Photoluminescence yog lub teeb emission ntawm txhua yam teeb meem tom qab nqus ntawm photons. Nws yog ib qho ntawm ntau hom luminescence thiab yog pib los ntawm photoexcitation, li no cov duab prefix-. Tom qab excitation, ntau yam txheej txheem so feem ntau tshwm sim nyob rau hauv uas lwm cov photons tau re-radiated.
Koj txhais li cas los ntawm photoluminescence?
Photoluminescence yog txheej txheem uas cov molecule absorbs photon hauv thaj av pom, zoo siab ib qho ntawm nws cov electrons mus rau lub zog hluav taws xob siab dua, thiab tom qab ntawd radiates photon raws li qhov electron rov qab mus rau lub xeev qis zog.
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.
Vim li cas thiaj siv photoluminescence?
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.
Leej twg invented photoluminescence?
diodes (LEDs). Lo lus luminescence yog thawj zaug siv los ntawm German physicist, Eilhardt Wiedemann, hauv 1888 [13].
