Organic‐Inorganic Halide Perovskites: From Crystallization of Polycrystalline Films to Solar Cell Applications

Gao, Lili; Yang, Guan-Jun

doi:10.1002/solr.201900200

Cited by 53 publications

(43 citation statements)

References 222 publications

(240 reference statements)

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“…It has been reported that the film fabrication method and film quality (surface uniformity, crystallinity, phase purity) play a critical role in device performance. 22 Moreover, the polycrystalline perovskite films suffer from severe instabilities arising the from morphological disorder at grain boundaries and surface degradation under ambient conditions, which can increase the recombination of the excited carriers. 23 , 24 In turn, perovskite single crystals (SCs) have been demonstrated to surmount these challenges because of exceptional optoelectronic properties such as low trap density, low intrinsic carrier concentration, high mobility, and long diffusion length.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Growth of Single-Crystal Perovskites for Photovoltaic Applications

et al. 2021

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The growth of high-quality single-crystal (SC) perovskite films is a great strategy for the fabrication of defect-free perovskite solar cells (PSCs) with photovoltaic parameters close to the theoretical limit, which resulted in high efficiency and superior stability of the device. Plenty of growth methods for perovskite SCs are available to achieve a maximum power conversion efficiency (PCE) surpassing 21% for SC-based PSCs. However, there is still a lot of room to further push the efficiency by considering new crystal growth techniques, interface engineering, passivation approaches, and additive engineering. In this review, we summarize the recent progress in the growth of SC-based perovskite films for the fabrication of high-efficiency and stable PSCs. We describe the impact of SC growth of perovskite films and their quality on the device performance and stability, compared with the commonly used polycrystalline perovskite films. In the last section, the challenges and potential of SCs in PSCs are also covered for future development.

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Section: Introductionmentioning

confidence: 99%

Recent Progress in Growth of Single-Crystal Perovskites for Photovoltaic Applications

et al. 2021

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“…[4,5] Among these strategies, morphology engineering of the active perovskite layer has emerged as a promising route towards enhancing the film crystallinity and performance of the resulting devices. [4][5][6][7] Although in the field of photovoltaics the use of polycrystalline perovskite layers can still yield cells with high power conversion efficiency, [8] the situation is…”

Section: Doi: 101002/adma202003137mentioning

confidence: 99%

Ruddlesden–Popper‐Phase Hybrid Halide Perovskite/Small‐Molecule Organic Blend Memory Transistors

et al. 2020

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Controlling the morphology of metal halide perovskite layers during processing is critical for the manufacturing of optoelectronics. Here, a strategy to control the microstructure of solution‐processed layered Ruddlesden–Popper‐phase perovskite films based on phenethylammonium lead bromide ((PEA)2PbBr4) is reported. The method relies on the addition of the organic semiconductor 2,7‐dioctyl[1]benzothieno[3,2‐b]benzothiophene (C8‐BTBT) into the perovskite formulation, where it facilitates the formation of large, near‐single‐crystalline‐quality platelet‐like (PEA)2PbBr4 domains overlaid by a ≈5‐nm‐thin C8‐BTBT layer. Transistors with (PEA)2PbBr4/C8‐BTBT channels exhibit an unexpectedly large hysteresis window between forward and return bias sweeps. Material and device analysis combined with theoretical calculations suggest that the C8‐BTBT‐rich phase acts as the hole‐transporting channel, while the quantum wells in (PEA)2PbBr4 act as the charge storage element where carriers from the channel are injected, stored, or extracted via tunneling. When tested as a non‐volatile memory, the devices exhibit a record memory window (>180 V), a high erase/write channel current ratio (104), good data retention, and high endurance (>104 cycles). The results here highlight a new memory device concept for application in large‐area electronics, while the growth technique can potentially be exploited for the development of other optoelectronic devices including solar cells, photodetectors, and light‐emitting diodes.

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“…However, the V oc values of the prepared devices compared to the bandgap and reported studies are still very low. This may be because the coverage of the perovskite film fabricated via doctor blading still contains trance amounts of pinholes, which degrade V oc [30,31]. The solvent extraction due to the heat treatment is not as efficient as the antisolvent route in spin coating.…”

Section: Optimization Of Coating Temperaturementioning

confidence: 99%

Surfactant-assisted doctor-blading-printed FAPbBr3 films for efficient semitransparent perovskite solar cells

Ying

Liu

Dou

et al. 2020

Front. Optoelectron.

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Organic-inorganic hybrid perovskite solar cells have generated wide interest due to the rapid development of their photovoltaic conversion efficiencies. However, the majority of the reported devices have been fabricated via spin coating with a device area of < 1 cm 2. In this study, we fabricated a wide-bandgap formamidinium lead bromide (FAPbBr 3) film using a cost-effective, high-yielding doctor-blade-coating process. The effects of different surfactants, such as l-α-phosphatidylcholine, polyoxyethylene sorbitan monooleate, sodium lauryl sulfonate, and hexadecyl trimethyl ammonium bromide, were studied during the printing process. Accompanying the optimization of the blading temperature, crystal sizes of over 10 mm and large-area perovskite films of 5 cm Â 5 cm were obtained using this method. The printed FAPbBr 3 solar cells exhibited a short-circuit current density of 8.22 mA/cm 2 , an open-circuit voltage of 1.175 V, and an efficiency of 7.29%. Subsequently, we replaced the gold with silver nanowires as the top electrode to prepare a semitransparent perovskite solar cell with an average transmittance (400-800 nm) of 25.42%, achieving a highpower efficiency of 5.11%. This study demonstrates efficient doctor-blading printing for preparing large-area FAPbBr 3 films that possess high potential for applications in building integrated photovoltaics.

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Organic‐Inorganic Halide Perovskites: From Crystallization of Polycrystalline Films to Solar Cell Applications

Cited by 53 publications

References 222 publications

Recent Progress in Growth of Single-Crystal Perovskites for Photovoltaic Applications

Recent Progress in Growth of Single-Crystal Perovskites for Photovoltaic Applications

Ruddlesden–Popper‐Phase Hybrid Halide Perovskite/Small‐Molecule Organic Blend Memory Transistors

Surfactant-assisted doctor-blading-printed FAPbBr3 films for efficient semitransparent perovskite solar cells

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