Light-Induced Degradation in Amorphous Silicon Thin Film Solar Cells (IMAGE)

Helmholtz-Zentrum Berlin für Materialien und Energie

Light-Induced Degradation in Amorphous Silicon Thin Film Solar Cells

Caption

In the initial state (left), the voids' internal surfaces are saturated with hydrogen atoms so that no defects are observed. Light-induced charge carriers (h+) destabilize atomic bonds. The breaking of atomic bonds causes defects (indicated by the vertical arrows on the right hand side), which translates to reduced solar cell efficiency.

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Picture: HZB

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