Figure 4.

Model of PS/Ox/FTO heterojunction. Proposed equivalent circuit (a). Two opposite diodes with photocurrent sources are connected in parallel to another diode. Parallel and series resistance are also included. Schematics of PS/Ox/FTO heterojunction and the interfaces associated to each diode in the equivalent circuit (b).

Garc├ęs et al. Nanoscale Research Letters 2012 7:419   doi:10.1186/1556-276X-7-419
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