Artemisinin-passivated mixed-cation perovskite films for durable flexible perovskite solar cells with over 21% efficiency

Yang, Longkai; Xiong, Qiu; Li, Yanbo; Gao, Peng; Xu, Ben; Lin, Hong; Li, Xin; Miyasaka, Tsutomu

doi:10.1039/d0ta10717d

Cited by 144 publications

(125 citation statements)

References 49 publications

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“…demonstrated flexible PSCs on PET with a PCE of 18.5% [ 144 ], and the efficiency was improved to 21.1% by Yang et al. based on PEN substrate [ 145 ]. Colorless polyimide (CPI), having a much higher thermal tolerance than that of PET and PEN, has been used as another alternative substrate for flexible PSCs [ 146 ].…”

Section: R2r Scaling-upmentioning

confidence: 99%

Printing strategies for scaling-up perovskite solar cells

Wang

Duan

et al. 2021

National Science Review

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Photovoltaic technology offers a sustainable solution to the problem of soaring global energy demands. Recently, metal halide perovskite solar cells (PSCs) have attracted worldwide interest because of their high power conversion efficiency of 25.5% and great potential in becoming a disruptive technology in the photovoltaic industry. The transition from research to commercialization requires advancements of scalable deposition methods for both perovskite and charge transporting thin films. Herein, we share our view regarding the current challenges to fabrication of PSCs by printing techniques. We focus particularly on ink technologies, and summarize the strategies for printing uniform, pinhole-free perovskite films with good crystallinity. Moreover, the stability of perovskite solar modules is discussed and analyzed. We believe this review will be advantageous in the area of printable electronic devices.

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Section: R2r Scaling-upmentioning

confidence: 99%

Printing strategies for scaling-up perovskite solar cells

Wang

Duan

et al. 2021

National Science Review

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“…[6] Indeed, recent years have witnessed the rapid advance of f-PSCs with the highest PCE exceeding 20%, illustrating great commercial potentials for use in wearable electronics, intelligent vehicles, and building-integrated photovoltaics, etc. [7][8][9][10] Nevertheless, it should be noted that the efficiency of f-PSCs still lags far behind those of rigid devices. The major challenge originated from the difficulty to deposit uniform and pinholefree perovskite on flexible substrates, primarily due to the fact that crystallization dynamics on the high rough surface of polymeric substrates is more difficult to be controlled than on the rigid glass.…”

Section: Introductionmentioning

confidence: 99%

An Embedding 2D/3D Heterostructure Enables High‐Performance FA‐Alloyed Flexible Perovskite Solar Cells with Efficiency over 20%

Wang

et al. 2021

Advanced Science

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Flexible perovskite solar cells (f-PSCs) have attracted increasing attention because of their enormous potential for use in consumer electronic devices.The key to achieve high device performance is to deposit pinhole-free, uniform and defect-less perovskite films on the rough surface of polymeric substrates. Here, a solvent engineering to tailor the crystal morphology of FA-alloyed perovskite films prepared by one-step blade coating is first deployed. It is found that the use of binary solvents DMF:NMP, rather than the conventional DMF:DMSO, enables to deposit dense and uniform FA-alloyed perovskite films on both the rigid and flexible substrates. As a decisive step, an embedding 2D/3D perovskite heterostructure is in situ formed by incorporating a small amount of 4-guanidinobutanoic acid (GBA). Accordingly, photovoltage increases up to 100 mV are realized due to the markedly suppressed nonradiative recombination, leading to high efficiencies of 21.45% and 20.16% on the rigid and flexible substrates, respectively. In parallel, improved mechanical robustness of the flexible devices is achieved due to the presence of the embedded 2D phases. The results underpin the importance of morphology control and defect passivation in delivering high-performance flexible FA-alloyed flexible perovskite devices.

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“…Perovskite composition engineering, [ 12 ] crystalline engineering, [ 13 ] and interfacial engineering have been developed to improve the PCEs of f‐PSCs. [ 14,15 ] For example, Cao and co‐workers improved the PCE of f‐PSCs to 19.1% by using a novel quintile monovalent cation combining with interface passivation with HfO 2 . [ 12 ] Lei and co‐workers invented a solution‐based lithography‐assisted epitaxial‐growth‐and‐transfer process, and fabricated high‐quality single‐crystal hybrid perovskites on arbitrary substrate conveniently with controllable thickness and area, leading to f‐PSCs with a PCE of 20.04% and improved stability.…”

Section: Introductionmentioning

confidence: 99%

“…[ 13 ] Very recently, a record PCE as high as 21.1% was achieved by incorporation of artemisinin into perovskite film to reduce trap density and nonradiative recombination, confirming a bright future of f‐PSCs. [ 15 ] Although the PCEs of f‐PSCs have been dramatically improved, there is still a large gap between the PCEs of f‐PSCs and rigid PSCs. Besides, f‐PSCs show worse stability compared with rigid PSCs due to the internal strains and deformation of the flexible substrates during the annealing process, leading to increased defects in perovskite films.…”

Section: Introductionmentioning

confidence: 99%

Creating a Dual‐Functional 2D Perovskite Layer at the Interface to Enhance the Performance of Flexible Perovskite Solar Cells

Long

Huang

Chang

et al. 2021

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Flexible perovskite solar cells (f‐PSCs) have been attracting tremendous attention due to their potentially commercial prospects in flexible energy system and mobile energy system. Reducing the energy barriers and charge extraction losses at the interfaces between perovskite and charge transport layers is essential to improve both efficiency and stability of f‐PSCs. Herein, 4‐trifluoromethylphenylethylamine iodide (CF3PEAI) is introduced to form a 2D perovskite at the interface between perovskite and hole transport layer (HTL). It is found that the 2D perovskite plays a dual‐functional role in aligning energy band between perovskite and HTL and passivating the traps in the 3D perovskite, thus reducing energy loss and charge carrier recombination at the interface, facilitating the hole transfer from perovskite to the Spiro‐OMeTAD. Consequently, the photovoltaic performance of f‐PSCs is significantly improved, leading to a power conversion efficiency (PCE) of 21.1% and a certified PCE of 20.5%. Furthermore, the long‐term stability of f‐PSCs is greatly improved through the protection of 2D perovskite layer to the underlying 3D perovskite. This work provides an excellent strategy to produce efficient and stable f‐PSCs, which will accelerate their potential applications.

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Artemisinin-passivated mixed-cation perovskite films for durable flexible perovskite solar cells with over 21% efficiency

Abstract: The strong coordination between artemisinin molecules and exposed Pb2+ ions reduces the perovskite crystal's defects and alleviates Pb clusters, resulting in high-performance flexible perovskite solar cells.

Cited by 144 publications

References 49 publications

Printing strategies for scaling-up perovskite solar cells

Printing strategies for scaling-up perovskite solar cells

An Embedding 2D/3D Heterostructure Enables High‐Performance FA‐Alloyed Flexible Perovskite Solar Cells with Efficiency over 20%

Creating a Dual‐Functional 2D Perovskite Layer at the Interface to Enhance the Performance of Flexible Perovskite Solar Cells

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