Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Perovskite solar devices have experienced the most impressive efficiency progress among all the photovoltaic technologies. However, all breakthroughs have been achieved in lab-scale conditions. Realizing an industry scalable perovskite technology will require moderate the manufacturing lab-scale restrictions. In this work, we explore perovskite solar devices fully fabricated in air environment with relative humidity reaching 70%. A careful study of the processing conditions enabled devices as efficient as 10%. Concretely, the perovskite film morphology and surface coverage was found to be strongly dependent on the perovskite precursor MAI:PbI2 molar ratio and DMSO:DMF volume percentage. A precise adaptation of the solvent engineering technique was developed intended to reach a fast perovskite crystallization in the air environment. At the end, the optimized morphology resulted in an improved short-circuit current density. On the other hand, the incorporation of nickel oxide as hole transporting material enabled full processing below 100 °C. Additionally, spectroscopic and thermogravimetric analysis demonstrated that nickel oxide reduced the interaction of the complete device with ambient moisture. The employed strategy contributes to the technological transference to reach the envisioned low cost mass production of perovskite solar devices.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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