Controllable Two-dimensional Perovskite Crystallization via Water Additive for High-performance Solar Cells

Liu, Ziji; Zheng, Hualin; Liu, Detao; Liang, Zhiqing; Yang, Wei; Chen, Hao; Ji, Long; Yuan, Shihao; Gu, Yiding; Li, Shibin

doi:10.1186/s11671-020-03338-5

Cited by 10 publications

(8 citation statements)

References 49 publications

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“…The as-grown film has an increased grain size of the 2D planes, improved surface quality, reduced trap-state density, and enhanced charge-carrier mobility and charge transfer kinetics, thus leading to solar cells with a high PCE of 13.7% and negligible hysteresis . The use of deionized water as an additive has also been shown to enable the growth of high-quality 2D/quasi-2D perovskite films . In addition, KI and DMSO were simultaneously incorporated by Tang et al to produce a synergistic effect on both the film quality and the orientation of 2D/quasi-2D perovskites .…”

Section: Advancements In Optoelectronics Based On Oriented Halide Per...mentioning

confidence: 99%

Oriented Halide Perovskite Nanostructures and Thin Films for Optoelectronics

et al. 2021

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Oriented semiconductor nanostructures and thin films exhibit many advantageous properties, such as directional exciton transport, efficient charge transfer and separation, and optical anisotropy, and hence these nanostructures are highly promising for use in optoelectronics and photonics. The controlled growth of these structures can facilitate device integration to improve optoelectronic performance and benefit in-depth fundamental studies of the physical properties of these materials. Halide perovskites have emerged as a new family of promising and cost-effective semiconductor materials for next-generation highpower conversion efficiency photovoltaics and for versatile high-performance optoelectronics, such as light-emitting diodes, lasers, photodetectors, and high-energy radiation imaging and detectors. In this Review, we summarize the advances in the fabrication of halide perovskite nanostructures and thin films with controlled dimensionality and crystallographic orientation, along with their applications and performance characteristics in optoelectronics. We examine the growth methods, mechanisms, and fabrication strategies for several technologically relevant structures, including nanowires, nanoplates, nanostructure arrays, single-crystal thin films, and highly oriented thin films. We highlight and discuss the advantageous photophysical properties and remarkable performance characteristics of oriented nanostructures and thin films for optoelectronics. Finally, we survey the remaining challenges and provide a perspective regarding the opportunities for further progress in this field.

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Section: Advancements In Optoelectronics Based On Oriented Halide Per...mentioning

confidence: 99%

Oriented Halide Perovskite Nanostructures and Thin Films for Optoelectronics

et al. 2021

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“…2 e, all films show two distinctive diffraction peaks at around 14.5° and 28.4°, which can be assigned to (111) and (202) crystallographic planes, respectively. Previous studies have suggested that both the (111) and (202) orientation allow the [(MA) n −1 Pb n I 3 n +1 ] 2− slabs grow in vertical alignment to the PEDOT:PSS/ITO substrate [ 13 , 23 , 24 ]. Therefore, limited replacement of iodine with bromine is conducive to the formation of vertically oriented 2D perovskite film, as evidenced by the preferred intensity increase in the (111) and (202) peaks [ 48 ].…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, limited replacement of iodine with bromine is conducive to the formation of vertically oriented 2D perovskite film, as evidenced by the preferred intensity increase in the (111) and (202) peaks [ 48 ]. The vertical oriented 2D perovskite film allows more efficient transport of photon-induced carriers, improving photovoltaic performance of PVSC [ 23 , 24 ]. On the one hand, the diffraction peaks at around 14.5° and 28.4° both become stronger upon the incorporation of bromine, suggesting the enhanced crystallinity of the perovskite film.…”

Section: Resultsmentioning

confidence: 99%

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Stable High-Efficiency Two-Dimensional Perovskite Solar Cells Via Bromine Incorporation

Feng

Yang

et al. 2020

Nanoscale Res Lett

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Two-dimensional (2D) organic-inorganic perovskites as one of the most important photovoltaic material used in solar cells have attracted remarkable attention. These 2D perovskites exhibit superior environmental stability and wide tunability of their optoelectronic properties. However, their photovoltaic performance is far behind those of traditional three-dimensional (3D) perovskites. In this work, we demonstrate the power conversion efficiency (PCE) of 2D perovskite solar cells (PVSCs) is greatly improved from 3.01% for initial to 12.19% by the incorporation of PbBr2. The enhanced efficiency is attributed to superior surface quality, enhanced crystallinity, and the resulting reduced trap-state density. Furthermore, PbBr2 incorporated devices without encapsulation show excellent humidity stability, illumination stability, and thermal stability. This work provides a universal and viable avenue toward efficient and stable 2D PVSCs.

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“…Compared to the DMF solvent, water additive can regulate the crystallization process of perovskite because of its lower boiling point and higher vapor pressure. 161 However, the amount of water additive should be carefully controlled. Voids and cracks can be formed when the water content is over 5%, which is mainly due to the decomposition of the hydrate perovskite caused by excessive water.…”

Section: Toxicity Problem and Stability Issuementioning

confidence: 99%

Structural modulation and assembling of metal halide perovskites for solar cells and light‐emitting diodes

Liu

Zhang

Lin

et al. 2021

InfoMat

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Metal halide perovskites possess appealing optoelectronic properties and have been widely applied for solar energy harvesting and light emitting. Although perovskite solar cells (PeSCs) and perovskite light-emitting diodes (PeLEDs) have been developed rapidly in recent years, there are still no universal rules for the selection of perovskites to achieve high-performance optoelectronic devices. In this review, the working mechanisms of PeSCs and PeLEDs are first demonstrated with the discussion on the factors which determine the device performance. We then examine the optoelectronic properties of perovskites with structures modulated from 3D, 2D, 1D to 0D, and analyze the corresponding structure-property relationships in terms of photo-electric and electric-photo conversion processes. Based on the unique optoelectronic properties of structurally modulated perovskites, we put forward the concept of structural assembling engineering that integrate the merits of different types of perovskites within one matrix and elaborate their excellent properties for applications of both PeSCs and PeLEDs. Finally, we discuss the potential challenges and provide our perspectives on the structural assembling engineering of perovskites for future optoelectronic applications.

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Controllable Two-dimensional Perovskite Crystallization via Water Additive for High-performance Solar Cells

Cited by 10 publications

References 49 publications

Oriented Halide Perovskite Nanostructures and Thin Films for Optoelectronics

Oriented Halide Perovskite Nanostructures and Thin Films for Optoelectronics

Stable High-Efficiency Two-Dimensional Perovskite Solar Cells Via Bromine Incorporation

Structural modulation and assembling of metal halide perovskites for solar cells and light‐emitting diodes

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