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Figure 3 | Nanoscale Research Letters

Figure 3

From: The heterojunction effects of TiO2 nanotubes fabricated by atomic layer deposition on photocarrier transportation direction

Figure 3

Short circuit current as a function of time under on/off UV illumination cycles. The short circuit current as a function of time under on/off UV illumination cycles when a positive bias is applied to the ITO electrode (a) and when a negative bias is applied (b). Figures (c) and (d) are the corresponding energy band diagrams with respect to (a) and (b).

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