The effect of B-site doping in all-inorganic CsPbIxBr3−x absorbers on the performance and stability of perovskite photovoltaics. Issue 2 (10th January 2023)

• Record Type: Journal Article
• Authors: Akman, Erdi; Ozturk, Teoman; Xiang, Wanchun; Sadegh, Faranak; Prochowicz, Daniel; Tavakoli, Mohammad Mahdi; Yadav, Pankaj; Yilmaz, Mucahit; Akin, Seckin
• Is Part Of: Energy & environmental science. Volume 16:Issue 2(2023)
• Page Start: 372
• Page End: 403
• Publication Date: 2023-01-10
• Subjects: Energy conversion -- Periodicals; Fuel switching -- Periodicals; Environmental sciences -- Periodicals; Environmental chemistry -- Periodicals; 333.79
• DOI: 10.1039/d2ee01070d
• Languages: English
• ISSNs: 1754-5692

Abstract

Abstract : The B-site doping strategy ranks as a powerful approach to improve the photovoltaic performance and stability of perovskite solar cells. This article reviews the key roles of B-site doping strategy in all-inorganic perovskite films. Abstract : Despite the impressive efficiency of perovskite solar cells (PSCs), their operational stability is still hindered by the thermodynamic instability of the hybrid organic–inorganic absorber layer with ABX3 structure (A: organic/inorganic cation, B: metal cation, X: halogen anion and mixtures thereof). Due to the hygroscopic and volatile nature of the organic cations, i.e., methylammonium (MA + ), they show very poor stability not only against thermal stress but also moisture. Therefore, a photoactive material free from organic components could offer great opportunities to prolong the operational stability of devices. In this context, all inorganic CsPbI x Br3− x perovskites are meticulously developed in terms of their structural/thermal stability and have triggered increasing research interest due to great prospects in the commercialization of perovskite technology. However, besides relatively low performance, the poor phase stability of inorganic perovskites associated with lattice strain and vacancies still requires a thorough understanding and permanent solutions for tackling these problems. In this comprehensive review, the recently reported B-site doping strategy in inorganic CsPbI x Br3− x perovskite thin films, which has been elucidated to passivate the defects, tune the grain orientation, and enhance the lifetime of charge-carriers, is presented based on different B-site elements belonging to group IIIA, IVA and VA, alkaline-earth, transition, and lanthanide metals. Solutions for confronting these current problems are elaborated and an outlook on further strategies is given.