Search Results - "Holovský, Jakub"
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Life on the Urbach Edge
Published in The journal of physical chemistry letters (25-08-2022)“…The Urbach energy is an expression of the static and dynamic disorder in a semiconductor and is directly accessible via optical characterization techniques…”
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Raman Spectroscopy of Organic–Inorganic Halide Perovskites
Published in The journal of physical chemistry letters (05-02-2015)“…Micro-Raman spectroscopy provides laterally resolved microstructural information for a broad range of materials. In this Letter, we apply this technique to…”
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3
Temperature Dependence of the Urbach Energy in Lead Iodide Perovskites
Published in The journal of physical chemistry letters (21-03-2019)“…To gain insight into the properties of photovoltaic and light-emitting materials, detailed information about their optical absorption spectra is essential…”
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4
Silicon heterojunction solar cells: Excellent candidate for low light illuminations
Published in Solar energy materials and solar cells (15-08-2024)“…The current solar cells and modules are marketed according to the behaviour at standard test conditions (STC), however, these devices are more often operated…”
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Concentration-Dependent Impact of Alkali Li Metal Doped Mesoporous TiO2 Electron Transport Layer on the Performance of CH3NH3PbI3 Perovskite Solar Cells
Published in Journal of physical chemistry. C (15-08-2019)“…TiO2 is most commonly employed as an electron transport layer (ETL) in mesoscopic n–i–p perovskite solar cells (PSCs). However, the low electron mobility, low…”
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Impact of Cation Multiplicity on Halide Perovskite Defect Densities and Solar Cell Voltages
Published in Journal of physical chemistry. C (17-12-2020)“…Metal-halide perovskites feature very low deep-defect densities, thereby enabling high operating voltages at the solar cell level. Here, by precise extraction…”
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Quantitative Analysis of Nanorough Hydrogenated Si(111) Surfaces through Vibrational Spectral Assignment by Periodic DFT Calculations
Published in Journal of physical chemistry. C (19-05-2022)“…In this work, we use periodic density functional theory (periodic DFT) to rigorously assign vibrational spectra measured on nanorough wet-processed…”
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New metric for carrier selective contacts for silicon heterojunction solar cells
Published in Solar energy (15-09-2022)“…•Understand the selective contacts of silicon heterojunction solar cells through band alignment, Fermi level and barrier height.•Development of a new matric…”
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FTIR Measurement of the Hydrogenated Si(100) Surface: The Structure-Vibrational Interpretation by Means of Periodic DFT Calculation
Published in Journal of physical chemistry. C (06-05-2021)“…The periodic density functional theory (periodic DFT) method was employed for the interpretation of infrared radiation spectra (IR spectra) measured for the…”
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10
Radiative Efficiency Limit with Band Tailing Exceeds 30% for Quantum Dot Solar Cells
Published in ACS energy letters (10-11-2017)“…Thin films of colloidal quantum dots (QDs) are promising solar photovoltaic (PV) absorbers in spite of their disordered nature. Disordered PV materials face a…”
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Thin-film limit formalism applied to surface defect absorption
Published in Optics express (15-12-2014)“…The thin-film limit is derived by a nonconventional approach and equations for transmittance, reflectance and absorptance are presented in highly versatile and…”
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12
Lead Halide Residue as a Source of Light-Induced Reversible Defects in Hybrid Perovskite Layers and Solar Cells
Published in ACS energy letters (13-12-2019)“…Advanced characterization methods avoiding transient effects in combination with solar cell performance monitoring reveal details of reversible light-induced…”
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13
A New View of Microcrystalline Silicon: The Role of Plasma Processing in Achieving a Dense and Stable Absorber Material for Photovoltaic Applications
Published in Advanced functional materials (11-09-2012)“…To further lower production costs and increase conversion efficiency of thin‐film silicon solar modules, challenges are the deposition of high‐quality…”
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14
Pulsed laser deposition of high-transparency molybdenum oxide thin films
Published in Vacuum (01-12-2021)“…Molybdenum oxide is an intensively studied material, thanks to its high bandgap, high work function, and potentially also photochromism, plasmonic properties,…”
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15
Experimental quantification of useful and parasitic absorption of light in plasmon-enhanced thin silicon films for solar cells application
Published in Scientific reports (03-03-2016)“…A combination of photocurrent and photothermal spectroscopic techniques is applied to experimentally quantify the useful and parasitic absorption of light in…”
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Below the Urbach Edge: Solar Cell Loss Analysis Based on Full External Quantum Efficiency Spectra
Published in ACS energy letters (14-07-2023)“…We suggest a new solar cell loss analysis using the external quantum efficiency (EQE) measured with sufficiently high sensitivity to also account for defects…”
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Photocurrent Spectroscopy of Perovskite Layers and Solar Cells: A Sensitive Probe of Material Degradation
Published in The journal of physical chemistry letters (16-02-2017)“…Optical absorptance spectroscopy of polycrystalline CH3NH3PbI3 films usually indicates the presence of a PbI2 phase, either as a preparation residue or due to…”
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18
Effect of the thin-film limit on the measurable optical properties of graphene
Published in Scientific reports (28-10-2015)“…The fundamental sheet conductance of graphene can be directly related to the product of its absorption coefficient, thickness and refractive index. The same…”
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Optical characterization of low temperature amorphous MoOx, WOX, and VOx prepared by pulsed laser deposition
Published in Thin solid films (01-01-2020)“…•Amorphous MoOx, WOx, and VOx were prepared by pulsed laser deposition.•Films demonstrate high transparency and high work function.•Oxygen pressure is a key…”
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Amorphous/Crystalline Silicon Interface Stability: Correlation between Infrared Spectroscopy and Electronic Passivation Properties
Published in Advanced materials interfaces (01-10-2020)“…Ultrathin layers of hydrogenated amorphous silicon (a‐Si:H), passivating the surface of crystalline silicon (c‐Si), are key enablers for high‐efficiency…”
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