2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Photoluminescence yog cov txheej txheem tseem ceeb rau kev ntsuas qhov purity thiab crystalline zoo ntawm semiconductors xws li GaN thiab InPthiab kom muaj nuj nqis ntawm qhov teeb meem tam sim no hauv lub cev.
YYuav siv cov photoluminescence yog dab tsi?
13.3.
Photoluminescence (fluorescence) spectroscopy yog ib txoj kev tsis sib cuag thiab tsis muaj kev puas tsuaj los soj ntsuam cov qauv hluav taws xob ntawm cov ntaub ntawv. Thaum lub teeb poob rau ntawm tus qauv, nws yog absorbed thiab imparts ntau zog rau cov khoom nyob rau hauv ib tug txheej txheem hu ua photoexcitation.
Cov ntaub ntawv dab tsi tuaj yeem muab rho tawm los ntawm photoluminescence spectroscopy?
Photoluminescence (PL) yog qhov tshwm sim tshwm sim ntawm lub teeb los ntawm cov khoom siv tom qab kho qhov muag. Nws yog cov txheej txheem muaj zog los soj ntsuam cov qib sib txawv ntawm lub zog thiab muab cov ntaub ntawv tseem ceeb ntawm semiconductor qauv muaj pes tsawg leeg, quantum zoo tuab lossis quantum dot qauv monodispersity.
Photoluminescence nrog piv txwv yog dab tsi?
Photoluminescence - Qhov no yog txheej txheem uas cov tshuaj nqus cov photons thiab rov tso tawm lawv. Lub zog electromagnetic yog absorbed ntawm ib lub wavelength thiab emissions ntawm ib tug sib txawv wavelength uas yog feem ntau ntev.
Leej twg invented photoluminescence?
diodes (LEDs). Lo lus luminescence yog thawj zaug siv los ntawm German physicist, Eilhardt Wiedemann, hauv 1888 [13].
Pom zoo:
Puas pom qhov tseem ceeb yog vim li cas lossis vim li cas ho tsis?
Kev sib txuas lus pom kev pab cov neeg tuaj saib nkag siab cov ntaub ntawv. Nws ua rau kom nkag siab txog cov ntsiab lus. Hom duab ob sab uas pab kev sib txuas lus muaj xws li kos duab, kos duab kos duab, animation, kos npe, typography, graphic designs, thiab lwm yam.
Vim li cas txoj kev tseem ceeb tseem ceeb rau kev tswj xyuas qhov project?
txoj kev tseem ceeb tso cai rau pab pawg txheeb xyuas cov haujlwm tseem ceeb tshaj plaws hauv qhov project. … Qhov no muab kev nkag siab ntau dua rau koj qhov project ncua sij hawm thiab kev sib raug zoo ntawm cov haujlwm, ua rau koj nkag siab ntau ntxiv txog lub sijhawm ua haujlwm twg koj tuaj yeem hloov kho, thiab qhov twg yuav tsum nyob ib yam.
Vim li cas lub ntsiab lus tseem ceeb yog qhov tseem ceeb?
Grand mean centering sub lub ntsiab lus loj ntawm tus kwv yees siv qhov txhais los ntawm tag nrho cov qauv (X).. Vim li cas Grand txhais tau tias qhov chaw tseem ceeb? Lub ntsiab lus tseem ceeb yog qhov siv tau rov ntsuas duauas pab nrog kev txhais cov ntsiab lus cuam tshuam nrog kev cuam tshuam, nws txhais tau li cas, lossis qhov sib txawv ntawm txhua qib;
Dab tsi yog qhov tseem ceeb thiab vim li cas nws tseem ceeb los txheeb xyuas koj qhov tseem ceeb?
Qhov tseem ceeb yuav coj koj hauv kev txiav txim siab hauv lub neej thiab ua rau koj taug qab. Qhov tseem ceeb tshaj plaws, qhov tseem ceeb tshaj plaws yuav ua rau koj ntseeg siab hais tias "tsis yog." Lawv pab koj txheeb xyuas qhov xav tau tiag tiag hauv koj lub neej, piv rau lwm tus xav tias tseem ceeb.
Vim li cas qhov tseem ceeb ntawm qhov muaj zog thiab qhov tsis muaj zog yog qhov tseem ceeb?
Nws yog ib qho tseem ceeb rau qhov tseem ceeb ntawm qhov ua tau zoo thiab qhov tsis muaj zog vim qhov no pab lub tuam txhab txiav txim siab txog thaj chaw uas lawv yuav tsum tau txhim kho ntxiv rau thaj chaw uas lawv ua tau zoo hauv. Vim li cas lub zog thiab qhov tsis muaj zog tseem ceeb?
