A Rutile TiO<sub>2</sub> Electron Transport Layer for the Enhancement of Charge Collection for Efficient Perovskite Solar Cells

Wang, Yongling; Wan, Jiawei; Ding, Jie; Hu, Jin‐Song; Wang, Dan

doi:10.1002/ange.201902984

Cited by 12 publications

(3 citation statements)

References 43 publications

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“…Wang et al further improved the PCE of perovskite solar cells with rutile TiO 2 as ETL to 20.9% by forming a high-quality interface via a chemical bath deposition and high-temperature sintering process. 1253 Compared with the anatase TiO 2 , rutile TiO 2 exhibits higher conductivity and better interface contact with the active layer, which would benefit the charge extraction and collection in solar cells. Besides, Zhu et al designed a TiO 2 heterophase junction as the ETL of perovskite solar cells.…”

Section: Solar Cellsmentioning

confidence: 99%

Recent Progress on Phase Engineering of Nanomaterials

Yun,

Ge,

Shi

et al. 2023

Chem. Rev.

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As a key structural parameter, phase depicts the arrangement of atoms in materials. Normally, a nanomaterial exists in its thermodynamically stable crystal phase. With the development of nanotechnology, nanomaterials with unconventional crystal phases, which rarely exist in their bulk counterparts, or amorphous phase have been prepared using carefully controlled reaction conditions. Together these methods are beginning to enable phase engineering of nanomaterials (PEN), i.e. , the synthesis of nanomaterials with unconventional phases and the transformation between different phases, to obtain desired properties and functions. This Review summarizes the research progress in the field of PEN. First, we present representative strategies for the direct synthesis of unconventional phases and modulation of phase transformation in diverse kinds of nanomaterials. We cover the synthesis of nanomaterials ranging from metal nanostructures such as Au, Ag, Cu, Pd, and Ru, and their alloys; metal oxides, borides, and carbides; to transition metal dichalcogenides (TMDs) and 2D layered materials. We review synthesis and growth methods ranging from wet-chemical reduction and seed-mediated epitaxial growth to chemical vapor deposition (CVD), high pressure phase transformation, and electron and ion-beam irradiation. After that, we summarize the significant influence of phase on the various properties of unconventional-phase nanomaterials. We also discuss the potential applications of the developed unconventional-phase nanomaterials in different areas including catalysis, electrochemical energy storage (batteries and supercapacitors), solar cells, optoelectronics, and sensing. Finally, we discuss existing challenges and future research directions in PEN.

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Section: Solar Cellsmentioning

confidence: 99%

Recent Progress on Phase Engineering of Nanomaterials

Yun,

Ge,

Shi

et al. 2023

Chem. Rev.

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“…One of the endeavors in perovskite devices is focusing on charge transport, charge carrier extraction and growth in the transport layer, which are germane to achieving high PCE and stability. [82,83] This aspects is related to challenges with optimization of the charge transport layer materials owing to the poor charge mobility in the traditional transport layer materials. [84] ILs were used not only in perovskite precursor solutions, but also in transport layer materials to effectively improve their transport capacity.…”

Section: Effect Of Ionic Liquids On Charge Transportmentioning

confidence: 99%

Ionic Liquid Engineering in Perovskite Photovoltaics

Wang

Duan

Singh

et al. 2022

Energy & Environ Materials

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Over the past decade, perovskite photovoltaics have approached other currently available technologies and proven to be the most prospective type of solar cells. Although the many-sided research in this very active field has generated consistent results with regards to their undisputed consistently increasing power conversion efficiency, it also produced several rather contradictory opinions. Among other important details, debate surrounding their proneness to surface degradation and poor mechanical robustness, as well as the environmental footprint of this materials class remains a moot point. The application of ionic liquids appears as one of the potential remedies to some of these challenges due to their high conductivity, the opportunities for chemical 'tuning' of the structure, and relatively lower environmental footprint. This article provides an overview, classification, and applications of ionic liquids in perovskite solar cells. We summarize the use and role of ionic liquids as versatile additives, solvents, and modifiers in perovskite precursor solution, charge transport layer, as well as for interfacial and stability engineering. Finally, challenges and the future prospects for the design and/or selection of ionic liquids with a specific profile that meets the requirements for next generation highly efficient and stable perovskite solar cells are proposed.

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“…[1][2][3][4][5][6][7][8][9][10] The suitable energy level alignment between TiO 2 and light harvesting semiconductors endows the ability to efficiently extract electrons and block holes with reducing series recombination. [11][12][13][14] Meanwhile, the application of TiO 2 in photovoltaics is still inhibited by low electron mobility and the rough surface with large amount of defects, [15][16][17] which is unfavorable for ohmic contact between TiO 2 and organic/inorganic photoactive layers. As a consequence, there will be severe electron accumulation and recombination at interface, resulting in low power conversion efficiencies (PCEs) and obvious hysteresis in planar PSCs.…”

Section: Introductionmentioning

confidence: 99%

An Organic–Inorganic Hybrid Material Based on Benzo[ghi]perylenetri-imide and Cyclic Titanium-Oxo Cluster for Efficient Perovskite and Organic Solar Cells

et al. 2022

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Perovskite and organic solar cells usually required electron-transport interlayers to efficiently transport electron from the photoactive layer to the metal electrode. In general, pure organic or inorganic materials are applied into the interlayers, but organicinorganic hybrid materials have been rarely reported for this application. In this work, we reported the first titanium-oxo cluster-based organic-inorganic hybrid material by introducing large π-conjugated benzo[ghi]perylenetriimides as organic part via a simple ligand exchange reaction. This new hybrid material showed excellent solubility, wellaligned energy levels and excellent electron mobilities, enabling its great potential application as interlayer in solar cells. Indeed, its application as interlayer in perovskite

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A Rutile TiO₂ Electron Transport Layer for the Enhancement of Charge Collection for Efficient Perovskite Solar Cells

Cited by 12 publications

References 43 publications

Recent Progress on Phase Engineering of Nanomaterials

Recent Progress on Phase Engineering of Nanomaterials

Ionic Liquid Engineering in Perovskite Photovoltaics

An Organic–Inorganic Hybrid Material Based on Benzo[ghi]perylenetri-imide and Cyclic Titanium-Oxo Cluster for Efficient Perovskite and Organic Solar Cells

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A Rutile TiO2 Electron Transport Layer for the Enhancement of Charge Collection for Efficient Perovskite Solar Cells

Cited by 12 publications

References 43 publications

Recent Progress on Phase Engineering of Nanomaterials

Recent Progress on Phase Engineering of Nanomaterials

Ionic Liquid Engineering in Perovskite Photovoltaics

An Organic–Inorganic Hybrid Material Based on Benzo[ghi]perylenetri-imide and Cyclic Titanium-Oxo Cluster for Efficient Perovskite and Organic Solar Cells

Contact Info

Product

Resources

About

A Rutile TiO₂ Electron Transport Layer for the Enhancement of Charge Collection for Efficient Perovskite Solar Cells