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We studied the space charge limited current effect in hydrogenated amorphous silicon (a‐Si:H) thin‐film transistors (TFTs). We demonstrate that the drain current is space charge limited when the source‐drain voltage is large and the gate voltage is small. Using this space charge limited current we determined the density of states in the gap of a‐Si:H in a‐Si:H TFT.
Published in:
Applied Physics Letters
(Volume:63
,
Issue:
6
)
Date of Publication: Aug 1993