", ingaruka 39.728, Akarere ka JCR Akarere ka 1 k'Ishuri Rikuru ry'Ubushinwa, urutonde ubanza murwego rwa optique).
USTC yateye intambwe igaragara mubijyanye na perovskite LED hamwe nubushakashatsi bwibikoresho bitanga urumuri
Ibikoresho bya Perovskite bifite ibyifuzo byingenzi byo gukoresha mubice byizuba, LED, hamwe na fotodetekeri kubera ibyiza bya optoelectronic.Ubwiza bwa firime hamwe na microstructure ya firime ya perovskite igira uruhare runini mugukora ibikoresho bya optoelectronic.Nanostructure yakozwe hejuru ya perovskite yongerera ikwirakwizwa rya fotone hejuru ya firime yoroheje, igera ku ntera ishimishije mu mikorere y’ibikoresho bya LED bya perovskite.Ibisubizo bifitanye isano byasohotse mubikoresho bigezweho byiswe "Kurenga Imipaka ntarengwa ya Perovskite Diode itanga urumuri hamwe na Nanostructures zakozwe".
LEDs ya Perovskite ifite ibyiza byo guhinduranya imyuka ihumanya ikirere, imyuka ihumanya igice cya kabiri cy'ubugari, no gutegura byoroshye.Ibikoresho bya LED ya perovskite kuri ubu bigarukira cyane cyane kubikorwa byo gukuramo urumuri.Kubwibyo, kongera urumuri rwo gukuramo ibikoresho nigikoresho cyingenzi cyubushakashatsi.MuriLED kama na LED ya LED, ibice byongewe kumucyo bisabwa mubisanzwe kugirango hongerwe gukuramo fotone, nko gukoresha lens ya array-eye lens, biomimetic moth-eye nanostructures, hamwe na reaction-nke-yerekana-guhuza ibice.Nyamara, ubu buryo butuma ibikoresho byo guhimba ibikoresho bigorana kandi byongera igiciro cyo gukora.
Itsinda ry’ubushakashatsi bwa Xiao Zhengguo ryatangaje uburyo bushobora guhita bukora imiterere yimiterere hejuru ya firime yoroheje ya perovskite,no kunoza urumuriimikorere ya perovskite
LED mukongera foton ikwirakwira hejuru ya firime yoroheje.Mugihe cyo gutegura firime, mugucunga igihe cyo gutura anti-solvent hejuru ya firime, inzira yo gutegera ya perovskite irashobora kugenzurwa, bikavamo ubuso bwanditse.Kuri firime zifite impuzandengo yuburebure bwa 1.5 mm, uburinganire bwubuso burashobora kugenzurwa kuva kuri 15.3 nm kugeza kuri 241 nm, naho igihu kikaba cyiyongereye kiva kuri 6% kigera kuri 90%.
Inyungu zatewe no kwiyongera kwa foton ikwirakwira hejuru ya firime, imikorere yo gukuramo urumuri rwa perovskite LEDs ifite imiterere yimiterere yavuye kuri 11.7% igera kuri 26.5% ya LED ya planar perovskite, hamwe nibikoresho bikwiranye naLEDsnayo yariyongereye kuva 10%.% yiyongereye cyane kugera kuri 20.5%.Ibikorwa byavuzwe haruguru bitanga uburyo bushya bwo guhimba urumuri rukuramo nanostructures kubikoresho bya perovskite optoelectronic.Filime ya perovskite ifite imiterere ya micro-nano isa na morphologie yimiterere muri selile yizuba ya silisiki ya silicon, biteganijwe ko izamura imikorere yumucyo no gukora kwizuba rya perovskite.
Igihe cyo kohereza: Ugushyingo-07-2022