Thaum lub LED ua haujlwm, cov xwm txheej hauv qab no tuaj yeem ua rau qhov sib txuas ntawm qhov kub thiab txias mus rau qhov sib txawv.

1, Nws tau raug pov thawj tias qhov kev txwv ntawm luminous efficiency yog lub ntsiab yog vim li cas rau qhov sawv ntawmLED kev sib tshuamkub. Tam sim no, kev loj hlob ntawm cov khoom siv thiab cov txheej txheem tsim khoom tuaj yeem hloov pauv feem ntau ntawm cov khoom siv hluav taws xob hluav taws xob ntawmLED rau hauv lub teebhluav taws xob zog. Txawm li cas los xij, vim tias cov ntaub ntawv LED nti muaj ntau qhov sib txawv loj dua li cov xov xwm nyob ib puag ncig, ib feem loj ntawm photons (> 90%) tsim nyob rau hauv lub nti tsis tuaj yeem ua kom zoo hla lub interface, thiab tag nrho cov kev xav tau yog tsim los ntawm nti thiab xov xwm interface, Nws rov qab mus rau sab hauv ntawm lub nti thiab yog thaum kawg absorbed los ntawm cov ntaub ntawv nti los yog substrate los ntawm ntau yam sab hauv reflections, thiab ua kub nyob rau hauv daim ntawv ntawm lattice vibration, txhawb lub hlws ris kub nce.

2, Txij li thaum PN kev sib tshuam tsis tuaj yeem ua tau zoo heev, qhov kev txhaj tshuaj ntawm cov khoom yuav tsis ncav cuag 100%, uas yog, ntxiv rau cov nqi (qhov) txhaj rau hauv N cheeb tsam hauv cheeb tsam P, N cheeb tsam kuj yuav txhaj tshuaj. them (electron) rau hauv P cheeb tsam thaum lub LED ua haujlwm. Feem ntau, hom tom kawg ntawm kev txhaj tshuaj yuav tsis tsim cov nyhuv optoelectric, tab sis yuav tau noj hauv cov cua sov. Txawm hais tias qhov tseem ceeb ntawm cov nqi txhaj tshuaj tsis yog tag nrho los ua lub teeb, qee qhov yuav dhau los ua cua sov thaum ua ke nrog impurities lossis qhov tsis xws luag hauv qhov chaw sib tshuam.

3 、 Cov qauv hluav taws xob tsis zoo ntawm cov khoom siv, cov ntaub ntawv ntawm lub qhov rais txheej substrate los yog hlws ris cheeb tsam, thiab cov conductive silver kua nplaum tag nrho muaj tej yam tseem ceeb kuj. Cov kev tawm tsam no yog stacked tawm tsam ib leeg los tsim cov kev tawm tsam ntawm covLED khoom. Thaum cov tam sim no ntws los ntawm PN hlws ris, nws tseem yuav ntws los ntawm cov resistors, uas ua rau Joule kub, uas yuav ua rau lub siab kub los yog hlws ris kub.