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1.
Plasma-enhanced ALD deposition of mixed CoNiO[sub]x protective layer for Ta[sub]3N[sub]5 water splitting photoanode
Nadiia Pastukhova, Yanbo Li, 2020, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...photoelectrochemical water splitting, light-responsive photoelectrodes, nickel oxides, cobalt oxides...
Ključne besede: photoelectrochemical water splitting, light-responsive photoelectrodes, nickel oxides, cobalt oxides
Objavljeno: 03.11.2020; Ogledov: 1537; Prenosov: 46
URL Polno besedilo (0,00 KB)

2.
Surface modified titanium dioxide using transition metals
Andraž Šuligoj, Iztok Arčon, Matjaž Mazaj, Goran Dražić, Denis Arčon, Pegie Cool, Urška Lavrenčič Štangar, Nataša Novak Tušar, 2018, izvirni znanstveni članek

Opis: Titanium dioxide has been widely used as an antimicrobial agent, UV-filter and catalyst for pollution abatement. Herein, surface modifications with selected transition metals (Me) over colloidal TiO2 nanoparticles and immobilization with a colloidal SiO2 binder as composite films (MeTiO2/SiO2) on a glass carrier were used to enhance solar-light photoactivity. Colloidal TiO2 nanoparticles were modified by loading selected transition metals (Me ¼ Mn, Fe, Co, Ni, Cu, and Zn) in the form of chlorides on their surface. They were present primarily as oxo-nanoclusters and a portion as metal oxides. The structural characteristics of bare TiO2 were preserved up to an optimal metal loading of 0.5 wt%. We have shown in situ that metal-oxo-nanoclusters with a redox potential close to that of O2/O2 were able to function as co-catalysts on the TiO2 surface which was excited by solar-light irradiation. The materials were tested for photocatalytic activity by two opposite methods; one detecting O2 (reduction, Rz ink test) while the other detecting OH (oxidation, terephthalic acid test). It was shown that the enhancement of the solar-light activity of TiO2 by the deposition of transition metal oxo-nanoclusters on the surface depends strongly on the combination of the reduction potential of such species and appropriate band positions of their oxides. The latter prevented excessive self-recombination of the photogenerated charge carriers by the nanoclusters in Ni and Zn modification, which was probably the case in other metal modifications. Overall, only Ni modification had a positive effect on solar photoactivity in both oxidation and reduction reactions.
Najdeno v: ključnih besedah
Povzetek najdenega: ...surface modified TiO2, XANES, EXAFS, Nickel, solar light photocatalyst...
Ključne besede: surface modified TiO2, XANES, EXAFS, Nickel, solar light photocatalyst
Objavljeno: 01.06.2018; Ogledov: 2352; Prenosov: 0
.pdf Polno besedilo (1,24 MB)

3.
Nickel coordination in hyperaccumulator plants studied by XANES and EXAFS
Jana Padežnik Gomilšek, Katarina Vogel-Mikuš, Alojz Kodre, Iztok Arčon, 2018, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: ključnih besedah
Ključne besede: nickel, hyperaccumulator plants
Objavljeno: 12.09.2018; Ogledov: 2064; Prenosov: 0
.pdf Polno besedilo (64,89 KB)

4.
Co-evaporation of doped inorganic carrier selective layers for high-performance inverted planar perovskite solar cells
Qiugui Zeng, Zeyu Fan, Beibei Zhang, Yanbo Li, Jiexuan Jiang, Andraž Mavrič, Nadiia Pastukhova, Matjaž Valant, 2022, izvirni znanstveni članek

Opis: Inorganic carrier selective layers (CSLs), whose conductivity can be effectively tuned by doping, offer low-cost and stable alternatives for their organic counterparts in perovskite solar cells (PSCs). Herein, we employ a dual-source electron-beam co-evaporation method for the controlled deposition of copper-doped nickel oxide (Cu:NiO) and tungsten-doped niobium oxide (W:Nb2O5) as hole and electron transport layers, respectively. The mechanisms for the improved conductivity using dopants are investigated. Owing to the improved conductivity and optimized band alignment of the doped CSLs, the all-inorganic-CSLs-based PSCs achieves a maximum power conversion efficiency (PCE) of 20.47%. Furthermore, a thin titanium buffer layer is inserted between the W:Nb2O5 and the silver electrode to prevent the halide ingression and improve band alignment. This leads to a further improvement of PCE to 21.32% and a long-term stability (1200 h) after encapsulation. Finally, the large-scale applicability of the doped CSLs by co-evaporation is demonstrated for the device with 1 cm2 area showing a PCE of over 19%. Our results demonstrate the potential application of the co-evaporated CSLs with controlled doping in PSCs for commercialization.
Najdeno v: ključnih besedah
Povzetek najdenega: ...method for the controlled deposition of copper-doped nickel oxide (Cu:NiO) and tungsten-doped niobium oxide (W:Nb2O5)...
Ključne besede: carrier selective layers, Cu-doped nickel oxide, electron-beam evaporation, perovskite solar cells, W-doped niobium oxide
Objavljeno: 17.03.2022; Ogledov: 448; Prenosov: 7
.pdf Polno besedilo (1,38 MB)
Gradivo ima več datotek! Več...

5.
Tracking the reversibility of Ni redox states in Ni(OH)[sub]2 oxygen evolution electrocatalyst at high current density
Andraž Mavrič, Mattia Fanetti, Matjaž Valant, Chunhua Cui, 2021, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...oxygen evolution reaction, spectroelectrochemistry, nickel hydroxide, stability, amorphization...
Ključne besede: oxygen evolution reaction, spectroelectrochemistry, nickel hydroxide, stability, amorphization
Objavljeno: 29.11.2021; Ogledov: 609; Prenosov: 0
.pdf Polno besedilo (83,51 KB)

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