Preparation and optical properties of phase-change VO2 thin films

Lu, Songwei; Hou, Lianping; Gan, Fuxi

doi:10.1007/bf00367579

Cited by 72 publications

(25 citation statements)

References 16 publications

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“…Three fairly well resolved peaks might be seen in Fig. 1, indicating that three different data sets (corresponding to V 2 O 5 , 516.3 [14,17] 516.4 [18] 516.45 [19] 516.5 [20] 516.55 [13, 517.3 [28] 517.4 [20,[29][30][31] 517.45 [19] 517.6 [13] 517.65 [32] 517.7 [32][33][34] VO 2 , and V 2 O 3 reference samples) are involved in the distribution function. Further analysis was done assuming that the reference data for individual oxides are distributed according to the Gaussian law:…”

Section: Literature Analysismentioning

confidence: 89%

Valence of vanadium in hydrated compounds

Bondarenka¹

2007

Lithuanian J. Phys.

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Problems of the definition of vanadium chemical states in the mixed valency compounds are examined. The statistical analysis of the literature data on the values of binding energy and full width at half maximum (FWHM) of V 2p 3/2 peaks in different vanadium oxides is carried out.X-ray photoelectron spectroscopy was used to determine the chemical shift and FWHM of V 2p peaks of V 4+ and V 5+cations in the vanadium pentoxide matrix of hydrated vanadium compounds HV12O31·nH2O and (VO)V12O31·nH2O, prepared by using sol-gel technology. It was found that the binding energy of V 4+ ions shifts to the lower energy side of about 1.3 eV as compared to the main V 5+ ions in the matrix. The V 2p 3/2 line width for tetra-valent vanadium ions in xerogels is actually the same as for penta-valent ions.

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Section: Literature Analysismentioning

confidence: 89%

Valence of vanadium in hydrated compounds

Bondarenka¹

2007

Lithuanian J. Phys.

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“…12, the cyclic voltammogram performed in a potential window between 2.8 and 3.8 V shows two reversible peaks at about 3.4 and 3.2 V. This is in accordance with the reported lithium intercalation behaviour of crystalline V 2 O 5 films produced by various deposition techniques, including sol-gel and ALD. 1,7 Assuming that 1 Li per V 2 O 5 molecule can be inserted, the thickness of the inserted V 2 O 5 layer can be calculated from the charge of the CV peaks. For the oxide film formed by 5 min oxidation at 750 mbar O 2 at 500°C, a thickness of 134 nm is obtained.…”

Section: Intercalation Behaviourmentioning

confidence: 99%

Thin films of vanadium oxide grown on vanadium metal: oxidation conditions to produce V2O5 films for Li-intercalation applications and characterisation by XPS, AFM, RBS/NRA

Lindström

Maurice

Zanna

et al. 2005

Surf. Interface Anal.

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“…Thin films production via the sol-gel method has been widely employed for depositing thermochromic V0 2 films [93], [94]. This synthesis route provides a relatively cheap and suitable method for large surface area deposition, with the ease of introducing metal dopants and relatively low processing temperatures; However, the films produces are of lower density than those deposited via PVD methods thus are more prone to cracking.…”

Section: Sol-gel Synthesismentioning

confidence: 99%

Thermochromic Thin Films and Nanocomposites for Smart Glazing

Binions

2012

Intelligent Nanomaterials

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Solid-state thermochromic materials undergo semiconductor to metal transitions at a critical temperature, Γ. This chapter begins by describing the phenomenon of thermochromism, whereby the optical properties of a material change reversibly as a result of a change in temperature. The different types of thermochromism will be introduced with a focus on the thermochromism exhibited by solid-state materials. Also presented are the fundamental chemical principles that describe the electronic structure and properties of solids, and the chronological developments in the theory behind the thermochromic transitions that lead to the discovery of the semiconductor-to-metal transition. The focus is on vanadium dioxide, V0 2 , because its critical temperature is closest to room temperature, so it is a valuable material for potential application in thermochromic glazing. The possibility of fine-tuning this transition temperature involves introducing various dopants into the V0 2 lattice, which can increase or decrease Γ.Additionally, the chapter will examine the effects of dopants and the requirements of dopants to achieve the desired effect on T will be discussed. Solid-state thermochromic materials may be exploited in devices such as microelectronics, data storage, or intelligent architectural glazing, thus are required to be synthesis as thin films for use in such applications. The numerous synthetic techniques for making metal oxide thermochromic thin films will be investigated through a comparison of each synthetic method.In exploring recent research on the production of thin film, the chapter explains that micro-structural changes bought about by careful control of film growth conditions, and/or the use of surfactant, lead to an

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Preparation and optical properties of phase-change VO2 thin films

Cited by 72 publications

References 16 publications

Valence of vanadium in hydrated compounds

Valence of vanadium in hydrated compounds

Thin films of vanadium oxide grown on vanadium metal: oxidation conditions to produce V2O5 films for Li-intercalation applications and characterisation by XPS, AFM, RBS/NRA

Thermochromic Thin Films and Nanocomposites for Smart Glazing

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