Perovskite light-emitting diode (perovskite LED) ke moloko o mocha oa theknoloji e hlahisang leseli e nang le bokhoni bo boholo ba ho bonts'a, mabone, puisano le likarolo tse ling.Li-LED tsa Perovskite li na le litšenyehelo tse tlase tsa tlhahiso le melemo ea bohlokoa ea tekheniki: li na le litšobotsi tsa bobebe, tšesaane le ho feto-fetoha ha maemo ho ts'oana le li-OLED, hape li na le bohloeki ba mebala e ts'oanang le spectral tunability ho li-LED tsa semiconductor tsa III-V.Ka mor'a lilemo tse 'maloa feela tsa tsoelo-pele, katleho ea perovskiteLi-LEDe bapisoa le ea theknoloji e hōlileng tsebong ea ho ntša khanya.
Sebopeho sa lisebelisoa tsa LED tsa Perovskite (ka holimo ka ho le letšehali);
Foromo ea lik'hemik'hale ea bipolar molecular stabilizer SFB10 (ka tlaase ka ho le letšehali)
Kamano lipakeng tsa sesebelisoa sa T50 bophelo bohle le khanya (kerafo e nepahetseng)
Leha ho le joalo, ho tšoana le lisele tsa letsatsi tsa perovskite, ho se tsitse ha li-LED tsa perovskite ke phephetso e kholo ka ho fetisisa ea ho phethahatsa likopo tsa indasteri.Hona joale, nako ea bophelo ea li-LED tsa perovskite tse nang le ts'ebetso e phahameng ka kakaretso e le ka taelo ea lihora tse 10-100.Nako ea bophelo e hlokahalang bakeng sa theknoloji ea OLED ho kena indastering ke bonyane lihora tse 10,000.Ho na le mathata a bohlokoa ntlheng ena hobane li-semiconductors tsa perovskite li ka ba tse sa tsitsang.E ntle bakeng saPontšo ea LED.Sebopeho sa eona sa kristale se na le thepa ea bohlokoa ea ionic, 'me li-ion li tsamaea habonolo tlas'a tšimo ea motlakase e sebelisoang ea LED, e leng se etsang hore thepa e fokotsehe.
Haufinyane tjena, sehlopha sa Moprofesa David Di le mofuputsi Zhao Baodan ho tsoa State Key Laboratory ea Modern Optical Instruments, School of Optoelectronics, Zhejiang University le the
Setsi sa Machaba sa Lipatlisiso sa Advanced Photonics, Khamphaseng ea Machaba ea Haining, se entse likhatelopele tsa bohlokoa ntlheng ena.Ba sebelisa bipolar molecular stabilizer, ba fihletse nako e telele ea ho sebetsa ka li-LED tsa perovskite tse finyellang litlhoko tsa likopo tse sebetsang.
"Li-LED tsena tsa perovskite li ne li khannoa ke nako e sa khaotseng ea 5 mA / c㎡ bakeng sa likhoeli tse 5 tse latellanang (lihora tsa 3600) ho se na ho theoha ha khanya," ho boletse David Dee.Tlhaloso ea LED.Bakeng saP1.56Pontšo ea LED.Lisebelisoa tsena li tsitsitse haholo, 'me liteko tse ling tse ntseng li tsoela pele ho bonahala ho le thata ho li qeta nakong ea selemo kapa ho feta.Bakeng sa ho fumana lintlha tsa bophelo bohle nakong ea liteko, liteko tsa botsofali tse potlakileng tsa LED li hloka ho etsoa. ”
Li-LED tsena tse haufi le infrared perovskite li bonts'a nako e telele ea ho sebetsa.Mohlala, ka khanya ea pele ea 2.1 W sr-1 m-2 (hona joale ke 3.2 mA/c㎡), sesebelisoa se hakantsoeng sa T50 bophelo bohle (nako eo ho e nkang hore khanya ea pele e theohele ho 50%) ke lihora tse 32675 ( 3.7 lilemo).Matla a optical a fanoang ke khanya ena a bapisoa le OLED e tala ea khoebo e sebetsang ka khanya e phahameng ea 1000 cd/m2.Ka mahlaseli a tlase a 0.21 W sr-1 m-2 (1/10 ea khanya e kaholimo) kapa ea hajoale ea 0.7 mAc㎡, nako ea bophelo ea T50 e hakanngoa e le lihora tse limilione tse 2.4 (lilemo tse ka bang 270).
"Re lumela hore hoa hlokahala ho etsa tlhahlobo e tšepahalang ea bophelo bohle ba LED ena e ncha, eo re bokelletseng lintlha tse 62 tsa lisebelisoa tsa bophelo bohle litekong tse potlakileng tsa botsofali, tse koahelang boholo bo pharaletseng ba 10-200 mA/c㎡."Guo Bingbing o boletse.The electroluminescence external quantum performance (EQE) le matla a ho fetola matla (ECE) ea sesebelisoa e fihlile ho 22,8% le 20,7%, ka ho latellana, e leng matla a phahameng ka ho fetisisa a li-LED tsa perovskite tse haufi le infrared.
Bangoli ba fumane hore lisebelisoa tsena tsa luminescent tsa perovskite li na le mehaho ea kristale e tsitsitseng haholo."Sebopeho sa kristale sa thepa ha se e-s'o fetohe ka mor'a matsatsi a fetang 322," ho boletse Zhao Baodan.
Liteko tsa nako e telele tsa ho sebetsa le ho potlakisa botsofali ba li-LED tsa perovskite (setšoantšo se letšehali);
Lintlha tsa kantle tsa quantum tsa taolo le lisebelisoa tse tsitsitseng (phanele e nepahetseng)
"Sena se bontša hore bipolar molecular stabilizer e thusa perovskite ho boloka karolo ea eona ea pele ea kristale e nang le thepa e babatsehang ea optoelectronic. Sebopeho sa kristale sa li-sampuli tsa perovskite tse laoloang li ile tsa fetoha haholo 'me tsa senyeha ka hare ho libeke tse peli. "
Ho falla ha Ion ho li-perovskites ke e 'ngoe ea lintlha tsa bohlokoa tse lebisang ho se tsitseng,' me bothata bona bo fetoha bo tebileng haholoanyane tlas'a tšusumetso ea matla a sebelisoang ho LED lePontšo e nyane ea LED."Liteko le lipalo tsa rona li bontša hore limolek'hule tsa bipolar li theha likamano tsa lik'hemik'hale kapa litšebelisano le li-ion meeding ea lijo-thollo tsa perovskite," ho boletse Guo Bingbing, "e ka 'nang ea e-ba lebaka leo ka lona ho falla ha ion ho bang thata ho li-perovskites tsa rona. "Liteko tsa motlakase le tsa optical tseo re li entseng ho tsoa le basebetsi-'moho le rona re bonts'itse khatello ea ts'ebetso ea ion," a eketsa Zhao Baodan.
Liphetho tsa bophelo ba lisebelisoa li bontša hore lisebelisoa tsa perovskite ha li na "liphatsa tsa lefutso" mabapi le botsitso."Li-semiconductors tse ncha, tse kang metal halide perovskites, li nkoa e le tse sa tsitsang ka tlhaho, haholo-holo masimong a motlakase a batlang a le holimo, joalo ka lits'ebetsong tsa LED," ho boletse David Dee."Liphetho tsa rona li bontša hore ho finyella lisebelisoa tse tsitsitseng tsa perovskite ha se 'timo e ke keng ea khoneha'".
Nako ea nako e telele ea lisebelisoa e lebeletsoe ho matlafatsa kholiseho tšimong ea LED ea perovskite, kaha e phethile tlhokahalo ea motheo ea botsitso bakeng sa OLED ea khoebo.Li-LED tsena tse haufi le infrared li ka sebelisoa lits'ebetsong tse joalo ka lipontšo tse haufi le infrared, likhokahano le baeloji.Le hoja lisebelisoa tse bonahalang tsa perovskite tse nang le nako e telele ea bophelo li ntse li lokela ho ntlafatsoa, ho phethahala ha li-LED tsa perovskite tse tsitsitseng haholo ho bula tsela ea theknoloji ea perovskite luminescence ho kena lits'ebetsong tsa indasteri.
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Tlhokomelo ea phello ea ho falla ha ion ea perovskite tlas'a tšimo ea motlakase ka teko ea litšoantšo ea microfluorescence
Nako ea poso: Aug-24-2022