4, Faculté des sciences de Sfax, Sfax, , Tunisia
2, Dracula Technologies, Valence, , France
1, Centre Interdisciplinaire de Nanoscience de Marseille, Marseille, , France
Organic-inorganic hybrid materials have been broadly investigated owing to their various properties used in optoelectronics and solar cell .
Here, we report synthesis of two new organic-inorganic hybrid materials which are obtained by slow evaporation at room temperature using the same organic cation for two different molar ratio. These two compounds are characterized by X-ray diffraction, infrared and Raman spectroscopy, optical absorption and photoluminescence measurements.
Additionally, we demonstrate that these compounds can be used in organic solar cells. In fact, the energy band gap of these materials was found to be closed to that used in interfacial layers  of some organic solar cells.
By optimizing optical, electrical, and morphological properties of these new wide bandgap materials, bulk heterojunction solar cells with conversion efficiency exceeding 9.5 % are obtained in normal device structures with all-solution-processed interlayers in normal device structure. More importantly, the morphology and especially the surface roughness of these hybrid layers is crucial to obtain hole blocking behavior leading to fill factor up to 72 %.
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