Sb 2 S 3 is a promising candidate for solar cell absorbers due to its high absorption coefficient, suitable band gap and earth-abundant constituents. Here we present the preparation of hybrid solar cells from an ink of colloidal Sb 2 S 3 nanoparticles and P3HT. Colloidal Sb 2 S 3 nanoparticles were prepared via hot injection method. Solar cells based on these nanoparticles achieves a power conversion efficiency of 1.5%, which is efficiency record for planar hybrid solar cells based on Sb 2 S 3 nanoparticles. We investigated in detail the role of the capping agents on the performance of solar cells.
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