Favorable growth of well-crystallized layered hybrid perovskite by combination of thermal and solvent assistance

Cai-yun, Xue; Shi, Yantao; Zhang, Chunyang; Lv, Yanping; Feng, Yansong; Tian, Wenming; Jin, Shengye; Ma, Tingli

doi:10.1016/j.jpowsour.2019.03.037

Cited by 15 publications

(17 citation statements)

References 43 publications

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“…To this end, researchers have developed a completely new post-annealing technology based on 2D perovskite preparation. [137] During the hot-casting process, the substrate temperature will rapidly cool down during the high-speed rotation process, which will cause the crystallization process to stop. Zhang and co-workers [138] developed a preparation method of combining hot-casting and post-annealing.…”

Section: Post-annealingmentioning

confidence: 99%

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Crystallization Kinetics in 2D Perovskite Solar Cells

Wang

Lei

et al. 2020

Advanced Energy Materials

143

124

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volatile decomposition [23] or halide segregation are often observed in hybrid perovskites under various stress conditions (light, [24] thermal, [25] and electric fields [26]); 4) spontaneous phase transition easily occurs for perovskite with unstable crystal structures, particularly for inorganic perovskite. [27-29] To improve the stability of PSCs, researchers attempted numerous methods such as encapsulation, [30] additive engineering, [31] component engineering, [32] etc. [33] However, the PSCs' stability is yet to achieve a perfect solution. Recently, researchers found that the introduction of long-chain organic cations in 3D perovskite as 2D perovskite can block water and oxygen molecules, meanwhile, generate a steric effect to prevent phase transitions, and limit ion migration. [34-36] Hence, fabricating 2D [37,38] or 2D/3D [39-43] mixed perovskite as absorbing layers are effective approaches to improve the stability of PSCs. However, the PCE of 2D PSCs remain lower than that of the 3D ones, which is mainly attributed to the introduction of organic macromolecules that blocks the effective extraction and transport of carriers. [44,45] Fortunately, 2D perovskite usually has three arrangements, namely parallel, perpendicular to the glass substrate or randomly arranged. [46] Manipulating the orientation of the crystal and the phase distribution in the 2D solution-processed perovskite can improve the efficiency and reproducibility of the device. Among them, the most desired arrangement for PSCs is the one that perpendicular to the substrate. Therefore, studying the crystallization kinetics of 2D perovskite is curial to effectively control the film forming process and adjust the crystal orientation (perpendicular to the substrate), which can effectively avoid or reduce the adverse effects of the organic molecular layer and improve device efficiency. [47,48] Nevertheless, few review articles were published on this subject. In this review, we mainly focus on the key issue for controlling crystallization kinetics and summarizing the research progress of their effects on various types of 2D PSCs. We also discuss the crystal/natural quantum well (QW) structure and the original stability for 2D PSCs in detail. Finally, remaining challenges and outlooks are presented. 2. Crystal and Natural Quantum Well Structure The material structure has a substantial impact on performance. [49-51] Properties of 2D and 3D perovskites differ 2D perovskites demonstrate higher moisture stability, oxygen content, thermal stability, and a significantly lower ion migration/phase transition occurrence in comparison to 3D perovskite. These advantages imply huge potential for 2D perovskite in commercial applications in the photovoltaic field. However, the horizontal arrangement of the organic layer severely hinders the transport of carriers, and thus, the power conversion efficiency of 2D perovskite solar cells (PSCs) is significantly lower than that of 3D. Controlling the crystallization orientation to achieve rapid carrier transport can effe...

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Section: Post-annealingmentioning

confidence: 99%

“…To this end, researchers have developed a completely new post‐annealing technology based on 2D perovskite preparation. [ 137 ]…”

Section: Crystallization Kineticsmentioning

confidence: 99%

Crystallization Kinetics in 2D Perovskite Solar Cells

Wang

Lei

et al. 2020

Advanced Energy Materials

143

124

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“…However, if the annealing temperature is too high and the annealing time is too long, it will promote the decomposition of the perovskite and eventually damage the photovoltaic performance. Ma et al investigated the relationship between the thermal annealing and orientation of hot-casted PEA 2 MA 2 Pb 3 I 10 films [ 38 ]. Nateghi et al also reported that the changes in annealing temperature and substrate temperature affect the morphology of the deposited film [ 39 ].…”

Section: Hot-casting Technologymentioning

confidence: 99%

Hot-Casting Large-Grain Perovskite Film for Efficient Solar Cells: Film Formation and Device Performance

Liao

Xie

et al. 2020

Nano-Micro Lett.

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Organic–inorganic metal halide perovskite solar cells (PSCs) have recently been considered as one of the most competitive contenders to commercial silicon solar cells in the photovoltaic field. The deposition process of a perovskite film is one of the most critical factors affecting the quality of the film formation and the photovoltaic performance. A hot-casting technique has been widely implemented to deposit high-quality perovskite films with large grain size, uniform thickness, and preferred crystalline orientation. In this review, we first review the classical nucleation and crystal growth theory and discuss those factors affecting the hot-casted perovskite film formation. Meanwhile, the effects of the deposition parameters such as temperature, thermal annealing, precursor chemistry, and atmosphere on the preparation of high-quality perovskite films and high-efficiency PSC devices are comprehensively discussed. The excellent stability of hot-casted perovskite films and integration with scalable deposition technology are conducive to the commercialization of PSCs. Finally, some open questions and future perspectives on the maturity of this technology toward the upscaling deposition of perovskite film for related optoelectronic devices are presented.

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“…There are several crystallization control methods including hot‐casting technique, [ 6,8–11 ] solvent engineering, [ 12–15 ] antisolvent method, and so on. [ 16–20 ]…”

Section: Introductionmentioning

confidence: 99%

“…[ 6 ] Ma and coworkers demonstrated that the annealing temperature directly affects the orientation of hot‐casted 2D perovskite (PEA 2 MA 2 Pb 3 I 10 ) films. [ 17 ] Nateghi et al also studied the effect of annealing temperature and substrate temperature on the morphology of the deposited film. [ 18 ] A new annealing method, i.e., the Flash infrared annealing, is proposed to promote the crystallization of perovskite films through rapid solvent evaporation.…”

Section: Introductionmentioning

confidence: 99%

Manipulating Perovskite Precursor Solidification toward 21% Pristine MAPbI₃ Solar Cells

Guo

Liu

et al. 2021

Solar RRL

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Controlling the crystallization of perovskite film is critical for high‐performance perovskite solar cells (PVSCs), and temperature is the key factor dominating the nucleation and crystal growth. Herein, it is demonstrated that the inconspicuous ambient temperature plays an important role in reaching high‐quality perovskite film and high‐performance PVSCs. It is observed that the ambient temperature greatly affects the composition of as‐prepared perovskite film, which dramatically influences the perovskite film morphology during the subsequent annealing process. Remarkably, the device prepared at the optimal ambient temperature of 29 °C exhibits the best power conversion efficiency of 20.91% with little hysteresis. This represents one of the best results for inverted PVSCs based on pristine MAPbI3 system. In addition, the PVSC prepared at 29 °C shows good stability with 80% of its initial efficiency after 30d in air with a humidity of 45%. Overall, the importance of ambient temperature for crystallization of the perovskite film is emphasized, and this work should have implications for controlling the morphology for high‐performance PVSCs.

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Favorable growth of well-crystallized layered hybrid perovskite by combination of thermal and solvent assistance

Cited by 15 publications

References 43 publications

Crystallization Kinetics in 2D Perovskite Solar Cells

Crystallization Kinetics in 2D Perovskite Solar Cells

Hot-Casting Large-Grain Perovskite Film for Efficient Solar Cells: Film Formation and Device Performance

Manipulating Perovskite Precursor Solidification toward 21% Pristine MAPbI₃ Solar Cells

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Favorable growth of well-crystallized layered hybrid perovskite by combination of thermal and solvent assistance

Cited by 15 publications

References 43 publications

Crystallization Kinetics in 2D Perovskite Solar Cells

Crystallization Kinetics in 2D Perovskite Solar Cells

Hot-Casting Large-Grain Perovskite Film for Efficient Solar Cells: Film Formation and Device Performance

Manipulating Perovskite Precursor Solidification toward 21% Pristine MAPbI3 Solar Cells

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Product

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About

Manipulating Perovskite Precursor Solidification toward 21% Pristine MAPbI₃ Solar Cells