Grain-Boundaries in Polycrystalline Si Solar Cells: Impurities and Passivation

Research output: Contribution to conferencePaperpeer-review


The interrelationships among the chemistry and composition of the intergrain regions, the electro-optical properties of the grain boundaries, and the resulting photovoltaic performance of polycrystalline Si solar cells are examined. Specifically, two impurity-related mechanisms are reported. The first is that of the segregation of oxygen to the grain boundaries during thermal processing of the material/devices. Direct evidence is presented that correlates this oxygen localization to the electrical activation of the grain boundaries. The second is the passivation of the grain boundaries by incorporation of hydrogen in these regions.

Original languageAmerican English
Number of pages10
StatePublished - 1984
EventFifth E.C. Photovoltaic Solar Energy Conference - Kavouri (Athens), Greece
Duration: 17 Oct 198321 Oct 1983


ConferenceFifth E.C. Photovoltaic Solar Energy Conference
CityKavouri (Athens), Greece

NREL Publication Number

  • ACNR/CP-213-3912


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