Perpustakaan Digital ITB

Commercialization of solar cells based on photoactive leadhalide perovskites is in part limited by their toxicity and instability. In thisstudy, new and related copper halide hybrid organic?inorganic materialscontaining dicationic hexane-1,6-diammonium (+H3N?C6H12?NH3+) dem-onstrated superior stability to heat and moisture in comparison to theanalogous material containing monocationicn-propylammonium (C3H7?NH3+) in twice the stoichiometry. Electronic absorption spectra taken of thematerials were consistent with an indirect optical bandgap of?1.8 eV, makingthem well-suited for application as the photoactive layer in the top cell of atandem solar cell with silicon. The best-performing single-junction solar cellscontaining the dicationic material as the photoactive layer exhibited an open-circuit photovoltage in excess of 400 mV and a short-circuit photocurrentdensity of?30?A/cm2. These values are similar to those reported for state-of-the-art copper halide hybrid organic?inorganic materials containing organic monocations and motivate further research onthis class of materials.