Teeb pom kev zoo ntawm cov qauv siv technology
LED yog lus Askiv abbreviation ntawm lub teeb emitting diode, namely: teeb excitation diode, teej tug mus rau ib hom ntawm semiconductor tivthaiv. Cov tub ntxhais ntawm ib lub teeb-emitting diode yog ib hom w-p-type thiab n-type semiconductors. Nyob nruab nrab ntawm hom p-type thiab n-type semiconductors muaj ib txheej kab hu ua pn junction. Hauv qee cov PN cov ntaub ntawv ntawm cov khoom siv rau cov khoom siv, cov neeg muaj koob muaj npe tsawg, nrog coob tus neeg tsav tsheb, tso tawm ntau dua li lub teeb ci, hloov cov hluav taws xob ncaj qha mus rau lub teeb zog. PN hlaub nrog rau qhov rov qab muaj hluav taws xob, ib pawg neeg tsawg ntawm cov khoom nqa tsis yooj yim hno, nws tsis pom kev. Kev siv txoj cai ntawm kev siv cov kab mob electroluminescent lub npe hu ua lub teeb-emitting diodes, feem ntau hu ua LED.
Thaum nws yog nyob rau hauv cov hauj lwm yav tom ntej ua haujlwm (uas yog, ob qho tag nrho cov hnub ntxiv mus rau pem hauv ntej voltage), tam sim no ntws los ntawm LED anode rau cathode, cov hluav taws xob semiconductor emits lub teeb ntawm cov xim sib txawv ntawm ultraviolet mus rau sab qaum. Kev siv ntawm lub teeb muaj feem xyuam rau qhov tam sim no. Piv txwv li, LED zoo li hamburger, cov khoom siv lub teeb pom kev zoo yog "patties" hauv lub mezzanine, thiab cov electrodes rau saum thiab hauv qab yog cov mov ci nrog nqaij. Los ntawm txoj kev tshawb ntawm cov khoom siv luminescent, neeg maj mam tsim ntau lub teeb xim, LED cov khoom uas muaj kev ua haujlwm zoo dua thiab siab zog, tab sis tsis muaj teeb meem li cas tus luminescence tag nrho thiab cov qauv tsis hloov ntau npaum li cas.