工业硅中典型杂质元素的微观结构及分布规律研究

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Abstract：Aiming attheinfluence of boronandotherimpurities insilicononphotovoltaic powergeneration eficiency in industrialsilicon，thisstudysystematicallyanalyzedtheoccurrenceandmicrostructuredistributionofimpurityelementsinrefined industrial siliconbyscanning electronmicroscope （SEM），energydispersive spectrometer（EDS）and electronprobe microanalysis（EPMA）.Theresults show that elements BandParedispersedand evenlydistributed.Metalimpurities such as Al，Ca，FeandTiaresignificantlyenichedatgrainboundaries，formingcompositephasessuchasAl-Si-FeandC-AlSi-Ca.C element is mainlydispersed，and there is SiC-rich phase locally.

Keywords： industrial silicon; impurities;microstructure; inclusion; occurrence state

2011一2021年全球工业硅产能整体上呈现增长趋势，预计2025年全球产能将达到814万吨。（剩余3065字）