Repository of University of Nova Gorica

Search the repository
A+ | A- | Help | SLO | ENG

Query: search in
search in
search in
search in
* old and bologna study programme

Options:
  Reset


1 - 10 / 10
First pagePrevious page1Next pageLast page
1.
Understanding the in-situ transformation of ▫$Cu_xO$▫ interlayers to increase the water splitting efficiency in NiO/n-Si photoanodes
Chao Feng, Zhi Liu, Huanxin Ju, Andraž Mavrič, Matjaž Valant, Jie Fu, Beibei Zhang, Yanbo Li, 2024, original scientific article

Abstract: The buried interface tens of nanometers beneath the solid-liquid junction is crucial for photocarrier extraction, influencing the overall efficiency of photoelectrochemical devices. Precise characterization of the interfacial properties is essential for device optimization but remains challenging. Here, we directly probe the in situ transformation of a CuxO interlayer at the NiO/n-Si interface by hard X-ray photoelectron spectroscopy. It is found that Cu(I) in the CuxO interlayer gradually transforms to Cu(II) with air exposure, forming an energetically more favorable interface and improving photoanode’s efficiency. Based on this finding, a reactive e-beam evaporation process is developed for the direct deposition of a CuO interlayer, achieving a half-cell solar-to-hydrogen efficiency of 4.56% for the optimized NiO/CuO/n-Si heterojunction photoanode. Our results highlight the importance of precision characterization of interfacial properties with advanced hard X-ray photoelectron spectroscopy in guiding the design of efficient solar water-splitting devices.
Keywords: photo anode, energy harvesting, nickel oxide, interface
Published in RUNG: 01.08.2024; Views: 2111; Downloads: 12
.pdf Full text (2,10 MB)
This document has many files! More...

2.
3.
4.
5.
6.
Topological insulator nanoparticles : material with prospect for photo-thermal applications
Blaž Belec, Nina Kostevšek, Giulia Della Pelle, Sandra Gardonio, Mattia Fanetti, Matija Valant, 2022, published scientific conference contribution abstract

Keywords: topological insulators, nanomaterials, photo-thermal
Published in RUNG: 27.06.2022; Views: 2525; Downloads: 8
URL Link to full text
This document has many files! More...

7.
A single-beam photothermal interferometer for in situ measurements of aerosol light absorption
Bradley Visser, Jannis Röhrbein, Peter Steigmeier, Luka Drinovec, Griša Močnik, Ernest Weingartner, 2020, original scientific article

Abstract: We have developed a novel single-beam photothermal interferometer and present here its application for the measurement of aerosol light absorption. The use of only a single laser beam allows for a compact optical set-up and significantly easier alignment compared to standard dual-beam photothermal interferometers, making it ideal for field measurements. Due to a unique configuration of the reference interferometer arm, light absorption by aerosols can be determined directly – even in the presence of light-absorbing gases. The instrument can be calibrated directly with light-absorbing gases, such as NO2, and can be used to calibrate other light absorption instruments. The detection limits (1σ) for absorption for 10 and 60 s averaging times were determined to be 14.6 and 7.4 Mm−1, respectively, which for a mass absorption cross section of 10 m2 g−1 leads to equivalent black carbon concentration detection limits of 1460 and 740 ng m−3, respectively. The detection limit could be reduced further by improvements to the isolation of the instrument and the signal detection and processing schemes employed.
Keywords: aerosol, aerosol absorption, black carbon, photo-thermal interferometer, climate change
Published in RUNG: 29.12.2020; Views: 4059; Downloads: 78
.pdf Full text (2,44 MB)

8.
New Method for Measuring Angle-Resolved Phases in Photoemission
Daehyun You, Giovanni De Ninno, 2020, original scientific article

Keywords: Photo-emission
Published in RUNG: 27.10.2020; Views: 3328; Downloads: 0
This document has many files! More...

9.
10.
Search done in 0.05 sec.
Back to top