A5069203651- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Perovskite Materials and Applications
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Copper-based nanomaterials and applications
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Silicon and Solar Cell Technologies
- solar cell performance optimization
- Semiconductor materials and interfaces
- Molecular Junctions and Nanostructures
- Fullerene Chemistry and Applications
- Nanowire Synthesis and Applications
- Thin-Film Transistor Technologies
- Solid-state spectroscopy and crystallography
- nanoparticles nucleation surface interactions
- Electron and X-Ray Spectroscopy Techniques
- TiO2 Photocatalysis and Solar Cells
- Organic Light-Emitting Diodes Research
- Advanced battery technologies research
- ZnO doping and properties
- Crystallography and molecular interactions
- Pigment Synthesis and Properties
- Porphyrin and Phthalocyanine Chemistry
Graz University of Technology
2016-2025
University of Arizona
2024
University of British Columbia
2024
Midwestern University
2024
University of Phoenix
2024
University College London
2024
Joanneum Research
2023
Imperial College London
2014-2023
University of Zagreb
2022
Nawi Graz
2016-2020
Abstract In this paper we report on the influence of light and oxygen stability CH 3 NH PbI perovskite‐based photoactive layers. When exposed to both dry air mp‐Al 2 O /CH layers rapidly decompose yielding methylamine, , I as products. We show that degradation is initiated by reaction superoxide (O − ) with methylammonium moiety perovskite absorber. Fluorescent molecular probe studies indicate species generated photoexcited electrons in oxygen. yield generation significantly reduced when...
Germanium halide perovskites are an attractive alternative to lead because of their well-suited optical properties for photovoltaic applications. However, the power conversion efficiencies solar cells based on germanium remained below 0.2% so far, and also, device stability is issue. Herein, we show that modifying chemical composition perovskite, i.e., introducing bromide ions into methylammonium iodide leads a significant improvement cell performance along with slight enhancement...
Abstract In this paper we report on the influence of light and oxygen stability CH 3 NH PbI perovskite‐based photoactive layers. When exposed to both dry air mp‐Al 2 O /CH layers rapidly decompose yielding methylamine, , I as products. We show that degradation is initiated by reaction superoxide (O − ) with methylammonium moiety perovskite absorber. Fluorescent molecular probe studies indicate species generated photoexcited electrons in oxygen. yield generation significantly reduced when...
Activation energy for charge transport, carrier concentration and recombination rate are identified to strongly affect the device characteristics.
Abstract Reducing the trap density within organic solar cells is of vital importance to realize high power conversion efficiency (PCE); however, research focusing on this aspect limited in all‐polymer (All‐PSCs). In work, it found that can be dramatically reduced by simultaneously obtaining miscibility donor and acceptor ordered packing blend films through substituting ethylhexyl with hybrid cyclohexyl‐hexyl side chains design polymer donor. D18‐ChCl has a slightly lower aggregation behavior...
Copper zinc tin sulfide (Cu2ZnSnS4, CZTS) is a very promising alternative to semiconductors based on Ga or In as solar absorber material. CZTS consists of abundant and cheap elements in addition it displays beneficial properties like high optical absorption coefficient an ideal band gap for photovoltaic applications. this contribution, we present the preparation thin films copper from metal salts (copper(I) iodide, zinc(II) acetate, tin(II) chloride) thioacetamide sulfur source by...
Polymer/copper indium sulfide (CIS) nanocomposite solar cells are prepared via a capper free in situ preparation route using copper and xanthates as precursors, which decompose form CIS nanoparticles the polymer matrix during mild thermal treatment. The generate current wide range of spectrum exhibit efficiencies up to 2.8%. Detailed facts importance specialist readers published "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available...
The formation of copper indium disulfide nanoparticles via the oleylamine route using iodide, chloride, and elemental sulfur has been investigated by applying conventional thermal heating as well microwave irradiation. Oleylamine thereby acts a capping ligand solvent. In an initial set experiments, onset reaction was determined to be around 115 °C in situ X-ray study Synchrotron radiation. Using comparatively low synthesis temperatures 120 °C, it is already possible obtain 2-4 nm with both...
Chalcostibite and tetrahedrite thin films are prepared from solution on mesoporous TiO<sub>2</sub> layers photoinduced generation of long-lived charges is detected in these TiO<sub>2</sub>/copper antimony sulfide heterojunctions.
Nickel sulfide thin films and nanocrystals stabilized with oleylamine ligands are prepared from two different nickel xanthates as single-source precursors, which decompose at approx. 180 °C, thereby converted into sulfide. These comprise branched alkyl moieties allowing the choice of a wide range nonpolar organic solvents for processing to well nanoparticles. The crystal structures both compounds show typical square-planar coordination sulfur atoms central atom. thermal decomposition via...
Abstract Organic photovoltaics show great potential for wireless bioelectronics, offering the ability to convert visible‐to‐near‐infrared light into electrical energy. This study investigates stability and biocompatibility of PM6:Y6 bulk heterojunction layers, chosen their efficient charge separation absorption profile compatible with optical transparency skin tissue, under simulated physiological conditions. Biocompatibility is validated using chicken chorioallantoic membrane cytotoxicity...
Bismuth sulphide nanocrystal–polymer hybrid layers are of interest for various optoelectronic, thermoelectric or sensing applications. In this work, we present a ligand-free in situ route the formation Bi2S3 nanorods directly within polymer matrix. For purpose, introduce novel bismuth xanthate (bismuth(III) O-3,3-dimethylbutan-2-yl dithiocarbonate), which is highly soluble non-polar organic solvents. The analysis crystal structure revealed that prepared crystallises monoclinic space group...
In this work, molecular tuning of metal xanthate precursors is shown to have a marked effect on the heterojunction morphology hybrid poly(3-hexylthiophene-2,5-diyl) (P3HT)/CdS blends and, as result, photochemical processes and overall performance in situ fabricated solar cells. A series cadmium complexes synthesized for use sulfide nanoparticles P3HT/CdS The formation CdS domains studied by simultaneous GIWAXS (grazing incidence wide-angle X-ray scattering) GISAXS small-angle scattering),...
Herein, we present a facile solution-based route towards nanostructured, hybrid absorber layers based on tin mono-sulfide (SnS), an emerging, non-toxic material for low-cost and large-scale PV applications. Charge photogeneration properties in the system are studied using transient absorption spectroscopy fabricated solar cells show efficient photocurrent generation over broad spectral range.
With the aim of decreasing number experiments to obtain a perovskite solar cell (PSC) with maximum theoretical efficiency, in this paper, PSC performance was studied using program capacitance simulator (SCAPS-1D). The architecture ITO/TiO2/perovskite/spiro-MeOTAD/Au investigated, while selected mixed cation Rb0.05Cs0.1FA0.85PbI3. analysis based on an experimentally prepared power conversion efficiency ~7%. performance, verified by short-circuit current density (Jsc), open-circuit voltage...
Abstract Electron Beam‐Induced Current (EBIC) measurements were used to produce 2D maps for investigating the homogeneity of solar cells. These are acquired by scanning electron beam a microscope over small area and using programmable sample stage move cell under scan area. The generates electron–hole pairs in much like light does normal operation. Solution‐processed cells where active layer consisted purely inorganic or organic materials measured. Since irreversibly damages material, it was...
Cu(2)ZnSnSe(4) nanoparticles have high potential to be used as ink for printable solar cells. Using transmission electron microscopy we show that these exhibit a broad range of chemical heterogeneity. These results are contrary the interpretation previous experimental work and will considerable impact on development nanoparticles.
Perovskite solar cells with a planar p-i-n device structure offer easy processability at low temperatures, suitable for roll-to-roll fabrication on flexible substrates. Herein we investigate different hole transport layers (solution processed NiOx, sputtered PEDOT:PSS) in perovskite using the triple cation lead halide Cs0.08(MA0.17FA0.83)0.92Pb(I0.83Br0.17)3 as absorber layer. Overall, reproducible cell performances power conversion efficiencies up to 12.8% were obtained solution NiOx layer...