Journal
CHEMISTRY OF MATERIALS
Volume 12, Issue 11, Pages 3306-3315Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm000480t
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We demonstrate the use of micrometer-scale polymer molding, a soft-lithographic patterning technique, as a means to fabricate amorphous silicon thin-film transistors (TFTs). Two different TFT architectures were fabricated and tested-a common gate, common channel architecture for single-level patterning on a spherically curved glass substrate-and an isolated channel, inverted, staggered architecture with multilevel pattern registration on a planar glass substrate. The silicon and silicon nitride films are deposited by reactive magnetron sputtering, allowing all film depositions to be carried out at temperatures at or below 125 degreesC, and making this fabrication process a candidate for use on plastic or other thermally sensitive substrates. We discuss the performance of polymer molding as a patterning technique for thin-film microstructures on both planar substrates and on substrates with three-dimensional curvature.
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