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Recent defect passivation drifts and role of additive engineering in perovskite photovoltaics

2022-08-12

 

Author(s): Hassan, AL (Hassan, Ali); Wang, ZJ (Wang, Zhijie); Ahn, YH (Ahn, Yeong Hwan); Azam, M (Azam, Muhammad); Khan, AA (Khan, Abbas Ahmad); Farooq, U (Farooq, Umar); Zubair, M (Zubair, Muhammad); Cao, Y (Cao, Yu)

Source: NANO ENERGY Volume: 101 Article Number: 107579 DOI: 10.1016/j.nanoen.2022.107579 Published: OCT 2022

Abstract: Rapid progress in the efficiency of hybrid lead halide perovskite photovoltaics surpassed the semiconductor thin-film solar cells such as CdTe (cadmium telluride), CZTS (copper zinc tin sulfide), and CIGS (copper indium gallium selenide) within a decade. Furthermore, low-cost solution processibility demonstrated the immense potential of perovskite solar cells (PSCs) as an alternative to commercially available light-harvesting materials. Despite the fast-track development in perovskite photovoltaic technology, several drawbacks are mainly linked with defects, including undercoordinated ions, band offsets, grain boundaries, photocurrent hysteresis, and environmental instability: restraint the industrialization of perovskite photovoltaics. Herein, we present the comprehensive knowledge of the source, nature, correlation with photophysical properties, and overlapping effects of these defects. The defects are categorized based on their energy levels within the conduction and valence bands, such as deep or shallow level defects, and their dimensionality (e.g., point defects such as va-cancies, dislocation, grain boundaries, and cracks are regarded as zero-, one-, two-, and three-dimensional de-fects). Furthermore, we developed the fundamental understanding of defect-mediated, nonradiative recombination, ion migration, carrier trapping, and their cross-link with device performance and photocurrent hysteresis. Besides, an overview of topical defect passivation strategies on perovskite absorber, materials interface, charge transport layers, surface passivation, contact passivation, and additive engineering has been spotlighted. Finally, based on past and present defect healing drifts, we have summarized and recommended suggestions for next-generation PSCs, which will pave the way for swift industrialization.

Accession Number: WOS:000831981000001

ISSN: 2211-2855

eISSN: 2211-3282

Full Text: https://www.sciencedirect.com/science/article/pii/S2211285522006577?via%3Dihub



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