Fundamentals of Crystal Growth from Solutions

Притула, И. М.; Sangwal, K.

doi:10.1016/b978-0-444-63303-3.00029-8

Cited by 15 publications

(15 citation statements)

References 81 publications

(80 reference statements)

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“…(1) The existence of AFGP molecules lowers the freezing temperature (T f ) of water, inhibiting the growth of existing ice crystals, but keeps the melting temperature (T e ) of ice at the equilibrium melting point, as shown schematically in figure 1. (2) In the temperature region between T e and T f , which is called the 'thermal hysteresis' region, the ice crystals take on dodecahedral shapes surrounded by 12 pyramidal {1011} faces with lengths of a few tens of micrometres at most, and the growth completely stops. The water never freezes in the temperature range between the equilibrium melting point, T e , and the freezing temperature, T f .…”

Section: Biological Macromolecules With An Antifreeze Functionmentioning

confidence: 99%

“…Crystal growth and morphology are modified by various external factors such as diffusion field, convection (gravity) and impurities [1]. The effect of impurities is very important when discussing various aspects of crystals such as their shape, internal structures and morphological instabilities [2]. The impurity effect is also important for industrial crystallization because it controls the size distribution and shape of crystalline particles.…”

Section: Introductionmentioning

confidence: 99%

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Crystal-plane-dependent effects of antifreeze glycoprotein impurity for ice growth dynamics

Furukawa

Nagashima

Nakatsubo

et al. 2019

Phil. Trans. R. Soc. A.

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An impurity effect on ice crystal growth in supercooled water is an important subject in relation to ice crystal formation in various conditions in the Earth's cryosphere regions. In this review, we consider antifreeze glycoprotein molecules as an impurity. These molecules are well known as functional molecules for controlling ice crystal growth by their adsorption on growing ice/water interfaces. Experiments on free growth of ice crystals in supercooled water containing an antifreeze protein were conducted on the ground and in the International Space Station, and the normal growth rates for the main crystallographic faces of ice, namely, basal and prismatic faces, were precisely measured as functions of growth conditions and time. The crystal-plane-dependent functions of AFGP molecules for ice crystal growth were clearly shown. Based on the magnitude relationship for normal growth rates among basal, prismatic and pyramidal faces, we explain the formation of a dodecahedral external shape of an ice crystal in relation to the key principle governing the growth of polyhedral crystals. Finally, we emphasize that the crystal-plane dependence of the function of antifreeze proteins on ice crystal growth relates to the freezing prevention of living organisms in sub-zero temperature conditions. This article is part of the theme issue ‘The physics and chemistry of ice: scaffolding across scales, from the viability of life to the formation of planets’.

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Section: Biological Macromolecules With An Antifreeze Functionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crystal-plane-dependent effects of antifreeze glycoprotein impurity for ice growth dynamics

Furukawa

Nagashima

Nakatsubo

et al. 2019

Phil. Trans. R. Soc. A.

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“…It is known that the growth rate of a grain is determined by the difference in Gibbs free energy (ΔG f ) of the precursor and formed perovskite, including internal and surface/interface energy of the grains. 21,22 This diffusion-controlled process will speed up with the annealing temperature which will also increase the rate of desolvation.…”

Section: Resultsmentioning

confidence: 99%

Morphology Engineering: A Route to Highly Reproducible and High Efficiency Perovskite Solar Cells

Luo

Wang

et al. 2017

ChemSusChem

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Despite the rapid increase in the performance of perovskite solar cells, they still suffer from low lab-to-lab or people-to-people reproducibility. Aiming for a universal condition to high performance devices, we investigated the morphology evolution of the composite perovskite by tuning annealing temperature and precursor concentration of the perovskite film. Here we introduce thermal annealing as a powerful tool to generate a well controlled excess of PbI 2 in the perovskite formulation and show that this benefits the photovoltaic performance. We demonstrated the correlation between the film microstructure and electronic property and device performance. An optimized average grain size/thickness aspect ratio of the perovskite crystallite is identified, which brings about a highly 2 reproducible power conversion efficiency (PCE) of 19.5%, with a certified value of 19.08%.Negligible hysteresis and outstanding morphology stability are observed with these devices. These findings lay the foundation for further boosting the PCE of PSC and can be very instructive in fabrication high quality perovskite films for a variety of applications, such as light-emitting diodes, field-effect transistors and photo-detectors, etc.

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“…However, the solvents may also hydrolyze the solutes to form insoluble substances under certain temperatures and pressure. Typical solvent of solutions could be water, various organic liquids, or their mixtures [ 118 ] depending on different requirements of hydrolyzing rate. After the hydrolysis reaction between the solutes and solvents, the solution becomes supersaturated for the insoluble substances, and crystallization occurs in the supersaturated solution [ 118 ].…”

Section: Crystal Growth From Solution Processmentioning

confidence: 99%

A Review on Gallium Oxide Materials from Solution Processes

et al. 2022

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Gallium oxide (Ga2O3) materials can be fabricated via various methods or processes. It is often mentioned that it possesses different polymorphs (α-, β-, γ-, δ- and ε-Ga2O3) and excellent physical and chemical properties. The basic properties, crystalline structure, band gap, density of states, and other properties of Ga2O3 will be discussed in this article. This article extensively discusses synthesis of pure Ga2O3, co-doped Ga2O3 and Ga2O3-metal oxide composite and Ga2O3/metal oxide heterostructure nanomaterials via solution-based methods mainly sol-gel, hydrothermal, chemical bath methods, solvothermal, forced hydrolysis, reflux condensation, and electrochemical deposition methods. The influence of the type of precursor solution and the synthesis conditions on the morphology, size, and properties of final products is thoroughly described. Furthermore, the applications of Ga2O3 will be introduced and discussed from these solution processes, such as deep ultraviolet photodetector, gas sensors, pH sensors, photocatalytic and photodegradation, and other applications. In addition, research progress and future outlook are identified.

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Fundamentals of Crystal Growth from Solutions

Cited by 15 publications

References 81 publications

Crystal-plane-dependent effects of antifreeze glycoprotein impurity for ice growth dynamics

Crystal-plane-dependent effects of antifreeze glycoprotein impurity for ice growth dynamics

Morphology Engineering: A Route to Highly Reproducible and High Efficiency Perovskite Solar Cells

A Review on Gallium Oxide Materials from Solution Processes

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