Detail publikace

Fast New Method for Temporary Chemical Passivation

SOLČANSKÝ, M. VANĚK, J. PORUBA, A.

Originální název

Fast New Method for Temporary Chemical Passivation

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The main material parameter of silicon, that influences the effectiveness of photovoltaic cells, is the minority carrier bulk lifetime. It may change in the technological process especially during high temperature operations. Monitoring of the carrier bulk-lifetime is necessary for modifying the whole technological process of production. For the measurement of the minority carrier bulk-lifetime the characterization method MW PCD (Microwave Photoconductance Decay) is used, where the result of measurement is the effective carrier lifetime, which is very dependent on the surface recombination velocity and therefore on the quality of a silicon surface passivation. sivation. This work deals with an examination of a different solution types for the chemical passivation of a silicon surface. Various solutions are tested on silicon wafers for their consequent comparison. The main purpose of this work is to find optimal solution, which suits the requirements of a time stability and start-up velocity of passivation, reproducibility of the measurements and a possibility of a perfect cleaning of a passivating solution remains from a silicon surface. Another purpose of this work is to identify the parameters of other quinhydrone solutions with different concentrations as compared with the quinhydrone solution in methanol with a concentration of 0.07 mol/dm3 marked QM007 (referential solution). The method of an effective chemical passivation with a quinhydrone in methanol solution was suggested. The solution with a concentration of 0.07 mol /dm3 fulfills all required criteria. The work also confirms the influence of increased concentration quinhydrone on the temporal stability of the passivation layer and the effect for textured silicon wafers. In conclusion, the influence of an illumination and the temperature on the properties of the passivating solution QM007 is discussed.

Klíčová slova

chemical passivation, quinhydrone, carrier bulk- lifetime, Microwave Photoconductance Decay

Autoři

SOLČANSKÝ, M.; VANĚK, J.; PORUBA, A.

Rok RIV

2013

Vydáno

17. 5. 2013

Nakladatel

Acta Montanistica Slovaca

Místo

Košice

ISSN

1335-1788

Periodikum

Acta Montanistica Slovaca

Ročník

17

Číslo

4

Stát

Slovenská republika

Strany od

263

Strany do

267

Strany počet

5

BibTex

@article{BUT99710,
  author="Marek {Solčanský} and Jiří {Vaněk} and Aleš {Poruba}",
  title="Fast New Method for Temporary Chemical Passivation",
  journal="Acta Montanistica Slovaca",
  year="2013",
  volume="17",
  number="4",
  pages="263--267",
  issn="1335-1788"
}