Chemistry Reference
In-Depth Information
In many circumstances, photovoltages are found to be almost constant for redox
couples whose formal potentials span a range exceeding the band gap of silicon as
shown for example in Table 6.5.
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A similar effect has been observed in pure acetoni-
trile and acetonitrile-acid mixtures in which a large number of redox couples with a
large span of formal potentials exhibit a similar photovoltage.
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The departure from
the ideal situation described by Eq. (1.96) is often attributed to Fermi level pinning
