Ilanga likhanya kwi-semiconductor ye-PN junction, lenza isibini esitsha somngxuma-electron.Ngaphantsi kwesenzo sommandla wombane we-PN junction, umgodi uphuma kwindawo ye-P ukuya kwindawo ye-N, kwaye i-electron ihamba ukusuka kummandla we-N ukuya kwindawo ye-P.Xa isiphaluka sixhunyiwe, i-current iqulunqwa.Yiloo ndlela i-photoelectric effect iiseli zelanga ezisebenza ngayo.
Ukuveliswa kwamandla elanga Kukho iindidi ezimbini zokuvelisa amandla elanga, enye yimowudi yokuguqula ubushushu bokukhanya, enye yindlela yokuguqula umbane wokukhanya ngokuthe ngqo.
(1) Indlela yokuguqula ubushushu bokukhanya isebenzisa amandla obushushu obuveliswa yimitha yelanga ukuvelisa umbane.Ngokuqhelekileyo, amandla ashushu afunxayo aguqulwa abe ngumphunga wendlela yokusebenza ngumqokeleli welanga, kwaye emva koko i-injini yomphunga iqhutywe ukuvelisa umbane.Inkqubo yangaphambili yinkqubo yokuguqula ubushushu bokukhanya;Inkqubo yokugqibela kubushushu - inkqubo yokuguqula umbane.
(2) Isiphumo sombane sisetyenziselwa ukuguqula amandla emitha yelanga ngokuthe ngqo kumandla ombane.Isixhobo esisisiseko sokuguqulwa kweefoto zombane yiseli yelanga.Iseli yelanga sisixhobo esiguqula ngokuthe ngqo amandla okukhanya elanga abe ngamandla ombane ngenxa yesiphumo se-photogeneration volt.Yifotodiode ye-semiconductor.Xa ilanga likhanya kwi-photodiode, i-photodiode iya kuguqula amandla okukhanya kwelanga abe ngamandla ombane kwaye ivelise ngoku.Xa iiseli ezininzi zidityanisiwe kuthotho okanye ngokunxuseneyo, uluhlu lwesikweri lweeseli zelanga ezinamandla amakhulu aphumayo anokwakheka.
Okwangoku, i-crystalline silicon (kuquka i-polysilicon kunye ne-silicon ye-monocrystalline) iyona nto ibaluleke kakhulu ye-photovoltaic, isabelo sayo semarike singaphezulu kwe-90%, kwaye kwixesha elizayo ixesha elide liya kuba zizinto eziqhelekileyo zeeseli zelanga.
Ixesha elide, iteknoloji yokuvelisa izinto ze-polysilicon ilawulwa yi-10 yeefektri zeenkampani ze-7 kumazwe e-3, njenge-United States, iJapan kunye neJamani, eyenza i-blockade yezobuchwepheshe kunye ne-market monopoly.
Imfuno yePolysilicon ikakhulu ivela kwi-semiconductors kunye neeseli zelanga.Ngokweemfuno ezahlukeneyo zokucoceka, zahlulwe kwinqanaba le-elektroniki kunye nenqanaba lelanga.Phakathi kwabo, i-electronic-grade polysilicon i-akhawunti malunga ne-55%, i-solar level polysilicon i-akhawunti ye-45%.
NGOPHUHLISO olukhawulezayo lweshishini le-PHOTOVOLTAIC, imfuno ye-polysilicon kwiiseli zelanga ikhula ngokukhawuleza kunokuphuhliswa kwe-polysilicon ye-semiconductor, kwaye kulindeleke ukuba imfuno ye-polysilicon yelanga iya kudlula i-polysilicon ye-electronic-grade ngo-2008.
Ngo-1994, imveliso epheleleyo yeeseli zelanga emhlabeni yayingama-69MW kuphela, kodwa ngo-2004 yayisondele kwi-1200MW, ukwanda okuphindwe ka-17 kwiminyaka nje eli-10.Iingcali ziqikelela ukuba imboni ye-photovoltaic yelanga iya kudlula amandla enyukliya njengenye yezona zinto zibalulekileyo zemithombo yamandla kwisiqingatha sokuqala senkulungwane ye-21.
Ixesha lokuposa: Sep-15-2022