The former device exhibited the best PCE of 0.013% with the Jsc of 77 μA/cm2, while the PCE for the Vorinostat supplier latter suddenly decreased, which may have resulted from the degradation of polymer. Figure 6 XRD spectra (a) and I-V characteristics of P3HT/CIGS NC hybrid PV (b) with and without thermal annealing. (a) devices with and without thermal annealing; (b) P3HT/CIGS NC hybrid PV at different annealing conditions. Conclusions This work investigated and discussed on the bulk heterojunction of solar cell based on the P3HT/CIGS NC hybrid active layer. Approaches such as blend ratios of CIGS NCs, solvent effects on the morphologies, interface between P3HT/CIGS NCs, and device thermal treatments have been investigated

to enhance the power-conversion efficiency of the hybrid solar cells in detail. The best performance of devices was fabricated from a blend ratio of 1 to 3 by weight in P3HT to CIGS NCs, dichlorobenzene as solvent, pyridine as surfactant, yielding the highest PCE of approximately 0.017%. Acknowledgments This research was supported by the National compound screening assay Science Council through Grant no. EVP4593 in vitro 101-2622-E-007-011-CC2, 101-2622-E-492-001-CC2, NSC 101-2218-E-007- 009-MY3, NSC 100-2628-E-007-029-MY2, NSC 101-2623-E-007-013-IT, and the National Tsing Hua University through Grant no. 102N2022E1, 102N2051E1, and 102N2061E1. Y.L. Chueh greatly appreciates the use of facility at CNMM, National

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