Reversible Structural Swell–Shrink and Recoverable Optical Properties in Hybrid Inorganic–Organic Perovskite

Zhang, Yupeng; Wang, Yusheng; Xu, Zai‐Quan; Liu, Jingying; Song, Jingchao; Xue, Yunzhou; Wang, Ziyu; Zheng, Jun; Jiang, Liangcong; Zheng, Changxi; Huang, Fuzhi; Sun, Baoquan; Cheng, Yi‐Bing; Bao, Qiaoliang

doi:10.1021/acsnano.6b03104

Cited by 75 publications

(77 citation statements)

References 38 publications

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“…[92] This frequently used approach usually produces materials with high quality as well as well-defined morphology. In an air-free atmosphere and with the presence of oleic acid at 150-250 °C, the same group successfully synthesized the CsPbX 3 NWs by mixing cesium oleate with lead halide.…”

Section: D Perovskite: Nanowires and Nanorodsmentioning

confidence: 99%

Low‐Dimensional Perovskites: From Synthesis to Stability in Perovskite Solar Cells

Yusoff

Nazeeruddin

2017

Advanced Energy Materials

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ruthenium molecular dye, wide absorption range, direct and tunable bandgaps, superior charge carrier mobility, and long carrier diffusion length. [6,[43][44][45] Although it has been synthesized for over 100 years, Mitzi et al. were the first to investigate the electrical properties of tin-based perovskite in 1994, [46] which was later used in numerous devices, including field effect transistors (FETs) and LEDs. [47][48][49] The attention toward metal halide perovskites sparked yet again in 2009, [42] and they were later named one of the most promising emerging technologies in 2016. In brief, metal halide perovskites can be divided into two types based on their crystal structure motif: (i) 3D-structured perovskite (AMX 3 ) and (ii) 2D-structured perovskite (A 2 MX 4 ). The structure of the perovskite could either be 2D or 3D, while the dimensions of the perovskite probably belong to 0D-3D. The term "perovskite" implies to the general class of materials derived from an elemental composition of AMX 3 and demonstrates the crystal structure of perovskite crystal CaTiO 3 , where the divalent metal M resides at the body center and surrounded by six X-anions located at the face centers in an octahedral cluster. The MX 6 in the octahedral cluster may form an extended 3D structure by all-corner-connected type with A-cation sitting at the center. It could also form a 2D perovskite when the 3D perovskite network is cut into one-layer-thick slices along the 〈100〉 direction and separates them apart. In principle, 2D perovskite is the easiest to synthesize because of its natural layered structure, which is held together by weak van der Waals forces. Dou et al. reported the large-scale synthesis of the monolayer (C 4 H 9 NH 3 ) 2 -PbBr 4 by a chemical method. [50] Along the same lines, several groups have prepared and characterized nanomaterials composed of various forms of perovskites. [51][52][53] Also, our group has recently successfully prepared a low-dimensional mixed 2D/3D perovskite using the protonated salt of amino valeric acid iodide (AVAI) as an organic precursor mixed with PbI 2 , in which a yellowish film was containing needle-like crystallite formed. [54] In this topical review, we present the latest advances in the synthesis of low-dimensional perovskites and the growth mechanism to develop a strategy to achieve best performing devices. Later, we focus the instability and a cost-effective solution to circumvent this problem, which is vital for the eventual deployment of perovskite solar cells to consumers market. We present an analysis of the origins for instability in perovskite solar cells, and present a summary of the main achievements and possible future developments of these low-dimensional perovskite. [2,55] Perovskite solar cells have been heralded as one of the most promising emerging technologies in 2016 because of the very high power conversion efficiency of 22% and the low cost of generating electricity compared to even fossil fuels. These are formed with various dimensionalities and can be fully mani...

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Section: D Perovskite: Nanowires and Nanorodsmentioning

confidence: 99%

Low‐Dimensional Perovskites: From Synthesis to Stability in Perovskite Solar Cells

Yusoff

Nazeeruddin

2017

Advanced Energy Materials

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“…Copyright 2015, American Chemical Society. g) Emission wavelength, h) carrier mobility, i) carrier diffusion length, and j) photoluminescence quantum yield of 2D perovskite and other 2D covalent semiconductors …”

Section: Emergence Of 2d Metal‐halide Perovskitesmentioning

confidence: 99%

“…Especially for the 2D perovskites, ions migration is confined into the 2D plane, which should amplify the influence. Previous studies revealed that ion migration, especially the migration of organic cations in low‐dimensional perovskites, will induce a reversible structural swell–shrink. This will recoverably affect the reflective index, absorption/color, quantum efficiency, light‐harvesting, and photoelectric properties, making 2D perovskite a promising candidate for constructing tunable photonic or optoelectronic devices, such as ultrafast, entirely solid‐state displays with nanometer‐scale pixels, semi‐transparent smart glasses, smart contact lenses, and artificial retina devices …”

Section: Optical and Electronic Propertiesmentioning

confidence: 99%

“…In addition, 2D perovskites, unlike most 2D covalent semiconductors, are special ionic materials where ion‐migration behavior is general and intrinsic to the perovskites . Drawing upon the previous research on bulk perovskite materials, future research efforts are required to investigate the fundamental material properties of 2D perovskites and, in particular, the charge‐carrier dynamics and ion‐migration behaviors in this confined 2D system.…”

Section: Summary and Perspectivesmentioning

confidence: 99%

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Photonics and Optoelectronics of 2D Metal‐Halide Perovskites

Zhang

et al. 2018

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In the growing list of 2D semiconductors as potential successors to silicon in future devices, metal-halide perovskites have recently joined the family. Unlike other conversional 2D covalent semiconductors such as graphene, transition metal dichalcogenides, black phosphorus, etc., 2D perovskites are ionic materials, affording many distinct properties of their own, including high photoluminescence quantum efficiency, balanced large exciton binding energy and oscillator strength, and long carrier diffusion length. These unique properties make 2D perovskites potential candidates for optoelectronic and photonic devices such as solar cells, light-emitting diodes, photodetectors, nanolasers, waveguides, modulators, and so on, which represent a relatively new but exciting and rapidly expanding area of research. In this Review, the recent advances in emerging 2D metal-halide perovskites and their applications in the fields of optoelectronics and photonics are summarized and insights into the future direction of these fields are offered.

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“…[127] Such a nonsymmetric backcontacted device platform is also helpful for understanding the effect of film morphology on the optoelectrical property and the final device performance. [128,129] Similar with the vertical-structured PSCs with symmetrical electrode work functions, there are also report on lateralstructured PSCs with symmetrical electrode work functions. [110] The lateral Al/MAPbI 3−x Cl x /MoO 3 /Au device gives a highest PCE of 2.4% (Figure 7l).…”

Section: Lateral Structurementioning

confidence: 93%

Simple, Robust, and Going More Efficient: Recent Advance on Electron Transport Layer‐Free Perovskite Solar Cells

Huang

2019

Advanced Energy Materials

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Perovskite solar cells (PSCs) have shown great potential for photovoltaic applications with their unprecedented power conversion efficiency advancement. Such devices generally have a complex structure design with high temperature processed TiO2 as the electron transport layer (ETL). Further careful design of device configuration to fully tap the potentials of perovskite materials is expected. Particularly, for the practical application of PSCs, it is crucial to simplify their device structures thus the associated manufacturing process and cost while maintaining their efficiency to be comparable with the conventional devices. But how simple is simple? ETL‐free PSCs promise the simplest structured, thus simple manufacturing processes and low cost large area PSCs in practical applications. They can also help the further exploration of the great potential of perovskite materials and understanding the working principle of PSCs. Within this review, the evolution of the PSC is outlined by discussing the recent advances in the simplification of device configuration and processes for cost effective, highly efficient, and robust PSCs, with a focus on ETL‐free PSCs. Their advancement, key issues, working mechanism, existing problems, and future performance enhancements. This review aims to promote the future development of low cost and robust ETL‐free PSCs toward more efficient power output.

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Reversible Structural Swell–Shrink and Recoverable Optical Properties in Hybrid Inorganic–Organic Perovskite

Cited by 75 publications

References 38 publications

Low‐Dimensional Perovskites: From Synthesis to Stability in Perovskite Solar Cells

Low‐Dimensional Perovskites: From Synthesis to Stability in Perovskite Solar Cells

Photonics and Optoelectronics of 2D Metal‐Halide Perovskites

Simple, Robust, and Going More Efficient: Recent Advance on Electron Transport Layer‐Free Perovskite Solar Cells

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