Bambanci tsakanin silicon monocrystalline da polysilicon

Kayan silicon shine mafi sauƙi kuma mafi mahimmanci a masana'antar semiconductor. Tsarin samar da sarkar masana'antar semiconductor mai rikitarwa yakamata ya fara daga samar da kayan silicon na asali.

Hasken Lambun Hasken Rana na Silicon monocrystalline

Silicon mai siffar monocrystalline wani nau'i ne na silicon mai siffar elemental. Lokacin da silicon mai siffar narke ya taurare, ana shirya ƙwayoyin silicon a cikin layin lu'u-lu'u zuwa cikin ƙwayoyin lu'u-lu'u da yawa. Idan waɗannan ƙwayoyin lu'u-lu'u suka girma zuwa hatsi tare da yanayin da aka tsara na siffar lu'u-lu'u, za a haɗa waɗannan ƙwayoyin a layi ɗaya don su zama silicon mai siffar monocrystalline.

Sinadarin silicon mai siffar monocrystalline yana da halaye na zahiri na ƙarfe mai siffar quasi-metal kuma yana da rauni na wutar lantarki, wanda ke ƙaruwa tare da ƙaruwar zafin jiki. A lokaci guda, silikon monocrystalline shi ma yana da babban ƙarfin lantarki. Sinadarin monocrystalline mai siffar supercrystal ne na ciki. Ana iya inganta ƙarfin lantarki na silikon monocrystal mai siffar supercrystal ta hanyar ƙara abubuwan da ke nuna alamun ⅢA (kamar boron), kuma ana iya ƙirƙirar semiconductor na silikon nau'in P. Kamar ƙara abubuwan da ke nuna alamun ⅤA (kamar phosphorus ko arsenic) shi ma yana iya inganta matakin ƙarfin lantarki, samuwar semiconductor na silikon nau'in N.

polysiliconhasken rana

Polysilicon wani nau'i ne na silikon elemental. Lokacin da silikon elemental ya taurare a ƙarƙashin yanayin sanyaya iska, ana shirya ƙwayoyin silicon zuwa cikin ƙwayoyin kristal da yawa a cikin nau'in layin lu'u-lu'u. Idan waɗannan ƙwayoyin kristal suka girma zuwa hatsi masu bambancin yanayin lu'u-lu'u, waɗannan ƙwayoyin suna haɗuwa kuma suna zama polysilicon. Ya bambanta da silikon monocrystalline, wanda ake amfani da shi a cikin ƙwayoyin lantarki da hasken rana, da kuma silikon amorphous, wanda ake amfani da shi a cikin na'urori masu sirara da kumahasken lambun ƙwayoyin hasken rana

Bambanci da alaƙa tsakanin su biyun

A cikin silicon mai siffar monocrystalline, tsarin firam ɗin kristal ɗin iri ɗaya ne kuma ana iya gano shi ta hanyar kamannin waje iri ɗaya. A cikin silicon mai siffar monocrystalline, layin kristal na dukkan samfurin yana ci gaba kuma ba shi da iyakokin hatsi. Manyan lu'ulu'u guda ɗaya ba su da yawa a yanayi kuma suna da wahalar yin su a cikin dakin gwaje-gwaje (duba sake yin amfani da su). Sabanin haka, matsayin ƙwayoyin halitta a cikin tsarin amorphous an iyakance su ga tsari na ɗan gajeren lokaci.

Matakan Polycrystalline da subcrystalline sun ƙunshi adadi mai yawa na ƙananan lu'ulu'u ko microcrystals. Polysilicon abu ne da aka yi da ƙananan lu'ulu'u na silicon. Kwayoyin Polycrystalline na iya gane laushi ta hanyar tasirin ƙarfe mai ganuwa. Ana canza ma'aunin Semiconductor ciki har da polysilicon na hasken rana zuwa monocrystalline silicon, ma'ana cewa lu'ulu'u da aka haɗa bazuwar a cikin polysilicon an canza su zuwa babban lu'ulu'u ɗaya. Ana amfani da silicon monocrystalline don yin yawancin na'urorin microelectronic da ke tushen silicon. Polysilicon na iya samun tsarkin 99.9999%. Ana kuma amfani da polysilicon mai tsarki sosai a masana'antar semiconductor, kamar sandunan polysilicon masu tsayin mita 2 zuwa 3. A cikin masana'antar microelectronics, polysilicon yana da aikace-aikace a duka ma'aunin macro da micro. Tsarin samar da silicon monocrystalline ya haɗa da tsarin Czeckorasky, narkewar yanki da tsarin Bridgman.

Bambancin da ke tsakanin polysilicon da monocrystalline silicon galibi yana bayyana ne a cikin halayen zahiri. Dangane da halayen injiniya da na lantarki, polysilicon ya fi ƙasa da monocrystalline silicon. Ana iya amfani da Polysilicon a matsayin kayan aiki don zana silicon monocrystalline.

1. Dangane da anisotropy na halayen injiniya, halayen gani da halayen zafi, ba a bayyane yake sosai kamar silicon monocrystalline ba.

2. Dangane da halayen lantarki, ikon amfani da wutar lantarki na silicon polycrystalline bai kai na silicon monocrystalline muhimmanci ba, ko ma kusan babu ikon amfani da wutar lantarki.

3, dangane da aikin sinadarai, bambanci tsakanin su biyun yana da ƙanƙanta sosai, gabaɗaya ana amfani da polysilicon fiye da