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Room temperature absorption and photoluminescence spectra of PbSe NQDs dispersed in terachloroethylene. Insets: (a) schematic of device structure, (b) energy level diagram of the hybrid solar cell, and (c) high-resolution transmission electron micrograph of a 6 nm PbSe quantum dot.
Cross-section scanning electron micrograph of a P3HT/P3HT:PbSe integrated planar-bulk heterojunction photovoltaic cell structure.
Current-voltage characteristics of hybrid solar cells containing, respectively, the bulk heterojunction and the integrated planar-bulk heterojunction structures in dark (a) and under 532 nm (b) and 808 nm (inset) illumination conditions .
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