Optical applications of sol-gel nano-composites

Surekha, Pinninti; Varshney, Anshu D.; Jerusha, Eunice; Pant, Bhasker; Rajesh, A. S.

doi:10.1016/j.matpr.2022.02.429

Cited by 3 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These topologies can be used for antireflective coatings for architectural glazing, the display industry, solar energy conversion, and ophthalmic lenses [8]. Controlling the structure of sol-gel prepared film could yield highly selective gas sensors [9]. Chen et al [10] studied the effect of pH value (1-10) on the corrosion protection ability of the sol-gel coatings.…”

Section: Figurementioning

confidence: 99%

Synthesis of Some Functional Oxides and Their Composites Using Sol-Gel Method

Hassen¹,

Sayed²,

Al‐Ghamdi³

et al. 2023

Sol-Gel Method - Recent Advances

View full text Add to dashboard Cite

Two main approaches for nanomaterials fabrication are the top-down and the bottom-up methods. The first is limited to mechanical grinding, thermal evaporation, ion sputtering, arc discharge, pulsed laser ablation, and other physical and chemical vapor deposition. These routes are costly, consume higher energy, and require complex technology such as ultrahigh vacuum. The bottom-up methods refer to the production of complex nanostructured materials from atoms and molecules. This approach is relatively simple and low in cost. However, it requires a good knowledge of the optical properties of the particles and their modifications when the particles are integrated with nanostructures. One of the widest bottom-up methods is the sol–gel. It involves a solution or sol (single-phase liquid) that undergoes a sol–gel transition (stable suspension of colloidal particles). In this chapter, we throw light on the history of sol–gel, its advantages, and limitations, operating this method for the production of different types of nanomaterials in the form of powders or thin films. In addition, some applications of the sol–gel-derived nanosized materials will be discussed.

show abstract

Section: Figurementioning

confidence: 99%

Synthesis of Some Functional Oxides and Their Composites Using Sol-Gel Method

Hassen¹,

Sayed²,

Al‐Ghamdi³

et al. 2023

Sol-Gel Method - Recent Advances

View full text Add to dashboard Cite

show abstract

“…CSD techniques, including sol–gel, metal–organic decomposition, and other methods, are highly promising in achieving a low temperature of crystalline phase formation, improved film qualities [ 32 , 33 , 34 ], and novel structures based on a variety of materials, e.g., see refs. [ 35 , 36 , 37 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

“…Columnar grain growth in CSD films is usually caused by heterogeneous nucleation at the film–substrate interface [ 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ]. For this reason, the main strategy of columnar grain growth in CSD films is a choice of the substrate with a close lattice constant or introducing an intermediate seeding layer whose structure decreases the Gibbs free energy Δ Gv at the interface [ 32 , 46 , 47 ].…”

Section: Introductionmentioning

confidence: 99%

Control of Columnar Grain Microstructure in CSD LaNiO3 Films

et al. 2023

View full text Add to dashboard Cite

Conductive LaNiO3 (LNO) films with an ABO3 perovskite structure deposited on silicon wafers are a promising material for various electronics applications. The creation of a well-defined columnar grain structure in CSD (Chemical Solution Deposition) LNO films is challenging to achieve on an amorphous substrate. Here, we report the formation of columnar grain structure in LNO films deposited on the Si-SiO2 substrate via layer-by-layer deposition with the control of soft-baking temperature and high temperature annealing time of each deposited layer. The columnar structure is controlled not by typical heterogeneous nucleation on the film/substrate interface, but by the crystallites’ coalescence during the successive layers’ deposition and annealing. The columnar structure of LNO film provides the low resistivity value ρ~700 µOhm·cm and is well suited to lead zirconate-titanate (PZT) film growth with perfect crystalline structure and ferroelectric performance. These results extend the understanding of columnar grain growth via CSD techniques and may enable the development of new materials and devices for distinct applications.

show abstract