Additional file 3.

Figure S4. Dark current–voltage characteristic curves of CuInS2-based QDSSC with (red dots) and without (black squares) In2S3 buffer. Figure S5. IPCE spectra of CuInS2 QD-sensitized solar cell with different SILAR cycles.

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Zhou et al. Nanoscale Research Letters 2012 7:652   doi:10.1186/1556-276X-7-652