Amorphous and crystalline IrO2 thin films as potential stimulation electrode coatings

Thanawala, Sachin S.; Baird, Ronald J.; Georgiev, Daniel G.; Auner, Gregory W.

doi:10.1016/j.apsusc.2008.02.054

Cited by 49 publications

(28 citation statements)

References 31 publications

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“…Iridium (Ir) metal has some advantages in terms of thermal (1000 • C) and chemical stability [16,17]. In addition, iridium oxide (IrO 2 ) also has some advantages, such as high work function (>5 eV), excellent thermal stability and high transmittance [18,19], and so can be used in the electrodes of photodetectors [20,21].…”

Section: Introductionmentioning

confidence: 99%

Optoelectronic characteristics of UV photodetector based on ZnO nanowire thin films

Chen

Hung

Chang

et al. 2009

Journal of Alloys and Compounds

190

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Section: Introductionmentioning

confidence: 99%

Optoelectronic characteristics of UV photodetector based on ZnO nanowire thin films

Chen

Hung

Chang

et al. 2009

Journal of Alloys and Compounds

190

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“…Several more adequate deposition techniques were employed for synthesis of thin films of Ir-oxide such as sputtering [12], liquid delivery metal-organic (MOCD) [13], sol-gel process [14], pulsed laser deposition [15], thermal evaporation process [16], and spray pyrolysis [17]. Most of these techniques are either not feasible or too expensive for industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Electrical Characteristics and Nanocrystalline Formation of Sprayed Iridium Oxide Thin Films

Mahmoud

Al-Shomar

Akl

2010

Advances in Condensed Matter Physics

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Nanostructure and electrical properties of iridium oxide () thin films prepared by spray pyrolysis technique (SPT) have been experimentally characterized. The effect of solution molarity (SM) and substrate temperature () on the nanostructure features and electrical conductivity of these films has been investigated. The results of X-ray diffraction (XRD) showed that all samples prepared at with different SM, appear almost in amorphous form. XRD revealed that the films deposited at were tetragonal structures with a preferential orientation along direction. Moreover, the degree of crystallinity was improved by solution molarity. Single order Voigt profile method has been used to determine the nanostructure parameters at different SM and . The dark conductivity measurements at room temperature as a function of SM were observed and the value of conductivity were slightly increases at higher SM, reaching the bulk value of 20 . The values of activation energy of and of were found to be 0.21 eV and ·, respectively.

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“…However, at the ITO/PEDOT electrode, obvious Faradaic currents are observed at much lower potentials (E C 0.6 V), corresponding to the oxidation of PEDOT film itself [21,22]. Moreover, for IrO 2 -containing electrodes (ITO/IrO 2 and ITO/PEDOT/IrO 2 ), an oxidation peak, which was believed to be attributed to the reversible transition between lower iridium oxides and higher iridium oxides (reaction 1) [23,24], is observed in a broad potential range of 0.4-0.8 V (see enlarged plots in Fig. 2a: red and green curves).…”

Section: Characterizationsmentioning

confidence: 93%

Fabrication of indium tin oxides (ITO)-supported poly(3,4-ethylenedioxythiophene) electrodes coated with active IrO2 layer for morphine electrooxidation

et al. 2010

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Novel indium tin oxides (ITO)/PEDOT/IrO 2 composite electrodes were fabricated by dipping IrO 2 colloids onto poly(3,4-ethylenedioxythiophene) (PEDOT)-coated ITO substrate for morphine electrooxidation. Scanning electron microscopy (SEM) image showed that the active IrO 2 layer was dispersed more uniformly at PEDOT intermediate layer than at bare ITO substrate. Voltammetric measurements indicated that the as-prepared IrO 2 colloids are very active for both the oxygen evolution reactions (OER) and for reversible valance transition between lower and higher oxides. ITO/PEDOT/IrO 2 electrodes perform enhanced electrochemical activity towards the oxidation of morphine, as compared with the un-modified ITO-based PEDOT electrodes (ITO/PEDOT) or the ITO electrodes directly coated with IrO 2 (ITO/IrO 2 ), suggesting that the composite electrode materials are one of the potential candidates for morphine detection.

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Amorphous and crystalline IrO2 thin films as potential stimulation electrode coatings

Cited by 49 publications

References 31 publications

Optoelectronic characteristics of UV photodetector based on ZnO nanowire thin films

Optoelectronic characteristics of UV photodetector based on ZnO nanowire thin films

Electrical Characteristics and Nanocrystalline Formation of Sprayed Iridium Oxide Thin Films

Fabrication of indium tin oxides (ITO)-supported poly(3,4-ethylenedioxythiophene) electrodes coated with active IrO2 layer for morphine electrooxidation

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