Enhanced efficiency and stability of scalable spray-coated perovskite solar cells with ionic liquid additives

Yang, S. L.; Tsai, Chien-Hung; Lee, Tai Chou; Liu, Chengliang

doi:10.1039/d2se01043g

Cited by 4 publications

(4 citation statements)

References 62 publications

(100 reference statements)

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“…Moreover, they used vacuumassisted extraction after spraying, which accelerated the solvent evaporation process and enhanced the crystallinity (Figure 10b). [88] As a result, the BMIMBF 4 -modified perovskite film (5 Â 10 cm 2 ) was cut into eight samples and achieved a consistent device performance with a PCE of 14.83 AE 0.62%.…”

Section: Ionic Liquids For Perovskite Solar Modulesmentioning

confidence: 99%

“…Reproduced with permission. [88] Copyright 2022, Royal Society of Chemistry. c) Schematic of the transfer/leveling procedure during the formation of perovskite thin films by means of the screenprinting process, and the schematic of the thermal annealing deposition of wet perovskite thin films.…”

Section: Ionic Liquids For Perovskite Solar Modulesmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Role of Ionic Liquids in Perovskite Solar Cells

Zhang

Brooks

et al. 2023

Solar RRL

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Although the power conversion efficiency of perovskite solar cells (PSCs) has reached 25.7%, there is still great potential for improvement in their performance and stability. In the past few years, ionic liquids (ILs) have been extensively investigated and demonstrated to enhance the efficiency and stability of devices substantially. Herein, the role of ILs in PSCs as additives, solvents, interface engineering, and charge transport layer is reviewed. Also, this review will guide the researchers in understanding bulk doping and interface engineering for efficient and stable PSCs.

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Section: Ionic Liquids For Perovskite Solar Modulesmentioning

confidence: 99%

Section: Ionic Liquids For Perovskite Solar Modulesmentioning

confidence: 99%

See 1 more Smart Citation

Role of Ionic Liquids in Perovskite Solar Cells

Zhang

Brooks

et al. 2023

Solar RRL

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“…Through strong interactions with both cations and anions, BMIMBF 4 can effectively passivate non-lattice Pb defects and improve morphology. [31][32][33] Moreover, the IL pre-treatment facilitates hole injection into PeLEDs by adjusting the energy levels of the perovskite emissive layers. In addition, we introduce an innovative micro-patterning process with wide applicability using template layer transfer to fabricate a micro-patterned perovskite array.…”

Section: Introductionmentioning

confidence: 99%

High‐Performance Blue Perovskite Films and Micro‐Arrays for Light‐Emitting Diodes with Ionic Liquid Interlayer

Kim,

Sadhukhan,

Myoung

2023

Adv Funct Materials

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Metal halide perovskites have attracted considerable attention for light‐emitting diode (LED) applications due to their desirable optoelectronic properties including high brightness and color purity. However, the performance of blue perovskite LEDs (PeLEDs) remains inferior to their red and green counterparts. Herein, an ionic liquid (IL), specifically 1‐butyl‐3‐methylimidazolium tetrafluoroborate is introduced as the interlayer on the hole transport layer (HTL). This IL demonstrates a strong interaction with the perovskite emissive layer, resulting in effective defect passivation and a shallower valence band maximum. Consequently, nonradiative recombination is reduced, and hole injection is enhanced. Additionally, a soft lithography method employing a transfer process is successfully developed that enables precise micropatterning of the perovskite light‐emitting layer. Through these advancements, the IL‐modified PeLED exhibits pure blue emission at 470 nm with a maximum luminance of 891 cd m−2 and an impressive maximum EQE of 8.3%. Furthermore, the micro PeLED with an IL interlayer achieves a maximum luminance of 400 cd m−2 and a maximum EQE of 3.9%.

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Perovskite‐Like Liquid‐Crystalline Materials Based on Polyfluorinated Imidazolium Cations

Stergiou,

Leccioli,

Ricci

et al. 2024

Angewandte Chemie

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Hybrid Organic‐Inorganic Halide Perovskites (HOIHPs) represent an emerging class of semiconducting materials, widely employed in a variety of optoelectronic applications. Despite their skyrocket growth in the last decade, a detailed understanding on their structure‐property relationships is still missing. In this communication, we report two unprecedented perovskite‐like materials based on polyfluorinated imidazolium cations. The two materials show thermotropic liquid crystalline behavior resulting in the emergence of stable mesophases. The manifold intermolecular F⋅⋅⋅F interactions are shown to be meaningful for the stabilization of both the solid‐ and liquid‐crystalline orders of these perovskite‐like materials. Moreover, the structure of the incorporated imidazolium cation was found to tune the properties of the liquid crystalline phase. Collectively, these results may pave the way for the design of a new class of halide perovskite‐based soft materials.

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Enhanced efficiency and stability of scalable spray-coated perovskite solar cells with ionic liquid additives

Abstract: The scaling up of perovskite films to generate prototypes with large surface area requires the development of scalable solution-processing techniques along with the optimization of precursor solution formulations to achieve...

Cited by 4 publications

References 62 publications

Role of Ionic Liquids in Perovskite Solar Cells

Role of Ionic Liquids in Perovskite Solar Cells

High‐Performance Blue Perovskite Films and Micro‐Arrays for Light‐Emitting Diodes with Ionic Liquid Interlayer

Perovskite‐Like Liquid‐Crystalline Materials Based on Polyfluorinated Imidazolium Cations

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