Photoconductivity experiments using steady illumination with visible light have been carried out with emeraldine base to estimate the mobility of the photoexcited charge carrier. The results are compared with the earlier transient photoconductivity measurements. The low value for mobility of 3.5×10−5 cm2/V s obtained is ascribed to bipolaron formation. Photoelectrochemical measurements of charge decay with emeraldine salt electrode are also reported and compared with the above values.
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Annapoorni et al. (1993) studied this question.
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