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Flexible organic phototransistors are fabricated using polylactide (PLA), a polar biomaterial, as the dielectric material. The charge trapping effect induced by the polar groups of the PLA layer leads to a photosensitivity close to ≈104. The excellent performance of this new device design is further demonstrated by incorporating the phototransistors into a sensor array to successfully image a star pattern.
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Chu et al. (2016) studied this question.
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