Defects introduced in amorphous silicon thin films by light soaking (CROSBI ID 94543)
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Podaci o odgovornosti
Pivac, Branko ; Kovačević, Ivana ; Zulim, Ivan
engleski
Defects introduced in amorphous silicon thin films by light soaking
The effect of light soaking on a-Si:H films is well known as Staebler-Wronski effect, though its complete mechanism is not clear yet. The effect of light soaking with UV and white light on intrinsic a-Si:H films was studied. It is shown that device quality a-Si:H films contain a considerable amount of oxygen. The light soaking of the films in the air affected differently low and high-hydrogen a-Si films. It was shown that deep levels in the gap introduced by light soaking are related to oxygen presence. The hydrogen present in the film influences differently the effects of light soaking in a function of its concentration.
amorphous silicon ; solar cells ; light soaking ; defects
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