A comprehensive review on synthesis and applications of single crystal perovskite halides

Arya, Sandeep; Mahajan, Prerna; Gupta, Ramashanker; Srivastava, Ritu; Tailor, Naveen Kumar; Satapathi, Soumitra; Sumathi, R. Radhakrishnan; Datt, Ram; Gupta, Vinay

doi:10.1016/j.progsolidstchem.2020.100286

Cited by 86 publications

(67 citation statements)

References 156 publications

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“…Our single crystals show superior carrier mobility to thin‐film counterparts [ 24 ] and are comparable to high‐quality single crystals. [ 11a,25 ] In short, TPC measurement confirms that CsI treatment can help cuboid SCs achieve higher carrier mobility, for which 60% improvement is realized by 65 nm of CsI treatment (from 56 to 93 cm 2 V −1 s −1 ).…”

Section: Resultsmentioning

confidence: 77%

Self‐Assembled Perovskite Nanoislands on CH₃NH₃PbI₃ Cuboid Single Crystals by Energetic Surface Engineering

Zhang

Kim

Yun

et al. 2021

Adv Funct Materials

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Organometal perovskite single crystals have been recognized as a promising platform for high-performance optoelectronic devices, featuring high crystallinity and stability. However, a high trap density and structural nonuniformity at the surface have been major barriers to the progress of single crystal-based optoelectronic devices. Here, the formation of a unique nanoisland structure is reported at the surface of the facet-controlled cuboid MAPbI 3 (MA = CH 3 NH 3 +) single crystals through a cation interdiffusion process enabled by energetically vaporized CsI. The interdiffusion of mobile ions between the bulk and the surface is triggered by thermally activated CsI vapor, which reconstructs the surface that is rich in MA and CsI with reduced dangling bonds. Simultaneously, an array of Cs-Pb-rich nanoislands is constructed on the surface of the MAPbI 3 single crystals. This newly reconstructed nanoisland surface enhances the light absorbance over 50% and increases the charge carrier mobility from 56 to 93 cm 2 V −1 s −1 . As confirmed by Kelvin probe force microscopy, the nanoislands form a gradient band bending that prevents recombination of excess carriers, and thus, enhances lateral carrier transport properties. This unique engineering of the single crystal surface provides a pathway towards developing high-quality perovskite single-crystal surface for optoelectronic applications.

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Section: Resultsmentioning

confidence: 77%

Self‐Assembled Perovskite Nanoislands on CH₃NH₃PbI₃ Cuboid Single Crystals by Energetic Surface Engineering

Zhang

Kim

Yun

et al. 2021

Adv Funct Materials

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“…In the last decade metal halide perovskites (MHPs) have emerged as a new class of promising semiconductors owing to their peculiar physical properties that make them suitable for different optoelectronic applications. (Fu et al, 2019;Shamsi et al, 2019;Arya et al, 2020;Chouhan et al, 2020;Roy et al, 2020). In particular, the major results of these materials were attained in the photovoltaic field: after just 5 years of research, the efficiency of perovskite solar cells increased from 4 to 20% and they can currently achieve certified values of more than 25%.…”

Section: Introductionmentioning

confidence: 99%

Morphological and Optical Tuning of Lead-Free Cs2SnX6 (X = I, Br) Perovskite Nanocrystals by Ligand Engineering

et al. 2021

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In order to overcome the toxicity of lead halide perovskites, in recent years the research has focused on replacing lead with more environmentally friendly metals like tin, germanium, bismuth or antimony. However, lead-free perovskites still present instability issues and low performances that do not make them competitive when compared to their lead-based counterparts. Here we report the synthesis of lead-free Cs2SnX6 (X = Br, I) nanostructures of different shapes by using various surface ligands. These compounds are a promising alternative to lead halide perovskites in which the replacement of divalent lead (Pb(II)) with tetravalent tin (Sn(IV)) causes a modification of the standard perovskite structure. We investigate the effects of different amines on the morphology and size of Cs2SnX6 (X = Br, I) nanocrystals, presenting a facile hot-infection method to directly synthesize three-dimensional (3D) nanoparticles as well as two-dimensional (2D) nanoplatelets. The amines not only modify the shape of the crystals, but also affect their optical properties: increasing the length of the amine carbon chain we observe a widening in the bandgap of the compounds and a blue-shift of their emission peak. Alongside the tuning of the chemical composition and the reduction of the crystal size, our study offers a new insight in controlling the physical properties of perovskite nanocrystals by means of the capping ligands, paving the way for future research on lead-free materials.

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“…[ 28–23 ] Synthesizing SCs can solve this problem and can offer controllable optoelectronic properties. [ 31,32 ] Even though the solubility issue posed problems but with proper optimization procedures, we succeeded to obtain SCs of Cs 3 Sb 2 I 9 by slow cooling method as illustrated in Figure a. The details of experimental procedures are given in Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

Reversible Thermochromism in All‐Inorganic Lead‐Free Cs₃Sb₂I₉ Perovskite Single Crystals

Singh

Satapathi

2021

Advanced Optical Materials

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Here, lattice expansion modulated reversible thermochromism (TCM) in all‐inorganic lead‐free Cs3Sb2I9 perovskite single crystals (SCs) is demonstrated. Upon temperature change, Cs3Sb2I9 SC exhibits a reversible color change between red and dark‐brown. The corresponding optical band‐edge modulation and structural phase transition are monitored by temperature dependent UV–vis absorption spectroscopy and X‐ray diffraction study. This observed reversible TCM is attributed to the lattice expansion and strain relaxation at elevated temperatures. Additionally, Raman spectroscopy confirms enhanced electron–phonon coupling originating from stretched SbI terminal bonds at elevated temperature. This work validates that the all‐inorganic Cs3Sb2I9 perovskites have the potential in smart thermochromic windows and temperature sensors applications.

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A comprehensive review on synthesis and applications of single crystal perovskite halides

Cited by 86 publications

References 156 publications

Self‐Assembled Perovskite Nanoislands on CH₃NH₃PbI₃ Cuboid Single Crystals by Energetic Surface Engineering

Self‐Assembled Perovskite Nanoislands on CH₃NH₃PbI₃ Cuboid Single Crystals by Energetic Surface Engineering

Morphological and Optical Tuning of Lead-Free Cs2SnX6 (X = I, Br) Perovskite Nanocrystals by Ligand Engineering

Reversible Thermochromism in All‐Inorganic Lead‐Free Cs₃Sb₂I₉ Perovskite Single Crystals

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A comprehensive review on synthesis and applications of single crystal perovskite halides

Cited by 86 publications

References 156 publications

Self‐Assembled Perovskite Nanoislands on CH3NH3PbI3 Cuboid Single Crystals by Energetic Surface Engineering

Self‐Assembled Perovskite Nanoislands on CH3NH3PbI3 Cuboid Single Crystals by Energetic Surface Engineering

Morphological and Optical Tuning of Lead-Free Cs2SnX6 (X = I, Br) Perovskite Nanocrystals by Ligand Engineering

Reversible Thermochromism in All‐Inorganic Lead‐Free Cs3Sb2I9 Perovskite Single Crystals

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Self‐Assembled Perovskite Nanoislands on CH₃NH₃PbI₃ Cuboid Single Crystals by Energetic Surface Engineering

Self‐Assembled Perovskite Nanoislands on CH₃NH₃PbI₃ Cuboid Single Crystals by Energetic Surface Engineering

Reversible Thermochromism in All‐Inorganic Lead‐Free Cs₃Sb₂I₉ Perovskite Single Crystals