A5020393409- Thin-Film Transistor Technologies
- Perovskite Materials and Applications
- ZnO doping and properties
- Silicon and Solar Cell Technologies
- Plasmonic and Surface Plasmon Research
- solar cell performance optimization
- Electronic and Structural Properties of Oxides
- Nanowire Synthesis and Applications
- Silicon Nanostructures and Photoluminescence
- Quantum Dots Synthesis And Properties
- Transition Metal Oxide Nanomaterials
- Magnetic and transport properties of perovskites and related materials
- Optical Polarization and Ellipsometry
- Nonlinear Optical Materials Studies
- Electron and X-Ray Spectroscopy Techniques
- Advanced Sensor and Energy Harvesting Materials
- Nonlinear Optical Materials Research
- Conducting polymers and applications
- Semiconductor materials and devices
- Gold and Silver Nanoparticles Synthesis and Applications
- Photonic Crystals and Applications
- Chalcogenide Semiconductor Thin Films
- Optical properties and cooling technologies in crystalline materials
Caelum Research Corporation (United States)
2024
Nazarbayev University
2024
University of Twente
2019-2022
École Polytechnique
2022
Centre National de la Recherche Scientifique
2022
Fraunhofer Institute for Solar Energy Systems
2022
Institute of Inorganic Chemistry of the Slovak Academy of Sciences
2019
Moscow Engineering Physics Institute
2018
IMEC
2018
Abstract Parasitic absorption in transparent electrodes is one of the main roadblocks to enabling power conversion efficiencies (PCEs) for perovskite‐based tandem solar cells beyond 30%. To reduce such losses and maximize light coupling, broadband transparency should be improved, especially at front device. Here, excellent properties Zr‐doped indium oxide (IZRO) applications, with improved near‐infrared (NIR) response, compared conventional tin‐doped (ITO) electrodes, are shown. Optimized...
Co-axial electrospinning was applied for the structuring of non-woven webs TiO2 nanofibers loaded with Ag, Au, and CuO nanoparticles. The composite layers were tested in an electrochromic half-cell assembly. A clear correlation between nanoparticle composition effect nanofibrous is observed: Ag reveals a black-brown color, Au shows dark-blue dark-green color. For applications, Au/TiO2 layer most promising choice, color modulation time 6 s, transmittance 40%, coloration efficiency 20 cm2/C,...
Abstract Sputtered transparent conducting oxides (TCOs) are widely accepted electrodes for several types of high‐efficiency solar cells. However, the different sputtering yield atoms makes stoichiometric transfer target material challenging multi‐compounds. Additionally, high kinetic energies arriving species may damage sensitive functional layers beneath. Conversely, pulsed laser deposition (PLD) is operated at higher pressures promoting thermalization particles. This leads to and...
The presence of a non-optically active polymorph (yellow-phase) competing with the optically (black $\gamma$-phase) at room temperature in CsSnI3 and susceptibility Sn to oxidation, represent two biggest obstacles for exploitation optoelectronic devices. Here room-temperature single-source vacuum deposition smooth black $\gamma$ - thin films is reported. This has been done by fabricating solid target completely solvent-free mixing CsI SnI2 powders isostatic pressing. By controlled laser...
Halide perovskite and silicon heterojunction solar cells present sensitive contact layers prone to damage during ITO deposition. We study the effect of pulsed laser deposition pressure on mitigation improved cell performance.
The advancements in halide perovskite materials, celebrated for their exceptional optoelectronic properties, have not only led to a remarkable increase the efficiency of solar cells (PSCs) but also opened avenues development semitransparent devices. Such devices are ideally suited integration into building facades and use tandem cell configurations. However, depositing transparent electrodes (TEs) on top charge transport layers PSC poses significant challenges. Physical vapor deposition...
Transparent conducting oxides (TCOs) have recently attracted much attention in the fields of optics and photonics because their outstanding linear nonlinear optical response near-zero permittivity spectral region. The these materials can be further enhanced by optimizing material properties through fabrication. In particular, two important TCO parameters affecting strength interactions are mobility effective mass free electrons. this work, we fabricate epitaxial, highly-textured,...
Abstract Strain and interactions at grain boundaries during solid-phase crystallization are known to play a significant role in the functional properties of polycrystalline materials. However, elucidating three-dimensional nanoscale morphology, kinetics, strain under realistic conditions is challenging. Here, we image single-grain growth amorphous-to-polycrystalline transition technologically relevant transparent conductive oxide film In 2 O 3 :Zr with situ Bragg coherent X-ray diffraction...
Near-infrared absorption in transparent conducting oxides (TCOs) is usually caused by electronic intraband transition at high doping levels. Improved infrared transparency commonly explained enhanced drift mobility these TCOs. Here, an alternative cause behind the of La-doped barium stannate (LBSO) electrodes presented. Following Drude model formalism, we reconstructed spectrally resolved dielectric permittivity for a set thin films with different free electron concentrations. A comparison...
Abstract Transparent conducting oxides (TCOs) exhibit interesting linear and nonlinear optical properties in their epsilon‐near‐zero (ENZ) region. Studies so far have mostly focused on exploring the response of a limited number these materials. It is therefore important to investigate new TCOs that could offer improved ENZ properties. This work reports for first time measurements responses polycrystalline indium‐zirconium oxide (IZrO) spectral The fabricated IZrO films high mobility (>60...
One of the promising ways to increase efficiency silicon heterojunction (SHJ) cells is replace doped hydrogenated amorphous (a-Si:H) contact layer by microcrystalline (µc-Si:H) which has better suited opto-electrical properties. In this work, we report on development a plasma-enhanced chemical vapor deposition process for µc-Si:H. We demonstrate an n-type µc-Si:H with high crystalline fraction and low parasitic absorption. The developed implemented as front electron SHJ cell. A significant...
Broadband-transparent and highly-conductive electrodes are key to avoid parasitic absorption in solar cells. We show that Zr-doped indium oxide grown by both sputtering pulsed laser deposition tackle these requirements allowing improved efficiencies photovoltaics.
Abstract Strain and interactions at grain boundaries during solid-phase crystallization are known to play a significant role in the functional properties of polycrystalline materials. However, elucidating three-dimensional nanoscale morphology, kinetics, strain under realistic conditions is challenging. Here, we image single-grain growth amorphous-to-polycrystalline transition technologically relevant transparent conductive oxide (TCO) film In 2 O 3 :Zr with in-situ Bragg coherent X-ray...
We report the linear and nonlinear optical properties of Zirconium-doped Indium Oxide film in near-zero permittivity spectral region. observe a relatively broadband response, which could be due to gradient permittivity.
Pulsed laser deposition (PLD) has been recently proposed as an alternative low-damage physical vapor technique to deposit Transparent Conducting Oxides (TCOs) onto sensitive functional layers such required in various solar cells. Here we studied the role of pressure during PLD TCO with identical sheet resistance (60 Ω/) on final silicon heterojunction (SHJ) cell performance. Solar cells Sn-doped In2O3 (ITO) at all conditions maintained high passivation quality but increased pressures lead...