Pyridine Controlled Tin Perovskite Crystallization

Nasti, Giuseppe; Aldamasy, Mahmoud H.; Flatken, Marion; Musto, Pellegrino; Matczak, Piotr; Dallmann, André; Hoell, Armin; Musiienko, Artem; Hempel, Hannes; Aktas, Ece; Girolamo, Diego Di; Pascual, Jorge; Li, Guixiang; Li, Meng; Mercaldo, Lucia V.; Veneri, P. Delli; Abate, Antonio

doi:10.1021/acsenergylett.2c01749

Cited by 44 publications

(42 citation statements)

References 35 publications

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“…Reproduced with permission. [ 81 ] Copyright 2022, American Chemical Society. d) Schematic illustration: the effect of acetic acid (HAc) on regulation of crystallization kinetics and improvement of crystalline quality.…”

Section: Strategies For Suppressing Sn(ii)/sn(iv) Oxidation In Tpscsmentioning

confidence: 99%

Origins and Suppression of Sn(II)/Sn(IV) Oxidation in Tin Halide Perovskite Solar Cells

Liu

Yao

Wang

et al. 2023

Advanced Energy Materials

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Tin halide perovskite solar cells (TPSCs) have attracted aggressive research interest in the emerging perovskite photovoltaic devices due to their eco-friendliness as compared to their lead halide counterparts. However, the easy Sn(II)/Sn(IV) oxidation of tin perovskites is a serious impediment to the development of TPSCs. Therefore, a clear understanding of the mechanisms, origins, and effects of the oxidation is essential to further boost the performance and stability of TPSCs. Herein, a systematic overview of the physicochemical process for the Sn(II)/Sn(IV) oxidation in TPSCs from the starting precursors to the final devices is presented. In addition, the effects of oxidation on the performance of TPSCs are then reviewed from crystal structure, defect chemistry, and optoelectronic properties. More importantly, the key issues to suppress the Sn(II)/Sn(IV) oxidation are seriously discussed on the basis of the reported antioxidation strategies. Finally, the challenges and outlooks toward TPSCs with higher power conversion efficiency and stability are proposed.

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Section: Strategies For Suppressing Sn(ii)/sn(iv) Oxidation In Tpscsmentioning

confidence: 99%

Origins and Suppression of Sn(II)/Sn(IV) Oxidation in Tin Halide Perovskite Solar Cells

Liu

Yao

Wang

et al. 2023

Advanced Energy Materials

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“…Numerous works have been devoted to enhancing the crystal quality of THPs by controlling the crystallization processes of THP films. − For instance, Hao et al revealed that an intermediate solvate SnI 2 ·3DMSO could form to reduce the crystal growth rate of THPs when dimethyl sulfoxide (DMSO) was chosen as the solvent of a THP precursor solution . Jokar et al reported that the nucleation sites of THPs increased after introducing EDAI 2 in the FASnI 3 (FA: formamidinium) film, resulting in uniform and dense THP films .…”

mentioning

confidence: 99%

Oriented Attachment of Tin Halide Perovskites for Photovoltaic Applications

et al. 2023

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Tin halide perovskites (THPs) are hopeful replacements to toxic Pb-based perovskites in lead-free photovoltaic applications. Nevertheless, the underlying crystallization kinetics mechanism lacks exploration to inform the rational design of high-quality THP films for the fabrication of optoelectronic devices. Here, we reveal a crystal growth kinetic regime for oriented attachment growth of THPs. By introducing 2-phenoxyethylamine bromide (POEBr) to tune the surface energy of different facets of FASnI3 perovskite crystals, highly oriented FASnI3-POEBr perovskite films are obtained. The crystalline films with anisotropic properties can be rationalized through the crystal growth kinetics mechanism called “oriented attachment (OA)”, where two smaller nanocrystals with the same crystallographical orientation combine together to produce a larger nanocrystal. The OA growth kinetics is amenable to reducing the crystal growth rate and consequently allows the formation of dense, smooth, and oriented THP films with fewer defects, delivering an impressive efficiency of over 14%.

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“…The competition of crystallization and reconstruction kinetics leads to poor-quality thin lms with visible pinholes and disordered crystal orientation, and to nal low-efficiency photovoltaic devices. 8,9 Currently, the highest reported photovoltaic efficiency based on 2D RP tin halide perovskite (n = 4) is 10.36%, 10 far lower than its Shockley-Queisser limit value (∼32%). 11 Several efforts have been made to control the crystallization process of RP tin-based perovskites via additives, [12][13][14] solvents, 15,16 and composition engineering.…”

Section: Introductionmentioning

confidence: 98%