In order to minimize the environmental pollution and realize large-scale production, green chemicals are very necessary. In this work, we report the impact of ethyl acetate (EA) antisolvent treatment on the performance of fully air-fabricated planar perovskite solar cells (PSCs). The proposed spin-coating approach with the …
The defects at the surface and grain boundary of perovskite films are detrimental to constructing highly stable and efficient perovskite solar cells (Pero-SCs). Here, we propose a facile additive-associated antisolvent engineering (AAE) method to acquire high-quality perovskite films. The additives and antis
5 · The resultant perovskite solar cells deliver a power conversion efficiency of 25.7% (certified 25.04%) ... (Fig. 1c, d) using antisolvent vapor-assisted crystallization …
Additive and antisolvent engineering strategies are outstandingly efficient in enhancing perovskite quality, photovoltaic performance, and stability of perovskite solar cells (PSCs). In this work, an effective approach is applied by coupling the antisolvent mixture and multi-functional additive procedures, which is recognized as antisolvent …
Developing a facile method to prepare high-quality perovskite films without using the antisolvent technique is critical for upscaling production of perovskite solar cells (PVSCs). However, the as-prepared formamidinium (FA)-based perovskite films often exhibit poor film quality with high density of defects if antisolvent is not used, …
Fabricating perovskite films with a dominant crystal orientation is an effective path to realizing quasi-single-crystal perovskite film, which can eliminate the fluctuation of the electrical properties in films arising from grain-to-grain variations, and improve the performance of perovskite solar cells (PSCs). Perovskite (FAPbI 3) films …
Even though ZnO is commonly used as the ETL in the perovskite solar cell (PSC), the reactivity of perovskite deposited thereupon limits its performance. Herein, an ethylene diamine tetraacetic acid-complexed ZnO (E-ZnO) is successfully developed as a significantly improved electron selective layer (ESLs) in perovskite device.
Roll-to-roll gravure-printed flexible perovskite solar cells ...
Green-antisolvent-regulated distribution of p-type self ...
Antisolvent treatment increases the nucleus density during film formation to produce uniform and pinhole-free perovskite film, which facilitates improved solar cell …
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We found that the formation of an intermediate phase was heavily determined by the antisolvent''s polarity. Indeed, through judicious control of the antisolvent''s polarity, it was possible to form a pure intermediate phase, without a PbI 2 or perovskite phase. Upon
A high-quality α-phase formamidinium lead triiodide (α-FAPbI 3) absorber film is crucial for obtaining perovskite solar cells (PSCs) with outstanding power conversion efficiency (PCE) and stability.An antisolvent-free process exhibits attractive merits for PSC upscaling, while suffering limited solvent evaporation rate, causing substantial difficulty in …
Anti-solvent engineering to rapid purify PbI 2 for efficient ...
Developing a facile method to prepare high-quality perovskite films without using the antisolvent technique is critical for upscaling production of perovskite …
Roll-to-roll gravure-printed flexible perovskite solar cells ...
Even though ZnO is commonly used as the ETL in the perovskite solar cell (PSC), the reactivity of perovskite deposited thereupon limits its performance. Herein, an ethylene diamine tetraacetic acid-complexed ZnO (E-ZnO) is successfully developed as a significantly improved electron selective layer (ESLs) in perovskite device.
The quality of the photoactive film is a significant factor in determining the power conversion efficiency (PCE) and the stability of perovskite solar cells (PSCs).We report a simple upgraded antisolvent washing treatment using iodine modulation, which significantly improves the MAPbI 3 films with high crystallinity and chemical uniformity. A …
Although efficient solar cells based on this composition have been reported, many aspects related to the film formation of CsFA perovskites remain unclear. Herein, the influence of the antisolvent application rate on the properties and device performance of MA-free perovskite solar cells are investigated.
The process is generally applicable to improve the performance of solar cells using perovskite films with different compositions, as demonstrated on three different types of mixed halide perovskites. ... A Cryogenic Process for Antisolvent‐Free High‐Performance Perovskite Solar Cells by Ng and co-workers. How to get a video abstract for ...
Antisolvent assisted crystallization has been most widely applied in depositing high-quality perovskite thin films for efficient perovskite solar cells (PSCs). However, the toxicity of common antisolvents (chlorobenzene, toluene etc.) involved in perovskite processing raises serious environmental and health 2021 Green Chemistry Hot Articles
When using trifluorotoluene (TFT) to replace toluene and chlorobenzene as a novel antisolvent, we achieve a power conversion efficiency (PCE) of 20.3% under optimized …
Although the ideal perovskite with a cubic (Figure 1a) close-packed structure has a tolerance factor 0.9 < t < 1, the range of t which leads to the formation of stable 3D structures is between 0.76 and 1.13. [In particular, the A cation must be small enough to fit into the voids of the octahedral units to maintain the structural integrity of the 3D lattice.
High-quality perovskite polycrystalline thin films are generally achieved through antisolvent-assisted crystallization, a crucial process that facilitates desolvation. …
The best-performing antisolvent-treated perovskite solar cell achieves a scanned power conversion efficiency of 8.55%, which is an excellent efficiency for planar CsPbBr3 cells reported yet. This ...
Anti-solvent treatment assisted crystallization is currently one of the most widely used methods to obtain high-quality perovskite films ascribed to its great operability. However, choosing a proper anti-solvent toward high-quality perovskite film for perovskite solar cells (PSCs) remains elusive. In this study, we qualitatively evaluate the impact of …
Fabricating perovskite films using the antisolvent dripping method has gained significant attention recently due to its simplicity and scalability. Unfortunately, this approach often leads to uneven distribution of antisolvent across the entire surface of a large substrate, mainly for substrates area larger than 6.5 cm2. In this study, we compare …
A high-quality α-phase formamidinium lead triiodide (α-FAPbI3) absorber film is crucial for obtaining perovskite solar cells (PSCs) with outstanding power conversion efficiency (PCE) and stability. An antisolvent-free process exhibits attractive merits for PSC upscaling, while suffering limited solvent evapo
This review primarily discusses the impact of various green antisolvents on the fabrication of thin perovskite films and analyzes the main chemical characteristics of …
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