6533b85afe1ef96bd12b8a5e
RESEARCH PRODUCT
The measurement of impurities in silicon for solar cell production
A OpalaisG KolosovskaG ChikvaidzeA ViksnaA Ositesubject
inorganic chemicalsSiliconPhysics::Instrumentation and DetectorsChemistrytechnology industry and agricultureAnalytical chemistrychemistry.chemical_elementAtomic spectroscopyequipment and suppliescomplex mixtureslaw.inventionstomatognathic diseaseschemistry.chemical_compoundHydrofluoric acidlawImpuritySolar cellDissolutionInductively coupled plasma mass spectrometryMicrowavedescription
The power conversion efficiency of solar cells is largely dependent on impurity levels in silicon. In the current investigations two sample preparation methods of silicon had been used before analysis - acid dissolution at atmospheric pressure and pressured microwave assisted technique. Quantification of impurities in solar silicon was done by inductively coupled plasma mass spectrometry and electrothermal atomic spectrometry. Microwave assisted dissolution of solar silicon was more effective compared to the traditional dissolution method on the hot plate, but complete dissolution of impurities and silicon matrix was achieved with a nitric and hydrofluoric acid mixture. The mass of solar silicon for the microwave dissolution is about 0.5 g and optimal ratio of HF and HNO3 acids mixture is 3 to 5.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-08-20 | IOP Conference Series: Materials Science and Engineering |