Cyclic photocurrent dark current measurements on cells with hysteresis of different magnitudes reveal that photo-induced electrical instability (not material degradation), which might be originated from ion migration or photo-induced traps formation, is not related to hysteresis.
It was addressed in 2000 by the photographer Sebastião Salgado in "Migrations," a photo book and a traveling exhibition.
This unusual photocatalytic activity may be resulted from the positive synergetic effect of efficient light absorption, promoted separation and migration of photo-induced electron-hole carriers.
On the other hand, the porous structures of MOFs can also provide extra pathways for the migration of photo-induced electrons and facilitate separation of the charge carrier [36, 37].
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It is postulated that the excellent photocatalytic activity of WS2/Bi2MoO6 should be ascribed to its high migration efficiency of photo-induced carriers and the interfacial electronic interaction.
This improvement was attributed to the following two reasons: increased migration efficiency of photo-induced electrons and increased adsorption activity for dye molecules.
These results are consistent with the premise that substrates for P-glycoprotein are confined to membrane loci associated with the transporter, and indicate a very limited migration of cytotoxic photo-products in a cellular environment.
Moreover, because the wavelengths of photo-assistance were reduced, the electron voltage of the photo-assistance was raised to enhance surface migration of reduced atoms by photo-assistance [13].
This improvement is attributed to the following two reasons: enhanced migration efficiency of the photo-induced electrons and enhanced adsorption activity of the dye molecules.
