The nonhalides in perovskite solar cells

Wang, Shurong; Wu, Cheng; Yao, Huanhuan; Ding, Liming; Hao, Feng

doi:10.1039/d2qm01147f

Cited by 8 publications

(5 citation statements)

References 107 publications

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“…The search for new A-site cation spacers and the combination of A-and X-site such as GA + and SCN − which contribute to form a 2D/3D vertical heterojunction in TPSCs and PEA + and SCN − which were used to form 2D/quasi-2D/3D tin perovskite structure may be the two promising directions for preparing more stable TPSCs in the future. [135,138,139,164,165] 3) The unique preparation process and device structure of TP-SCs are both important for the performance and stability of TPSCs. Hayase and co-workers and Ning and co-workers tailored exclusive preparation methods and device structures for TPSCs based on the characteristics of tin perovskite and obtained 14.7% and 14.09% PCE, respectively.…”

Section: Challenges and Outlookmentioning

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: Challenges and Outlookmentioning

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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“…Previous reports have confirmed that employing a low concentration (below 1 mg/mL) of PEAI/chlorobenzene as the antisolvent washing to fabricate perovskite films, the PEA + cations were located exclusively at the surface of the perovskite film, thus achieving the passivation on the surface defects at the perovskite/ETL interface. Hence, we believed that the p-FPEAI additive is located merely at the top surface; after the washing, their passivation function was already achieved by coordinating the perovskite defects with the great electron affinity of F – anions and PEA + cations. − …”

Section: Resultsmentioning

confidence: 99%

Ammonium Additive Engineering in Antisolvents for Improving Perovskite/Charge-Transport-Layer Interfaces toward Efficient Lead–Tin Alloyed Perovskite Solar Cells

Zhang,

Qian,

Zhai

et al. 2024

ACS Appl. Mater. Interfaces

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Although significant advancements have been achieved in lead−tin (Pb−Sn) alloyed perovskite solar cells (PSCs), their power conversion efficiency (PCE) remains inferior to that of their Pb-based counterparts, primarily due to higher open-circuit voltage (V oc ) losses and lower fill factors (FFs). Herein, we report both perovskite top and bottom interfacial improvements by incorporating a facile fluorophenylethylammonium iodide (p-FPEAI)/ethyl acetate (EA) solution during the film crystal growth. Based on the analysis of perovskite crystallization, film growth, and strain relaxation, the mechanisms behind these interfacial improvements have been well understood. Furthermore, p-FPEAI could reduce the defect density and nonradiative recombination losses, thus attributing to the improved V oc and FF. Finally, the treated device achieved a PCE of 20.14% with a V oc of up to 0.84 V, which is among the highest reported values so far for Pb−Sn alloyed PSCs without additional precursor additives. In addition, the unencapsulated p-FPEAI-treated device maintained its initial efficiency of approximately 92% after being kept in a nitrogen atmosphere for 1 month, in contrast to the control device which retained only 30% of its initial value. Our findings provide a comprehension for understanding the effect of bulky cations as antisolvents on fabricating highly efficient Pb−Sn alloyed perovskite solar cells.

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“…In light of the global energy crisis and the increasing issue of environmental pollution, renewable and clean energy are essential for sustainable development. [1][2][3][4][5] The ability of solar cells to convert sunlight directly into electricity makes them one of the most popular renewable energy technologies today. [6][7][8][9][10] Among many solar cells, silicon solar cells occupy the primary photovoltaic market due to their mature technology, non-toxicity, long life, low cost, etc.…”

Section: Introductionmentioning

confidence: 99%

Broadband Sensitized Near‐Infrared Quantum Cutting Materials for Silicon Solar Cells: Progress, Challenges, and Perspectives

Song,

Lou,

Diao

et al. 2024

Solar RRL

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Silicon solar cells are currently the most widely used type, accounting for more than 90% of the commercial market. However, the spectral mismatch between the solar spectrum and the absorption spectra of the cells is the main cause restricting their conversion efficiency, which can not exceed the Shockley‐Queisser limit. Quantum cutting can convert one high‐energy photon into two or more low‐energy photons and reduce the energy loss of the high‐energy photons, providing a way to improve the photoelectric conversion efficiency (PCE) of silicon solar cells. The unique electronic configuration of rare‐earth elements gives them excellent optical properties and makes them good candidates for the luminescent centers of quantum cutting materials. This paper reviews their luminescence mechanism, energy transfer (ET) mechanism, and application in silicon solar cells and outlines the potential problems of broadband‐sensitized NIR quantum cutting materials. Some key issues and future directions are also discussed.This article is protected by copyright. All rights reserved.

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The nonhalides in perovskite solar cells

Abstract: Recently, the halide perovskites solar cells (PSCs) have accomplished the most remarkable progress in the emerging photovoltaic technology. However, their poor stability hinders the way of commercialization. Notably, the high...

Cited by 8 publications

References 107 publications

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

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

Ammonium Additive Engineering in Antisolvents for Improving Perovskite/Charge-Transport-Layer Interfaces toward Efficient Lead–Tin Alloyed Perovskite Solar Cells

Broadband Sensitized Near‐Infrared Quantum Cutting Materials for Silicon Solar Cells: Progress, Challenges, and Perspectives

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