Kev Tshawb Fawb Txoj Kev
- Xaiv ohm txoj cai hauv kev sib cuag hauv qhov tsaus ntuj.
- ntsuas qhov seem conductivity (cov seem lossis tsaus nti tam sim no Io)
- ntsuas lub xeev khov kho photoconductivity rau txhua lub wavelength.
- ntsuas lub teeb teeb liab rau txhua lub wavelength, raug raws li lub ntsuas ntsuas teb (siv txoj cai ntawm peb)
Photoconductivity Nws tshwm sim li cas?
Photoconductivity tshwm sim los ntawm cov electrons tso tawm los ntawm lub teeb thiab los ntawm kev ntws ntawm cov nqi zoo ib yam Cov hluav taws xob tau tsa mus rau cov khoom siv hluav taws xob sib raug rau cov nqi tsis zoo hauv pawg valence, hu ua “qhov.” Ob qho tib si electrons thiab qhov nce qhov ntws tam sim no thaum lub semiconductor illuminated.
YPhotoconductivity hauv semiconductor yog dab tsi?
Photoconductivity yog qhov nce hauv hluav taws xob conductivity uas tsim los ntawm ci ntsa iab ntawm cov khoom… Qhov tshwm sim tom kawg no tshwj xeeb tshaj tawm hauv cov khoom siv hluav taws xob thaum qhov sib txawv me me thiab lub teeb muaj peev xwm ua kom zoo siab. electrons los ntawm tag nrho valence band mus rau hauv lub khoob khoob khoob khoob khoob.
Cov khoom siv photoconductive yog dab tsi?
Photoconductivity yog qhov nce hauv hluav taws xob conductivity ntawm cov khoom siv uas tshwm sim thaum cov khoom siv teeb pom kev zoo nrog infrared, pom, lossis ultraviolet teeb. … Ntau lub photoconductors siab-resistivity ua "ohmic" hu nrog lawv cov electrodes.
Tus piv txwv ntawm photoconductor yog dab tsi?
Classic piv txwv ntawm cov khoom siv hluav taws xob muaj xws li conductive polymer polyvinylcarbazole, siv dav hauv kev luam ntawv; txhuas sulfide, siv nyob rau hauv infrared nrhiav kom tau daim ntaub ntawv, xws li U. S. Sidewinder thiab Lavxias Atoll cua sov nrhiav cuaj luaj; thiab selenium, ua hauj lwm hauv TV thaum ntxov thiab xerography.
