Piv txwv ntawm Txoj Cai ntawm Solar Panels
Piv txwv ntawm Txoj Cai ntawm Solar Panels
Lub hnub ci zog yog lub zog zoo tshaj plaws rau tib neeg, thiab nws cov yam ntxwv tsis muaj zog thiab rov ua dua tshiab txiav txim siab tias nws yuav dhau los ua qhov pheej yig tshaj plaws thiab siv tau zoo tshaj plaws rau noob neej. Hnub ci vaj huam sib luag yog lub zog huv si yam tsis muaj kuab paug ib puag ncig. Dayang Optoelectronics tau tsim sai heev nyob rau hauv xyoo tas los no, yog qhov kev tshawb fawb zoo tshaj plaws, thiab tseem yog ib qho ntawm cov haujlwm siab tshaj plaws.
Cov txheej txheem ntawm kev ua cov hnub ci vaj huam sib luag yog tsim los ntawm cov khoom siv semiconductor, thiab nws txoj hauv kev ua haujlwm yog siv cov khoom siv hluav taws xob los nqus lub zog tom qab photoelectric hloov dua siab tshiab, raws li cov ntaub ntawv sib txawv siv, tuaj yeem muab faib ua: silicon-based solar cells thiab nyias. -film solar cells, hnub no feem ntau los tham nrog koj txog silicon-based solar panels.
Ua ntej, silicon solar panels
Silicon solar cell ua hauj lwm hauv paus ntsiab lus thiab cov qauv duab Lub hauv paus ntsiab lus ntawm lub hnub ci hluav taws xob tsim hluav taws xob feem ntau yog cov nyhuv photoelectric ntawm semiconductors, thiab cov qauv tseem ceeb ntawm semiconductors yog raws li hauv qab no:
Tus nqi zoo sawv cev rau silicon atom, thiab tus nqi tsis zoo sawv cev rau plaub lub electrons orbiting atom silicon. Thaum cov silicon siv lead ua yog tov nrog lwm yam impurities, xws li boron, phosphorus, thiab lwm yam, thaum boron ntxiv, yuav muaj ib lub qhov nyob rau hauv silicon siv lead ua, thiab nws tsim yuav xa mus rau cov nram qab no daim duab:
Tus nqi zoo sawv cev rau silicon atom, thiab tus nqi tsis zoo sawv cev rau plaub lub electrons orbiting atom silicon. Cov xim daj qhia tau hais tias qhov sib xyaw boron atom, vim tias tsuas muaj 3 electrons nyob ib ncig ntawm boron atom, yog li nws yuav tsim lub qhov xiav qhia hauv daim duab, uas yuav tsis ruaj khov vim tsis muaj hluav taws xob, thiab nws yooj yim rau nqus electrons thiab neutralize. , tsim P (zoo) hom semiconductor. Ib yam li ntawd, thaum phosphorus atoms koom nrog, vim tias phosphorus atoms muaj tsib electrons, ib lub electron ua haujlwm heev, tsim N (tsis zoo) hom semiconductors. Cov daj yog cov phosphorus nuclei, thiab cov liab yog cov tshaj electrons. Raws li pom hauv daim duab hauv qab no.
P-hom semiconductors muaj ntau qhov, thaum N-hom semiconductors muaj ntau cov hluav taws xob, yog li thaum P-hom thiab N-hom semiconductors sib xyaw ua ke, qhov hluav taws xob muaj peev xwm sib txawv yuav tshwm sim ntawm qhov chaw sib cuag, uas yog PN kev sib tshuam.
Thaum P-hom thiab N-hom semiconductors sib xyaw ua ke, txheej nyias nyias yog tsim nyob rau hauv thaj tsam interfacial ntawm ob lub semiconductors), thiab P-hom sab ntawm lub interface yog tsis zoo them thiab N-hom sab yog zoo them. Qhov no yog vim qhov tseeb tias P-hom semiconductors muaj ntau lub qhov, thiab N-hom semiconductors muaj ntau cov electrons dawb, thiab muaj qhov sib txawv concentration. Electrons nyob rau hauv N cheeb tsam diffuse mus rau hauv cheeb tsam P, thiab qhov nyob rau hauv lub cheeb tsam P diffuse mus rau hauv lub N cheeb tsam, tsim ib tug "sab hauv hluav taws xob teb" qhia los ntawm N mus rau P, yog li tiv thaiv diffusion los ntawm kev mus. Tom qab ncav cuag qhov sib npaug, xws li txheej nyias nyias yog tsim los tsim qhov sib txawv, uas yog PN kev sib tshuam.
Thaum lub wafer raug rau lub teeb, lub qhov ntawm N-hom semiconductor nyob rau hauv lub PN hlws ris mus rau lub P-hom cheeb tsam, thiab cov electrons nyob rau hauv lub P-hom cheeb tsam tsiv mus rau lub N-hom cheeb tsam, uas ua rau ib tug tam sim no los ntawm P-hom cheeb tsam. N-hom cheeb tsam mus rau thaj tsam P-hom. Tom qab ntawd qhov sib txawv muaj peev xwm raug tsim nyob rau hauv PN hlws ris, uas tsim cov khoom siv hluav taws xob.