Synthesis, characterization and electrical properties of CdI2 doped Al2O3 and TiO2 superionic conductors

Sultana, Saima; Rafi-Ud-Din, .

doi:10.1016/j.jallcom.2011.06.102

Cited by 14 publications

(11 citation statements)

References 21 publications

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“…5). Peaks at 2936 cm −1 refers to cross‐linking mode of the polymer chains and the peaks at 1174–1158 cm −1 corresponds to C―H bending mode [3, 25]. The characteristic broad band for O‐H group (in the presence of H band) of chitosan appears at 3429 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterisation and potential applications of polyaniline/chitosan‐Ag‐nano‐biocomposite

Sultana

Ahmad

Syed

et al. 2017

IET nanobiotechnol.

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Biodegradable polymers have greatly promoted the development of environmental, biomedical and allied sciences because of their biocompatibility and doping chemistry. The emergence of nanotechnology has envisaged greater options for the development of biodegradable materials. Polyaniline grafted chitosan (i.e. biodegradable PANI) copolymer was prepared by the chemical in situ polymerisation of aniline using ammonium per sulphate as initiator while Ag nanoparticle were synthesised by chemical reduction method and incorporated in to the polymer matrix. The as prepared materials were characterised by Xray diffraction, Fourier transform Infra-red spectroscopy, transmission electron microscopy, energy dispersive X-ray analysis. Moreover energy storage capacity, impedance properties were also studied. The main focus was on the photocatalytic degradation of organic dyes to remove the toxic and carcinogenic pollutants. This polymer nano-biocomposite has multifold applications and can be used as excellent materials for enhanced photodegradation and removal of toxic contaminants from waste waters and natural water streams. In addition, the biocompatible materials with excellent mechanical properties and low toxicity can also be used for tissue engineering, drug delivery and electrical energy storage devices.

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Section: Resultsmentioning

confidence: 99%

Synthesis, characterisation and potential applications of polyaniline/chitosan‐Ag‐nano‐biocomposite

Sultana

Ahmad

Syed

et al. 2017

IET nanobiotechnol.

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“…[37][38][39][40] Since then, Li-, Cu-, Ag-, Na-, Cd-, Csand Tl-halides have been doped with metal oxides such as Al2O3, TiO2, SiO2, Fe2O3, BaTiO3, ZrO2, CeO2, to enhance their conductivity. [37][38][41][42][43][44][45] Herein, we show that the addition of TiO2 into CuI significantly enhances its stability, hole conductivity and transparency. Structural and optical characterizations performed using X-Ray diffraction (XRD) and Raman show no new peaks for CuI-TiO2 when compared to pure CuI.…”

Section: Introductionmentioning

confidence: 99%

Introduction of TiO₂ in CuI for Its Improved Performance as a p-Type Transparent Conductor

Raj¹,

Lü²,

Liu

et al. 2019

ACS Appl. Mater. Interfaces

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The challenges of making high performance, low temperature processed, p-type transparent conductors (TCs) have been the main bottleneck for the development of flexible transparent 2 electronics. Though a few p-type transparent conducting oxides (TCOs) have shown promising results, they need high processing temperature to achieve the required conductivity which makes them unsuitable for organic and flexible electronic applications. Copper iodide is a wide band gap p-type semiconductor that can be heavily doped at low temperature (<100 o C) to achieve conductivity comparable or higher than many of the well-established p-type TCOs. However, as processed CuI loses its transparency and conductivity with time in an ambient condition which makes them unsuitable for long term applications. Herein, we propose CuI-TiO2 composite thin films as a replacement of pure CuI. We show that the introduction of TiO2 in CuI makes it more stable in ambient condition while also improving its conductivity and transparency. A detailed comparative analysis between CuI and CuI-TiO2 composite thin films have been performed to understand the reasons for improved conductivity, transparency and stability of CuI-TiO2 samples in comparison to pure CuI samples. The enhanced conductivity in CuI-TiO2 stems from the spacecharge layer formation at the CuI/TiO2 interface, while the improved transparency is due to reduced CuI grain growth mobility in the presence of TiO2. The improved stability of CuI-TiO2 in comparison to pure CuI is a result of inhibited recrystallization and grain growth, reduced loss of iodine and limited oxidation of CuI phase in presence of TiO2. For optimized fraction of TiO2, average transparency of ~78% (in 450-800 nm region) and a resistivity of 14 mΩ.cm is achieved, while maintaining a relatively high mobility of ~3.5 cm 2 V-1 s-1 with hole concentration reaching as high as 1.3 x 10 20 cm-3. Most importantly, this work opens up the possibility to design a new range of p-type transparent conducting materials using CuI/insulator composite system such as CuI/SiO2, CuI/Al2O3, CuI/SiNx, etc.

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“…All the samples revealed well defined singular semicircle in the spectra. The single semicircle indicates the simultaneous existence of both the grain and grain boundary effects [31,32]. Contribution of grain is strong enough over the grain boundary, which is confirmed by the existence of only one semicircle at lower frequencies [33].…”

Section: Resultsmentioning

confidence: 71%

Synthesis, characterization, electrical and dielectric studies of AgCuI and Co-SnO 2 composite solid electrolytes

Iqbal

Rafi-Ud-Din

2016

Materials Research Bulletin

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Synthesis, characterization and electrical properties of CdI2 doped Al2O3 and TiO2 superionic conductors

Cited by 14 publications

References 21 publications

Synthesis, characterisation and potential applications of polyaniline/chitosan‐Ag‐nano‐biocomposite

Synthesis, characterisation and potential applications of polyaniline/chitosan‐Ag‐nano‐biocomposite

Introduction of TiO₂ in CuI for Its Improved Performance as a p-Type Transparent Conductor

Synthesis, characterization, electrical and dielectric studies of AgCuI and Co-SnO 2 composite solid electrolytes

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Synthesis, characterization and electrical properties of CdI2 doped Al2O3 and TiO2 superionic conductors

Cited by 14 publications

References 21 publications

Synthesis, characterisation and potential applications of polyaniline/chitosan‐Ag‐nano‐biocomposite

Synthesis, characterisation and potential applications of polyaniline/chitosan‐Ag‐nano‐biocomposite

Introduction of TiO2 in CuI for Its Improved Performance as a p-Type Transparent Conductor

Synthesis, characterization, electrical and dielectric studies of AgCuI and Co-SnO 2 composite solid electrolytes

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Introduction of TiO₂ in CuI for Its Improved Performance as a p-Type Transparent Conductor