| http://www.w3.org/ns/prov#value | - The photosensitive layer 21 may also have a transition layer, which transits stepwisely (or substantially gradually) from the compositionin one layer toward the composition of the other layer, between the layers constituting the photosensitive layer 21.The photoconductor layer 211 is for generating free electrons or carriers such as holes due to the excitation of electrons, which is caused by the
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