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Photoelectrochemical properties of mesoporous NiO x deposited on technical FTO via nanopowder sintering in conventional and plasma atmospheres.

Awais M, Dowling DD, Decker F, Dini D - Springerplus (2015)

Bottom Line: Photoelectrochemical effects of sensitized RDS NiO x were evidenced upon oxide reduction.With the addition of iodine RDS NiOx electrodes could give the reduction iodine → iodide in addition to the reduction of RDS NiO x . p-type dye sensitized solar cells were assembled with RDS NiO x photocathodes sensitized either by ERY or Fast Green.Resulting overall efficiencies ranged between 0.02 and 0.04 % upon irradiation with solar spectrum simulator (I in: 0.1 W cm(-2)).

View Article: PubMed Central - PubMed

Affiliation: Department of Industrial Engineering, "King Abdulaziz" University, Rabigh, KSA.

ABSTRACT
Nanoporous nickel oxide (NiO x ) has been deposited with two different procedures of sintering (CS and RDS). Both samples display solid state oxidation at about 3.1 V vs Li+/Li. Upon sensitization of CS/RDS NiO x with erythrosine b (ERY), nickel oxide oxidation occurs at the same potential. Impedance spectroscopy revealed a higher charge transfer resistance for ERY-sensitized RDS NiO x with respect to sensitized CS NiO x . This was due to the chemisorption of a larger amount of ERY on RDS with respect to CS NiO x . Upon illumination the photoinduced charge transfer between ERY layer and NiO x could be observed only with oxidized CS. Photoelectrochemical effects of sensitized RDS NiO x were evidenced upon oxide reduction. With the addition of iodine RDS NiOx electrodes could give the reduction iodine → iodide in addition to the reduction of RDS NiO x . p-type dye sensitized solar cells were assembled with RDS NiO x photocathodes sensitized either by ERY or Fast Green. Resulting overall efficiencies ranged between 0.02 and 0.04 % upon irradiation with solar spectrum simulator (I in: 0.1 W cm(-2)).

No MeSH data available.


Related in: MedlinePlus

Stabilized cyclic voltammogram of FTO after prolonged cycling. Conditions as in Fig. 1. Arrows indicate the verse of scan
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Fig2: Stabilized cyclic voltammogram of FTO after prolonged cycling. Conditions as in Fig. 1. Arrows indicate the verse of scan

Mentions: The electrochemically driven process of Eq. 1 leads to the permanent rearrangement of the FTO structure with the formation of LizSnFxOy (here indicated as lithiated FTO). Upon prolonged cycling the voltammogram of uncoated lithiated FTO stabilizes with the observation of the profile plotted in Fig. 2.Fig. 2


Photoelectrochemical properties of mesoporous NiO x deposited on technical FTO via nanopowder sintering in conventional and plasma atmospheres.

Awais M, Dowling DD, Decker F, Dini D - Springerplus (2015)

Stabilized cyclic voltammogram of FTO after prolonged cycling. Conditions as in Fig. 1. Arrows indicate the verse of scan
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4627985&req=5

Fig2: Stabilized cyclic voltammogram of FTO after prolonged cycling. Conditions as in Fig. 1. Arrows indicate the verse of scan
Mentions: The electrochemically driven process of Eq. 1 leads to the permanent rearrangement of the FTO structure with the formation of LizSnFxOy (here indicated as lithiated FTO). Upon prolonged cycling the voltammogram of uncoated lithiated FTO stabilizes with the observation of the profile plotted in Fig. 2.Fig. 2

Bottom Line: Photoelectrochemical effects of sensitized RDS NiO x were evidenced upon oxide reduction.With the addition of iodine RDS NiOx electrodes could give the reduction iodine → iodide in addition to the reduction of RDS NiO x . p-type dye sensitized solar cells were assembled with RDS NiO x photocathodes sensitized either by ERY or Fast Green.Resulting overall efficiencies ranged between 0.02 and 0.04 % upon irradiation with solar spectrum simulator (I in: 0.1 W cm(-2)).

View Article: PubMed Central - PubMed

Affiliation: Department of Industrial Engineering, "King Abdulaziz" University, Rabigh, KSA.

ABSTRACT
Nanoporous nickel oxide (NiO x ) has been deposited with two different procedures of sintering (CS and RDS). Both samples display solid state oxidation at about 3.1 V vs Li+/Li. Upon sensitization of CS/RDS NiO x with erythrosine b (ERY), nickel oxide oxidation occurs at the same potential. Impedance spectroscopy revealed a higher charge transfer resistance for ERY-sensitized RDS NiO x with respect to sensitized CS NiO x . This was due to the chemisorption of a larger amount of ERY on RDS with respect to CS NiO x . Upon illumination the photoinduced charge transfer between ERY layer and NiO x could be observed only with oxidized CS. Photoelectrochemical effects of sensitized RDS NiO x were evidenced upon oxide reduction. With the addition of iodine RDS NiOx electrodes could give the reduction iodine → iodide in addition to the reduction of RDS NiO x . p-type dye sensitized solar cells were assembled with RDS NiO x photocathodes sensitized either by ERY or Fast Green. Resulting overall efficiencies ranged between 0.02 and 0.04 % upon irradiation with solar spectrum simulator (I in: 0.1 W cm(-2)).

No MeSH data available.


Related in: MedlinePlus