Photoelectrochemical study of sputtered nitrogen-doped titanium dioxide thin films in aqueous electrolyte

Lindgren, Torbjörn; Lu, Jun; Hoel, Anders; Granqvist, Claes‐Göran; Torres, Gemma Romualdo; Lindquist, Sten‐Eric

doi:10.1016/j.solmat.2004.02.044

Cited by 75 publications

(67 citation statements)

References 19 publications

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“…These values depend, as dictated by relations (1) and (2), on e -/h + transfer at the particle interface and the surface characteristics, but considering exclusively the photoactivation process, TiO 2 shows a limited performance. Thus in contrast to silicon, which presents an internal quantum efficiency (IQE) close to 100 % under illumination at 600 nm (Svrcek V., 2004), in TiO2, the absorbed photon-to-current efficiency is about 30 % at 360 nm (Lindgren T. et al, 2004).…”

Section: Efficiency Estimatesmentioning

confidence: 97%

Nanomaterials for Environmental Solar Energy Technologies: Applications & Limitations

Deligiannakis¹

2018

KONA

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Environmental remediation and energy production are currently listed among the priority tasks by administration bodies, stakeholders and market competition. In this context, nanomaterials present competitive advantages in terms of performance and production costs. In the present critical review, the current state of the art of nanomaterials used in environmentally benign technologies exploiting solar irradiation such as H 2 production, water-splitting and photocatalysis are discussed. Factors determining the overall efficiency are articulated in a single "photophysical efficiency" equation. The physical meaning, limits and constraints of each factor are analyzed, updated and examples are discussed. The article highlights the main structure-function relationships in tandem with the limitations posed by the particle's physicochemical properties, production method, and the prerequisites posed by regulatory bodies and market needs. Several misconceptions are highlighted with regard to performance and yields that ultimately impact the end use of the nanomaterials. Current targets/limitations posed by the US Department of Energy are discussed as case studies. For context-coherence reasons, the present review focuses on metal and metal-oxide nanoparticles, i.e. carbon nanomaterials are not covered herein.

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Section: Efficiency Estimatesmentioning

confidence: 97%

Nanomaterials for Environmental Solar Energy Technologies: Applications & Limitations

Deligiannakis¹

2018

KONA

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“…spray pyrolysis [5], sol-gel method [6], atmospheric pressure chemical vapor deposition [7], ion-assisted electron beam evaporation [8][9][10], atomic layer deposition [11], sputtering [12][13][14][15][16] and pulsed laser deposition (PLD) [17][18][19][20][21] coatings. The PLD process is particularly efficient in producing oxide thin films, while offering ease in controlling the physical, chemical and structural properties of the films.…”

Section: Introductionmentioning

confidence: 99%

Optical characterization of PLD grown nitrogen-doped TiO2 thin films

Farkas¹,

Budai²,

Kabalcı³

et al. 2008

Applied Surface Science

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“…The Ti (OC 4 H 9 ) 4 and diethanolamine (DEA) were first dissolved in absolute ethanol (60% of all) and stirred for 60 min to form solution A. Then deionized water and absolute ethanol (40% of all) were mixed together and added dropwise to the solution A under vigorous stirring.…”

Section: The Synthesis Of Tio 2 Sol and The Preparation Of Tio 2 Filmmentioning

confidence: 99%

“…Our investigations showed that TiO 2 film can just be used for the fabrication of UV sensor because of the distinctive UV absorption characteristics and the sensor will be superior to the traditional silicon-base UV sensor. Firstly, the relatively wide band gap makes the TiO 2 film show an intensive photo-to-current response to UV light under 340 nm, but no response to visible light has ever been found [4] . This property makes the film very suitable for the UV detection against the background of infrared and/or visible light.…”

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confidence: 99%

Preparation of transparent TiO2 nanocrystalline film for UV sensor

Cao

2006

CHINESE SCI BULL

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The nanocrystalline TiO 2 film electrodes were prepared by sol-gel method at different calcining temperatures, which had characteristics of different film thickness, uniform transparency, as well as high photoelectric and mechanical stability. Photoelectric measurements show that calcining temperature and film thickness could remarkably influence the photoelectric properties of the electrodes. The film calcined at 450℃ is anatase phase with high crystallinity and strong photoelectric activity, and shows the largest photocurrent. When the temperature is lower than 450℃, the film has weaker crystallinity because of a large number of defects in the film, and this is not favorable for the transport of the photogenerated carriers. And at a temperature higher than 450℃, the photocurrent of the electrode is decreased due to anatase-rutile phase transition in the film. The increase in film thickness is favorable to the enhancement of ultraviolet light (UV) absorption amount, which would improve the photoelectric activity of the film. But, excessive thickness will increase the recombination rate of the electron-hole pairs, and result in a reduction in electrode's photoelectric activity. In addition, the response sensitivity and stability of the photocurrent produced in the electrode are related to bias potential. At a potential of 0.4 V, the electrode shows a saturated photocurrent of 30.8 μA and a response time of ~1 s, suggesting that the prepared TiO 2 film electrode can be used for making UV sensors.Keywords: special function inorganic nonmetallic materials, nanocrystalline TiO 2 film, photoelectric property, UV sensor.Nanocrystalline TiO 2 is a very important inorganic semiconductor function material with a wild band gap of 3.0-3.2 eV. Owing to its characteristics of selective absorption for UV light, it has been extensively applied in photocatalysts, dye-sensitized solar cells and UV absorption coatings [1][2][3] . However, strong UV absorption of TiO 2 film, especially UV photo-to-current conversion applied to device is seldom studied. Our investigations showed that TiO 2 film can just be used for the fabrication of UV sensor because of the distinctive UV absorption characteristics and the sensor will be superior to the traditional silicon-base UV sensor. Firstly, the relatively wide band gap makes the TiO 2 film show an intensive photo-to-current response to UV light under 340 nm, but no response to visible light has ever been found [4] . This property makes the film very suitable for the UV detection against the background of infrared and/or visible light. So, the UV sensor will not only have great antijamming ability, but also a high sensitivity and resolution. Secondly, because the detector has prominent properties, such as good chemical stability, corrosion and elevated temperature resistances [5] , it can be widely applied in the special fields of ultraviolet astronomy, combustion engineering, flame detection, missile wake flame detection, etc. Furthermore, as a semiconductor device, the UV sensor based on th...

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Photoelectrochemical study of sputtered nitrogen-doped titanium dioxide thin films in aqueous electrolyte

Cited by 75 publications

References 19 publications

Nanomaterials for Environmental Solar Energy Technologies: Applications & Limitations

Nanomaterials for Environmental Solar Energy Technologies: Applications & Limitations

Optical characterization of PLD grown nitrogen-doped TiO2 thin films

Preparation of transparent TiO2 nanocrystalline film for UV sensor

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