An Integrated Approach Combining Compositional and Interfacial Material Engineering to Improve the Performance and Stability of Perovskite Solar Cells
Alex Jen a
a University of Washington, US, Seattle, United States
NIPHO
Proceedings of Perovskite Thin Film Photovoltaics (ABXPV16)
Barcelona, Spain, 2016 March 3rd - 4th
Organizers: Emilio Palomares and Nam-Gyu Park
Invited Speaker, Alex Jen, presentation 021
Publication date: 14th December 2015

Advances in controlled synthesis, processing, and tuning of the properties of interfacial materials and perovskites have enabled significantly enhanced performance of hybrid perovskite solar cells. The performance of these solar cells is strongly dependent on their efficiency in harvesting light, charge transport, and charge collection at the metal/perovskite/metal oxide or the metal/ perovskite/organic interfaces.

However, the potential for perovskite photovoltaics to create transformative energy generation is currently restrained by its reliability issues regard hysteresis and degradation. In order to address these challenges, we have employed an integrated material, interface, and device engineering approach to establish perovskite structure-property relationships and interfacial material design rules to enable rational design of highly efficient and stable devices. This has resulted in devices with both high power conversion efficiency (PCE of >18%) and minimum hysteresis. The mechanistic insight we build directly toward hysteresis can be extended to address issues related to degradation and stability. This integrated design approach will have the potential to address these issues at their source, enabling better and timely design of suitable perovskite compositions and interfacial materials to facilitate technology translation to industry.



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