A5029570386- Quantum Dots Synthesis And Properties
- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- TiO2 Photocatalysis and Solar Cells
- Solid-state spectroscopy and crystallography
- Advanced Photocatalysis Techniques
- Magnetic and transport properties of perovskites and related materials
- Advanced Nanomaterials in Catalysis
- Thermodynamic properties of mixtures
- Nanocluster Synthesis and Applications
- Thermal Expansion and Ionic Conductivity
- Analytical Chemistry and Chromatography
- Molecular Junctions and Nanostructures
- Electronic and Structural Properties of Oxides
- Semiconductor Quantum Structures and Devices
- Microwave Dielectric Ceramics Synthesis
- ZnO doping and properties
- Copper-based nanomaterials and applications
- Spectroscopy and Quantum Chemical Studies
- Crystallography and molecular interactions
- Near-Field Optical Microscopy
KTH Royal Institute of Technology
2018-2024
Stockholm Environment Institute
2018-2021
University of Novi Sad
2017
The degradation of lead halides perovskites under X-ray irradiation follows different pathways and has kinetics depending on if the radiolysis organic cation or halide cage is dominant.
Surface properties of colloidal quantum dots (CQDs) are critical for the transportation and recombination photoinduced charge carrier in CQD solar cells, therefore dominating photovoltaic performance. Herein, PbS passivated using liquid-state ligand exchange (LSLX) solid-state (SSLX) strategies detail investigated photoelectron spectroscopy (PES), cell devices prepared to understand link between surface function. PES different energies soft hard X-ray regime is applied study bulk CQDs,...
Time-resolved photoelectron spectroscopy can give insights into carrier dynamics and offers the possibility of element site-specific information through measurements core levels. In this paper, we demonstrate that method access electrons in PbS quantum dots over a wide time window spanning from pico- to microseconds single experiment carried out at synchrotron facility BESSY II. The is sensitive small changes level positions. Fast low pump fluences are enabled by use laser lower repetition...
A series of heteroleptic Cu(I) diimine complexes with different ancillary ligands and 6,6'-dimethyl-2,2'-bipyridine-4,4'-dibenzoic acid (dbda) as the anchoring ligand were self-assembled on TiO2 surfaces used dyes for dye-sensitized solar cells (DSSCs). The binding to surface was studied by hard X-ray photoelectron spectroscopy a bromine-containing complex, confirming complex formation. performance all assessed rationalized basis their respective ligand. DSSC photocurrent-voltage...
Lead halide perovskite solar cells have reached power conversion efficiencies during the past few years that rival those of crystalline silicon cells, and there is a concentrated effort to commercialize them. The use gold electrodes, current standard, prohibitively costly for commercial application. Copper promising low-cost electrode material has shown good stability in with selective contacts. Furthermore, it potential be self-passivating through formation CuI, copper salt which also used...
Visible light-induced changes in mixed-ion perovskites with different compositions are investigated using photoelectron spectroscopy.
A heterojunction is the key junction for charge extraction in many thin film solar cell technologies. However, structure and band alignment of operating device are often difficult to predict from calculations and, due complexity narrow thickness interface, measure directly. In this study, we demonstrate a technique direct measurement interfacial electric field variations fully functional lead halide perovskite under conditions using hard X-ray photoelectron spectroscopy (HAXPES). We describe...
The development of p-type dye-sensitized solar cells (p-DSSCs) offers an opportunity to assemble tandem photoelectrochemical with higher efficiencies than TiO2-based photoanodes, pioneered by O'Regan and Grätzel [Nature 353, 737-740 (1991)]. This paper describes investigation into the behavior at interfaces in p-DSSCs, using a series BODIPY dyes, BOD1-3. three dyes have different structural electronic properties, which lead performances p-DSSCs. We applied photoelectron spectroscopy...
The anodic electrodeposition method is investigated as an alternative technique for the preparation of a titanium oxide blocking underlayer perovskite solar cells.
A detailed understanding of the surface and interface properties lead halide perovskites is interest for several applications, in which these materials may be used. To develop this understanding, study clean crystalline surfaces can an important stepping stone. In work, electronic structure two different perovskite single crystal compositions (MAPbI3 Csx FA1-x PbI3 ) are investigated using synchrotron-based soft X-ray photoelectron spectroscopy (PES), molecular dynamics simulations, density...
The chemical composition, electronic structure, and stability of quantum dots with iodide bromide ligands are investigated photoelectron spectroscopy compared to reference samples.
The charge separation and recombination dynamics at different interfaces in a quantum dot solar cell are investigated by time-resolved photoelectron spectroscopy.
By measuring the resonant S-KLL Auger decay we investigate attosecond charge transfer in PbS quantum dots of different sizes. The results show both intra- and interparticle transfer, where former shows a strong QD size dependence.
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to Probing and Controlling Surface Passivation of PbS Quantum Dot Solid for Improved Performance Infrared Absorbing Solar CellsXiaoliang Zhang*Xiaoliang ZhangMore by Xiaoliang Zhanghttp://orcid.org/0000-0002-2847-7359, Ute B. CappelUte CappelMore Cappelhttp://orcid.org/0000-0002-9432-3112, Donglin JiaDonglin JiaMore Jia, Qisen ZhouQisen ZhouMore Zhou, Juan DuJuan DuMore Du, Tamara...