Misiyano mikuru pakati peN-mhando uye P-mhando monocrystalline silicon wafers ye solar photovoltaic
Misiyano mikuru pakati peN-mhando uye P-mhando monocrystalline silicon wafers ye solar photovoltaics
Monocrystalline silicon wafers ane chimiro cheiyo quasi-metals, ine isina simba conductivity, uye conductivity yavo inowedzera nekuwedzera tembiricha. Ivo zvakare vane zvakakosha semiconducting zvivakwa. Nekuita doping ultra-pure monocrystalline silicon wafers ane mashoma eboron, iyo conductivity inogona kuwedzerwa kuita P-mhando silicon semiconductor. Saizvozvo, doping ine shoma shoma yephosphorus kana arsenic inogona zvakare kuwedzera conductivity, kugadzira N-mhando silicon semiconductor. Saka, ndeupi musiyano uripo pakati peP-mhando neN-mhando silicon wafers?
Misiyano mikuru pakati peP-mhando neN-mhando monocrystalline silicon wafers ndeiyi inotevera:
Dopant: Mumonocrystalline silicon, doping ine phosphorus inoita kuti ive N-type, uye doping ine boron inoita P-mhando.
Conductivity: N-mhando ndeye electron-conducting, uye P-mhando ine gomba-kuitisa.
Kuita: Iyo yakawanda phosphorus inodonhedzwa muN-mhando, iyo yakawanda yemahara maerekitironi aripo, iyo yakasimba conductivity, uye yakaderera iyo resistivity. Iyo yakawanda boron inodonhedzwa muP-mhando, iwo maburi akawanda anogadzirwa nekutsiva silicon, kusimba kweiyo conductivity, uye kuderera kwekudzivirira.
Parizvino, P-mhando silicon wafers ndiwo akajairika zvigadzirwa muindasitiri yephotovoltaic. P-mhando silicon wafers ari nyore kugadzira uye ane mutengo wakaderera. N-mhando silicon wafers kazhinji ane hurefu hurefu hwevatakuri vehupenyu, uye kushanda kwemasero ezuva kunogona kuitwa kwepamusoro, asi maitiro acho akanyanya kuoma. N-mhando silicon wafers akaiswa phosphorus, iyo isina kusakwana kunyungudika nesilicon. Panguva yekudhirowa kwetsvimbo, phosphorus haina kugoverwa zvakaenzana. P-mhando silicon wafers akaiswa ne boron, iyo ine yakafanana segregation coefficient kune silicon, uye kufanana kwekupararira kuri nyore kudzora.