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].
