Raws li cov ntaub ntawv tsis ntev los no los ntawm South Kauslim xov xwm, Kaus Lim Kauslim Photonics Technology Institute (KOPTI) tau tshaj tawm txoj kev vam meej ntawm kev ua tau zoo thiab zoo Micro LED thev naus laus zis.Internal quantum efficiency ntawm Micro LED tuaj yeem khaws cia nyob rau hauv thaj tsam ntawm 90%, tsis hais lub nti loj lossis qhov sib txawv ntawm qhov sib txawv tam sim no.

20μm Micro LED tam sim no-voltage nkhaus thiab emission duab (duab credit: KOPTI)

Lub tshuab Micro LED no tau sib koom ua ke los ntawm Dr. Jong hyup Baek pab neeg los ntawm Optical Semiconductor Display Department, ZOGAN Semi pab pawg coj los ntawm Dr. Woong ryeol Ryu, thiab xibfwb Jong hauv Shim los ntawm Department of Nano-Optoelectronics ntawm Hanyang University.Cov khoom lag luam hais txog qhov teeb meem ntawm kev txo qis ntawm lub teeb emission efficiency hauv Micro LEDs vim qhov shrinking nti qhov ntau thiab tsawg thiab muaj zog txhaj tshuaj tam sim no.

Nws tau pom tias Micro LEDs qis dua 20μm hauv qhov loj me tsis tsuas yog muaj kev txo qis hauv lub teeb emission efficiency tab sis kuj tseem muaj qhov tsis zoo ntawm cov hluav taws xob sib txuas ua ke hauv qhov tsis tshua muaj tam sim no (0.01A / cm² txog 1A / cm²) xav tau rau kev tsav tsheb tso saib vaj huam sib luag. .Tam sim no, kev lag luam ib nrab txo qhov teeb meem no los ntawm cov txheej txheem passivation ntawm lub nti sab, tab sis nws tsis tau daws qhov teeb meem.

Internal quantum efficiency (IQE) ntawm 20μm thiab 10μm xiav Micro LED sib txawv raws li qhov ceev tam sim no

KOPTI piav qhia tias pab pawg tshawb fawb tau txo qis cov kab mob hauv cov txheej txheem epitaxial thiab txhim kho lub teeb emission efficiency los ntawm kev siv cov qauv tshiab.Cov qauv tshiab no txwv tsis pub lub cev kev ntxhov siab hloov pauv ntawm Micro LED nyob rau hauv ib qho chaw hluav taws xob sab nraud lossis cov qauv.Raws li qhov tshwm sim, txawm tias me me Micro LED loj, cov qauv tshiab no txo ​​qis qhov tsis muaj hluav taws xob rov ua dua qhov poob thaum tuav lub teeb pom kev zoo uas tsis tas yuav muaj cov txheej txheem passivation.

Pab neeg no tau ua tiav cov ntaub ntawv siv tau zoo thiab zoo Micro LED thev naus laus zis hauv xiav, gallium nitride ntsuab, thiab cov khoom siv liab.Nyob rau hauv lub neej yav tom ntej, cov thev naus laus zis no tuav lub peev xwm los tsim cov xim puv xim gallium nitride Micro LED zaub.