Halide Perovskite Solar Cells for Building Integrated Photovoltaics: Transforming Building Façades Into Power Generators.

The rapid emergence of organic-inorganic lead halide perovskites for low-cost and high-efficiency photovoltaics promises to impact new photovoltaic concepts. Their high power conversion efficiencies, ability to coat perovskite layers on glass via various scalable deposition techniques, excellent optoelectronic properties and synthetic versatility for modulating transparency and colour, allows perovskite solar cells (PSCs) to be an ideal solution for building-integrated photovoltaics (BIPV) which transforms windows or façades into electric power generators. In this review, the unique features and properties of PSCs for BIPV application are accessed. Device engineering and optical management strategies of active layers, interlayers and electrodes for semi-transparent, bifacial and colourful PSCs are also discussed. The performance of PSCs under conditions that are relevant for BIPV such as different operational temperature, light intensity and light incident angle are also reviewed. Recent outdoor stability testing of PSCs in different countries and other demonstration of scalability and deployment of PSCs are also spotlighted. Finally, the current challenges and future opportunities for realising perovskite based BIPV are discussed. This article is protected by copyright. All rights reserved.