Paintable Carbon‐Based Perovskite Solar Cells with Engineered Perovskite/Carbon Interface Using Carbon Nanotubes Dripping Method

Ryu, Jaehoon; Lee, Kisu; Yun, Juyoung; Yu, Haejun; Lee, Jungsup; Jang, Jyongsik

doi:10.1002/smll.201701225

Cited by 100 publications

(78 citation statements)

References 34 publications

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“…Figure c shows that the reference PSC displays the smaller R rec value than that of Co 3 O 4 ‐PSC at the different bias, suggesting the lower recombination rates in the Co 3 O 4 ‐PSC compared to the reference PSC. The reduced carrier recombination rates will contribute to the higher FF and V oc in the Co 3 O 4 ‐PSC, resulting in the improved the performance of Co 3 O 4 ‐PSC. These are consistent with the results of the J – V and PL measurements in Figures and .…”

Section: Resultsmentioning

confidence: 99%

Promoting the Hole Extraction with Co₃O₄ Nanomaterials for Efficient Carbon‐Based CsPbI₂Br Perovskite Solar Cells

Zhou

Zhang

et al. 2019

Solar RRL

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Carbon‐based perovskite solar cells (PSCs) have gathered much attention due to their excellent thermal stability and low cost. However, the typically used hole‐conductor‐free PSCs based on carbon electrodes show the worst performance due to the serious charge recombination at the perovskite/carbon interface. In this work, the efficient and stable carbon‐based CsPbI2Br PSCs using Co3O4 as the hole transport material (HTM) are fabricated and their photoelectric properties are systematically investigated. It is found that the Co3O4 inorganic HTM effectively promotes photo‐generated charges separation and extraction, and suppresses charge recombination at the CsPbI2Br/carbon electrode interface, resulting in the improved photovoltaic performance. At the optimal Co3O4 concentration, the carbon‐based CsPbI2Br PSCs achieve the maximum efficiency of 11.21% with a negligible J–V hysteresis. This work provides a novel strategy to fabricate efficient and stable all‐inorganic PSCs.

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Section: Resultsmentioning

confidence: 99%

Promoting the Hole Extraction with Co₃O₄ Nanomaterials for Efficient Carbon‐Based CsPbI₂Br Perovskite Solar Cells

Zhou

Zhang

et al. 2019

Solar RRL

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“…The CNT paste was purchased from Carbon Nano-Material Technology Co., Ltd. and was mostly multiwalled CNTs. [164] Again, multiwalled CNTs and the perovskite layer were entangled together. [163] Jang and co-workers reported paintable carbon electrode-based perovskite solar cells using CNT dripping.…”

Section: Lead Organohalide Perovskite Solar Cellsmentioning

confidence: 99%

Single‐Walled Carbon Nanotubes in Emerging Solar Cells: Synthesis and Electrode Applications

Jeon

Xiang

Shawky

et al. 2018

Advanced Energy Materials

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years, because of growing concerns over the energy security. Among different types of photovoltaics, silicon solar cells give power conversion efficiencies (PCEs) of over 26% with excellent durability. This technology has already reached the market, and the products are readily available. However as recent technologies, such as flexible smartphones and IoT (internet of things), evolve into more versatile and portable electronics, there is a shift of demand from performance-centric technologies to versatility-oriented technologies. In other words, the paradigm is shifting to flexible, wearable, and light-weight electronic devices. Energy-generating devices are also following the same path. This means that the thin-film solar cell technologies, such as organic solar cells (OSCs) [1][2][3] and perovskite solar cells (PSCs), [4,5] are considered to be the wave of the future with their critical attributes of being ultrathin (<1 mm), light-weight, and solution-processable. [6] These emerging thin-film solar cells have the potential to equal or surpass the PCE of silicon solar cells while having major advantages in terms of production cost, enhanced design and a variety of new functionalities. Furthermore, tandem photovoltaics, [7] which are combined solar cells of PSCs, silicon solar cells, [8] or OSCs, [9,10] are another new and promising category for the future photovoltaic technology. Despite different names of solar cell types, the device structure is largely the same. They commonly share the typical configuration of one photoactive layer in the center, two charge selective layers above and below the active layer, and two electrodes at each end-at least one of which has to be transparent so that sunlight can pass through it. While there has been an intense efficiency race within the emerging thin-film solar cell community, less attention has been paid to other features, such as flexibility and stability. These traits can be enhanced by using new electrodes and charge-selective layers. Not only the functionalities but also photovoltaic performance is heavily dependent on the electrode and the charge-selective layers. Many scientists around the world, thus far, have focused on these layers by developing novel materials and modifying conventional materials to push the boundaries of current thin-film photovoltaic technology.Abundant and mechanically resilient carbon allotropes are composed of carbon atoms only, yet manifest different electronic properties depending on their configurations and arrangements. Of the carbon species, carbon nanotubes (CNTs) are promising materials to be incorporated into the thin-film solar cells owing to a wide range of properties ranging from conductors to semiconductors with different bandgaps based Emerging solar cells, namely, organic solar cells and perovskite solar cells, are the thin-film photovoltaics that have light to electricity conversion efficiencies close to that of silicon solar cells while possessing advantages in having additional functionalities, facile-processability, an...

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“…The feasible modification techniques for the perovskite layer involve solvent engineering, colloidal engineering, inorganic interlayer incorporation, crystallization engineering, and grain‐orientation engineering . The potential techniques for CCE layer modification include solvent effects, press transfer, porous structure, hot‐pressing, encapsulation, solvent dripping, solvent‐exchange methods, composite carbon layers, energy level alignment, and new carbon materials . In the tri‐interfacial‐structured PSC, the techniques for interface engineering involve modifications to the perovskite, CCE, or insulating layer.…”

Section: Carbon Counter Electrodes In the Perovskite Solar Cell (Psc)mentioning

confidence: 99%

“…Antisolvent dripping is a novel solvent engineering technology that enables the formation of an extremely uniform and dense perovskite layer . The Jang group reported a modified solvent engineering method for an efficient paintable CCE‐based PSC that involved the dripping of MWCNTs dispersed in chlorobenzene (CB) . As shown in Figure , this technique could form a bottom layer of perovskite and a hetero‐junction upper‐layer of MWCNTs and perovskite.…”

Section: Carbon Counter Electrodes In the Perovskite Solar Cell (Psc)mentioning

confidence: 99%

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Carbon Counter Electrodes in Dye‐Sensitized and Perovskite Solar Cells

Sun

Zhou

et al. 2019

Adv Funct Materials

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Developing highly effective and stable counter electrode (CE) materials to replace rare and expensive noble metals for dye‐sensitized and perovskite solar cells (DSC and PSC) is a research hotspot. Carbon materials are identified as the most qualified noble metal‐free CEs for the commercialization of the two photovoltaic devices due to their merits of low cost, excellent activity, and superior stability. Herein, carbonaceous CE materials are reviewed extensively with respect to the two devices. For DSC, a classified discussion according to the morphology is presented because electrode properties are closely related to the specific porosity or nanostructure of carbon materials. The pivotal factors influencing the catalytic behavior of carbon CEs are also discussed. For PSC, an overview of the new carbon CE materials is addressed comprehensively. Moreover, the modification techniques to improve the interfacial contact between the perovskite and carbon layers, aiming to enhance the photovoltaic performance, are also demonstrated. Finally, the development directions, main challenges, and coping approaches with respect to the carbon CE in DSC and PSC are stated.

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Paintable Carbon‐Based Perovskite Solar Cells with Engineered Perovskite/Carbon Interface Using Carbon Nanotubes Dripping Method

Cited by 100 publications

References 34 publications

Promoting the Hole Extraction with Co₃O₄ Nanomaterials for Efficient Carbon‐Based CsPbI₂Br Perovskite Solar Cells

Promoting the Hole Extraction with Co₃O₄ Nanomaterials for Efficient Carbon‐Based CsPbI₂Br Perovskite Solar Cells

Single‐Walled Carbon Nanotubes in Emerging Solar Cells: Synthesis and Electrode Applications

Carbon Counter Electrodes in Dye‐Sensitized and Perovskite Solar Cells

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Paintable Carbon‐Based Perovskite Solar Cells with Engineered Perovskite/Carbon Interface Using Carbon Nanotubes Dripping Method

Cited by 100 publications

References 34 publications

Promoting the Hole Extraction with Co3O4 Nanomaterials for Efficient Carbon‐Based CsPbI2Br Perovskite Solar Cells

Promoting the Hole Extraction with Co3O4 Nanomaterials for Efficient Carbon‐Based CsPbI2Br Perovskite Solar Cells

Single‐Walled Carbon Nanotubes in Emerging Solar Cells: Synthesis and Electrode Applications

Carbon Counter Electrodes in Dye‐Sensitized and Perovskite Solar Cells

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Promoting the Hole Extraction with Co₃O₄ Nanomaterials for Efficient Carbon‐Based CsPbI₂Br Perovskite Solar Cells

Promoting the Hole Extraction with Co₃O₄ Nanomaterials for Efficient Carbon‐Based CsPbI₂Br Perovskite Solar Cells