Post-treatment of Perovskite Films toward Efficient Solar Cells via Mixed Solvent Annealing

Tian, Liuwen; Zhang, Wenfeng; Yu, Hua; Peng, Changtao; Mao, Hanying; Li, Yuepeng; Wang, Qiyun; Huang, Yuelong

doi:10.1021/acsaem.9b00613

Cited by 28 publications

(29 citation statements)

References 66 publications

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“…Solvent annealing for crystalline modulation is achieved by the addition of polar solvent vapor to the annealing [130][131][132][133][134][135][136][137]. Solvent annealing (SA) was first introduced to the perovskite crystallization by Huang et al [21].…”

Section: Solvent Annealingmentioning

confidence: 99%

“…The concentration of DMF vapor needed to be reasonably controlled, as the excessive DMF vapor was a challenge to the photovoltaic performance of the film [141]. DMF and DMSO have already become the most widely considered choices in many solvents due to their significant dissolution-recrystallization effects and their ease of removal from perovskite films [126,132,134,[139][140][141][142][143][144]. DMSO solvent annealing also had an excellent ability to form grains with low defect density.…”

Section: Solvent Annealingmentioning

confidence: 99%

“…The synergistic annealing of various solvents further improved the effect of single solvent annealing. A small amount DMSO added into DMF could regulate the growth by forming MAI-PbI 2 -DMSO intermediate phases with strong Lewis basicity, allowing extensive incorporation and the disappearance of grain boundaries [134]. Compared to single IPA or DMF annealing, mixed solvent annealing of DMF and IPA was superior in improving device stability and eliminating hysteresis effects [132].…”

Section: Solvent Annealingmentioning

confidence: 99%

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Annealing Engineering in the Growth of Perovskite Grains

Wang

Liu

et al. 2022

Crystals

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Perovskite solar cells (PSCs) are a promising and fast-growing type of photovoltaic cell due to their low cost and high conversion efficiency. The high efficiency of PSCs is closely related to the quality of the photosensitive layer, and the high-quality light absorbing layer depends on the growth condition of the crystals. In the formation of high-quality crystals, annealing is an indispensable and crucial part, which serves to evaporate the solvent and drive the crystallization of the film. Various annealing methods have different effects on the promotion of the film growth process owing to the way they work. Here, this review will present a discussion of the growth puzzles and quality of perovskite crystals under different driving forces, and then explain the relationship between the annealing driving force and crystal growth. We divided the main current annealing methods into physical and chemical annealing, which has never been summarized before. The main annealing methods currently reported for crystal growth are summarized to visualize the impact of annealing design strategies on photovoltaic performance, while the growth mechanisms of thin films under multiple annealing methods are also discussed. Finally, we suggest future perspectives and trends in the industrial fabrication of PSCs in the future. The review promises industrial manufacturing of annealed PSCs. The review is expected to facilitate the industrial fabrication of PSCs.

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Section: Solvent Annealingmentioning

confidence: 99%

Section: Solvent Annealingmentioning

confidence: 99%

Section: Solvent Annealingmentioning

confidence: 99%

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Annealing Engineering in the Growth of Perovskite Grains

Wang

Liu

et al. 2022

Crystals

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“…Solvent annealing have been widely reported to increase the grain size of perovskite and enhance the performance of PSCs accordingly . N , N ‐Dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) are usually used in solvent annealing . However, there are still several challenges in controlling the solvent atmosphere because their strong polar property may destroy the perovskite films .…”

Section: The Performance Parameters Of Reference and Air‐retreated Dementioning

confidence: 99%

A Facile Air‐Retreatment Strategy for Efficient Inverted Perovskite Solar Cells

Dai

Xiong

Zhan

et al. 2020

Physica Rapid Research Ltrs

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A simple air‐retreatment strategy is proposed to improve the performance of the inverted perovskite solar cells (PSCs). This air‐retreatment impact on the physical properties and corresponding performance of the devices is systematically studied. The results show that the grain size of perovskite films is enhanced by this method, and the high quality of MAPbI3 films is successfully prepared. The average grain size of 3.91 μm and the largest grain size exceeding 9 μm are achieved, and the trap states are reduced from 4.05 × 1016 cm−3 to 1.60 × 1016 cm−3. Benefitted by the relatively larger grain size, lower trap density, and higher crystallinity, a high power conversion efficiency (PCE) of 18.44% and negligible hysteresis are obtained. This air‐retreatment strategy has great potential in the large‐scale, low‐temperature preparation of efficient and stable PSCs.

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“…[ 15–17 ] Controlling of crystal growth is one of the most common methods of improving the quality of perovskite films, such as anti‐solvent method, sequential deposition process, solvent engineering, and post‐treatment. [ 18–20 ] Among them, solvent‐annealing treatment is an effective post‐treatment method for fabricating perovskite films. [ 21 ] Huang and co‐workers first used the “solvent annealing” method to enhance organometal trihalide perovskite films.…”

Section: Introductionmentioning

confidence: 99%

Dual Interfacial Modification Engineering for Highly Efficient and Stable Perovskite Solar Cells

Liu

Sun

et al. 2021

Solar RRL

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Although the research on perovskite solar cells (PSCs) has achieved rapid progress, its efficiency and stability still need to be further improved to meet the industrial requirements. The defects located inside the cells, on the surfaces, interfaces, or grain boundaries, will primarily affect carrier transportation through the formation of nonradiative recombination centers and hinder the further enhancement of the power conversion efficiency (PCE). Herein, a straightforward and simple defect passivation method is developed to increase the PCE and stability of PSCs. In the device, the N‐type semiconductor AgBiS2 is introduced by thermal evaporation as a modified layer between the perovskite films and electron transport layer, which can improve the charge transport characteristic and bandgap optimization of PSCs. Simultaneously, dimethyl sulfoxide (DMSO) solvent mixed polyethylene glycol (PEG) is used for solvent annealing treatment, which can further improve the quality of perovskite film and reduce the trap density by increasing grain size and enhancing the crystallinity. As a result, the PSCs with dual‐interfacial modification exhibit a remarkable improvement in PCE from 18.58% to 21.19% with exceptional long‐term and moisture stability. This work provides an innovative insight for fabricating the stable and efficient PSCs toward the industrialization.

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Post-treatment of Perovskite Films toward Efficient Solar Cells via Mixed Solvent Annealing

Cited by 28 publications

References 66 publications

Annealing Engineering in the Growth of Perovskite Grains

Annealing Engineering in the Growth of Perovskite Grains

A Facile Air‐Retreatment Strategy for Efficient Inverted Perovskite Solar Cells

Dual Interfacial Modification Engineering for Highly Efficient and Stable Perovskite Solar Cells

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