On Cordelair–Greil Model about Electrophoretic Deposition

Abstract

Electrophoretic deposition (EPD) is a facile technique to deposit quantum dots (QDs) films, which can be used as the color conversion layers for display applications. To better understand the EPD process, researchers have built many models of the EPD process. However, most of these models lack solid experimental support. Here, by adopting simple yet effective solvent engineering and well‐designed experiments, this study proves the Cordelair–Greil model on EPD processes. Moreover, some supplements about this model are made according to practical experiments. The experimental verification of the Cordelair–Greil model is a solid step toward revealing the dynamics of the EPD process. Furthermore, the formation of cracks in EPD deposited QD films is prevented through solvent engineering. This work proves that besides modifying the intrinsic properties of QDs, solvent engineering is also a simple, effective, and low‐cost way to study the EPD process and improve the QD film qualities deposited.

Solid‐State Electrolytes for Sodium Metal Batteries: Recent Status and Future Opportunities

“…Further, the Na 3 V 1.5 Cr 0.5 (PO 4 ) 3 ||NZSP-3BTO||Na based SSMBs exhibited a capacity of 95 mAh g −1 at 100 mA g −1 and a cycling life over 400 times with a capacity retention of 84.4%. [45] Apart from oxide materials, graphene-like interlayers were also directly grown on NASICON. Typically, graphene-like carbon layers were deposited on Na 3 Zr 2 Si 2 PO 12 NASICON via chemical vapor deposition (CVD) method at 750 °C with acetonitrile precursor.…”

Eco-Friendly Electrophoretic Deposition of Fluorescent Nanocomposite Films in an Aqueous Dispersion of Hydrophilized Core/Shell CuInS2/ZnS Quantum Dots for Optoelectronic Applications

“…Fluorescent quantum dots (QDs), which are inorganic semiconductor nanocrystals, are phosphor materials with properties such as controllable band gap by quantum confinement effect, higher durability than organic materials, and high fluorescence quantum yield (FLQY). − Due to their great fluorescence (FL) properties, QDs are widely applied to optoelectronic devices such as QDs displays, lasers, and FL imaging in medicine. − However, Cd- and Pb-based QDs such as CdSe and CsPbBr 3 are restricted by the RoHS Directive due to their toxicity; therefore, alternative materials with lower toxicity are highly desired. − CuInS 2 (CIS) QDs are attractive nanophosphors that exhibit visible FL without Cd and Pb. They show lower self-absorption due to their larger Stokes shift caused by the Cu defect-related radiative recombination after interband excitation. − Furthermore, high FLQY is achieved by ZnS shelling to passivate surface defects of the CIS core causing the nonradiative recombination .…”

High‐Resolution, Highly Transparent, and Efficient Quantum Dot Light‐Emitting Diodes

“…Meanwhile, it is also difficult to exactly control the states of QDs due to the dependent complex parameters, such as pH value, electrolyte concentration, current density, viscosity of the suspension, mass flow, etc. [21,22] To achieve high-resolution QLEDs with good device performance, it is essential to protect QDs from damage during the QD pattern fabrication process. As we know, the QDs have a large specific surface area with high surface energy, thus suffering from chemical, optical, and thermal instability problems.…”

“…Meanwhile, it is also difficult to exactly control the states of QDs due to the dependent complex parameters, such as pH value, electrolyte concentration, current density, viscosity of the suspension, mass flow, etc. [ 21,22 ]…”