Ob peb hnub dhau los, Lub Tsev Haujlwm Saib Xyuas Kev Lag Luam thiab Cov Ntaub Ntawv Technology ntawm Anhui Xeev, txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhim kho kev tsim khoom lag luam, thiab txhawb kev txhim kho zoo ntawm kev tsim khoom lag luam, tau tshaj tawm."Production-University-Research-Siv cov khoom los tsim kom muaj qhov tsis zoo nyob rau hauv qhov tseem ceeb ntawm kev tsim khoom thiab kev taw qhia rau tackling Key Common Technologies." Catalog (2021)". Lub" UV LED Cua Direction" pom tias qhov sib sib zog nqus ultraviolet LED yog kev tshawb fawb thiab kev lag luam ntawm cov qauv tshwj xeeb substrate thiab chip npaj tshuab.
Nws yog to taub hais tias kev tshawb fawb thiab industrialization ntawm tshwj xeeb qauv substrates thiab nti npaj technologies rau sib sib zog nqus-ultraviolet LEDs mas yog tshawb fawb ntawm nano-patterned sapphire substrates haum rau lub epitaxial loj hlob ntawm AlN thiab high-aluminium AlGaN ultraviolet LED chips los daws UVC semiconductors. Peb qhov teeb meem ntawm kev siv tshuab epitaxial, txhim kho kev ua kom tsis muaj menyuam, thiab txhim kho cov cua sov dissipation.
Nws lub hom phiaj tseem ceeb tshaj plaws yog kom paub txog kev npaj ntawm nano-patterned substrates nrog cov qauv sib txawv me me. Cov qauv tshwj xeeb: sab sauv (qis) aperture yog 700-1000 (100-300) nm, qhov tob yog 300-650nm, lub sijhawm 1- Lub microstructure ntawm 1.4μm, qhov sib xws yog tsawg dua 3-5%.
Qhov thib ob yog siv nano-scale patterned substrate kom paub tias qhov emission wavelength ntawm AlGaN quantum zoo yog qis dua 280 nm (qhov emission wavelength yog 260-280 nm), thiab cov quantum efficiency yog ntau dua 50%. Tsis tas li ntawd, nyob rau hauv kev npaj ntawm UV LED nti qauv, lub electroluminescence wavelength yog qis dua 280 nm, lub off-chip quantum efficiency yog ntau dua 3%, thiab cov zis lub teeb lub zog yog ntau tshaj 10mW." Thiab lwm yam teeb meem.
Vim nws muaj peev xwm tua tus kab mob tshiab tshiab thiab nws tus kheej qhov zoo, qhov tob ultraviolet LEDs tau nyiam ntau thiab ntau dua los ntawm tsoomfwv. Yav dhau los, Xiamen Science thiab Technology Bureau of Fujian Province tau tshaj tawm" Cov Lus Qhia rau Kev Siv Cov Kev Tshawb Fawb Txog Kev Tshawb Fawb thiab Tshuab Loj (Kev Lag Luam thiab Cov Ntaub Ntawv Technology) hauv Xiamen hauv 2021." Muaj ib yam khoom nyob rau hauv kev lag luam tshuaj uas qhia meej tso rau pem hauv ntej ntawm" tob ultraviolet luminescent cov ntaub ntawv thiab cov khoom siv."
Piv txwv li, Shanxi Xeev kuj txhawb kev txhim kho ntawm UV LEDs (nias kom paub meej). Hauv" 14th Tsib Xyoo Kev Npaj rau Cov Khoom Siv Tshiab hauv Shanxi Xeev", nws yuav tsom mus rau kev ua tiav hauv thaj tsam ntawm cov cuab yeej ntse tshawb pom xws li ultraviolet LED chips, sib sib zog nqus ultraviolet LED chips, thiab MiniLEDs. Technology, tsom mus rau kev tshawb fawb thiab kev loj hlob ntawm tag nrho-band UV LED khoom, LED epitaxy khoom, thiab UV daim ntawv thov khoom. Nyob rau tib lub sijhawm, kev nqis peev hauv kev tshawb fawb thiab kev tsim cov khoom siv sapphire loj hlob thiab MOCVD cov cuab yeej yuav nce ntxiv.
Niaj hnub no, txoj cai no hauv Anhui suav nrog ultraviolet, uas ib zaug ntxiv cov xov xwm zoo rau kev lag luam thiab tseem ceeb heev rau kev txhawb nqa UV LED txoj kev loj hlob!
