Perovskite diode itanga urumuri (perovskite LED) nigisekuru gishya cyikoranabuhanga ritanga urumuri rufite ubushobozi bukomeye bwo kwerekana, kumurika, itumanaho nizindi nzego.LEDs ya Perovskite ifite igiciro gito cyumusaruro hamwe nibyiza bya tekiniki: bifite ibiranga urumuri, ubunini no guhinduka bisa na OLEDs, kandi bifite kandi ibara risa neza kandi rihuza neza na LED ya semiconductor ya III-V.Nyuma yimyaka mike gusa yiterambere, imikorere ya perovskiteLEDiragereranywa nubuhanga bukuze bwohereza urumuri.
Imiterere y'ibikoresho bya Perovskite (hejuru ibumoso);
Imiti yimiti ya bipolar molecular stabilisateur SFB10 (hepfo ibumoso)
Isano iri hagati yigikoresho T50 ubuzima bwose nimirasire (igishushanyo cyiburyo)
Nyamara, kimwe na selile yizuba ya perovskite, ihungabana rya LEDs ya perovskite nikibazo gikomeye cyo kumenya inganda zikoreshwa.Kugeza ubu, igihe cyo gukora LEDs ikora cyane perovskite LEDs murutonde rwamasaha 10-100.Igihe cyo kubaho gisabwa kugirango tekinoroji ya OLED yinjire mu nganda nibura amasaha 10,000.Hano haribibazo bikomeye muriki cyerekezo kuko perovskite semiconductor irashobora kuba imbere idahindagurika.Nibyiza kuriLED yerekana.Imiterere yacyo ya kirisiti ifite ibintu byingenzi bya ionic, kandi ion zigenda byoroshye munsi yumuriro wamashanyarazi wakoreshejwe wa LED, bigatuma ibintu byangirika.
Vuba aha, itsinda rya Porofeseri David Di n’umushakashatsi Zhao Baodan wo muri Laboratwari ya Leta y’ibikoresho bigezweho, Ishuri rya Optoelectronics, kaminuza ya Zhejiang na
Ikigo mpuzamahanga cyubushakashatsi cya Photonics Yateye imbere, Haining International Campus, cyateye intambwe ikomeye muri iki cyerekezo.Bakoresheje bipolar molekulari stabilisateur, bagezeho igihe kirekire cyane cyo gukora muri LEDs ya perovskite yujuje ibyifuzo byingirakamaro.
David Dee yagize ati: "Izi LED za perovskite zayobowe numuyoboro uhoraho wa 5 mA / c㎡ mu mezi 5 yikurikiranya (amasaha 3600) nta mucyo wagabanutse."LED imyumvire.KuriP1.56LED yerekana.Ibi bikoresho birahagaze neza, kandi ibizamini bimwe na bimwe bikiri mubikorwa bigaragara ko bigoye kurangiza mugihe cyumwaka cyangwa urenga.Kugirango tubone amakuru y'ubuzima bwose mugihe cyagenwe gikwiye, hagomba gukorwa ubushakashatsi bwihuse bwa LED. ”
Izi LED hafi ya infragre perovskite LED irerekana ultra-ndende ikora ubuzima.Kurugero, hamwe nimirasire yambere ya 2.1 W sr-1 m-2 (ikigezweho cya 3.2 mA / c㎡), igikoresho cyagereranijwe T50 ubuzima bwose (igihe bifata kugirango imirasire yambere igabanuke kugera kuri 50%) ni amasaha 32675 ( Umwaka 3.7).Imbaraga za optique zitangwa niyi mirasire iragereranywa nubucuruzi bwicyatsi kibisi OLED ikorera kumurabyo mwinshi wa 1000 cd / m2.Ku mucyo wo hasi wa 0.21 W sr-1 m-2 (1/10 cyumucyo wavuzwe haruguru) cyangwa umuyoboro wa 0.7 mAc㎡, ubuzima bwa T50 bugereranywa namasaha miliyoni 2.4 (hafi imyaka 270).
"Turizera ko ari ngombwa gukora isesengura ryizewe ry'ubuzima kuri iyi LED nshya, aho twakusanyije amanota 62 y'ibikoresho by'ubuzima mu bushakashatsi bwihuse bwo gusaza, bikubiyemo ubwinshi bwagutse buri hagati ya 10-200 mA / c㎡."Guo Bingbing ati.Electroluminescence ikora neza ya kwant (EQE) hamwe ningufu zo guhindura ingufu (ECE) igikoresho cyageze kuri 22.8% na 20.7%, ibyo bikaba aribyo byiza cyane bya LED hafi ya infragre ya perovskite LED.
Abanditsi basanze ibyo bikoresho bya perovskite luminescent bifite imiterere ihamye ya kristu.Zhao Baodan ati: "Imiterere ya kristu y'ibikoresho ntabwo yahindutse nyuma y'iminsi irenga 322."
Kumara igihe kinini ukora kandi byihuse byo gusaza kwa perovskite LEDs (ishusho ibumoso);
Imibare yo hanze ikora neza yo kugenzura hamwe nibikoresho bihamye (panel iburyo)
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Kwimuka kwa Ion muri perovskites nikimwe mubintu byingenzi biganisha ku guhungabana, kandi iki kibazo kirakomera cyane bitewe n’umuvuduko ukoreshwa na LED naMini LED yerekana.Guo Bingbing yagize ati: "Ubushakashatsi bwacu no kubara byerekana ko molekile ya bipolar ituma habaho imiti ihuza imiti cyangwa imikoranire na ion ku mbibi z’ingano za perovskite, ibyo bikaba bishobora kuba impamvu ituma kwimuka kwa ion bigora muri perovskite." Ubushakashatsi bw’amashanyarazi na optique twakoze. Hanze Baodan yongeyeho ati: "Hamwe n'abafatanyabikorwa bacu bagaragaje ko bahagaritse icyerekezo cya ion."
Ibisubizo byubuzima bwibikoresho byerekana ko ibikoresho bya perovskite bidafite "inenge ya genetike" mubijyanye no gutuza.David Dee yagize ati: "Imiyoboro mishya, nk'icyuma cya halide perovskite, abantu benshi bafatwa nk'imiterere idahungabana, cyane cyane ku mashanyarazi arenze urugero nko mu bikorwa bya LED"."Ibisubizo byacu byerekana ko kugera ku bikoresho bihamye bya perovskite atari 'ubutumwa budashoboka'".
Ibikoresho birebire cyane byigihe kirekire byitezweko bizamura icyizere mumurima wa perovskite LED, kuko yujuje ibyangombwa byibanze byumutekano kuri OLEDs yubucuruzi.Izi LED hafi-ya-infragre irashobora gukoreshwa mubisabwa nka hafi-ya-infragre yerekana, itumanaho, na biologiya.Nubwo ibikoresho-bigaragara-byoroheje bya perovskite hamwe nigihe kirekire cyo kubaho biracyakomeza gutezwa imbere, kumenyekanisha LED-ultra-stabilite perovskite LED itanga inzira ya tekinoroji ya perovskite luminescence yinjira mubikorwa byinganda.
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Kwitegereza ingaruka zo kwimuka kwa ion za perovskite munsi yumuriro wamashanyarazi na microfluorescence yerekana amashusho
Igihe cyo kohereza: Kanama-24-2022