Journal ArticleDOI
Disorder and the optical absorption edge of hydrogenated amorphous silicon
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This article is published in Le Journal De Physique Colloques.The article was published on 1981-10-01. It has received 120 citations till now. The article focuses on the topics: Amorphous silicon & Absorption edge.read more
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Organometallic Halide Perovskites: Sharp Optical Absorption Edge and Its Relation to Photovoltaic Performance
Stefaan De Wolf,Jakub Holovsky,Soo-Jin Moon,Philipp Löper,Bjoern Niesen,Martin Ledinsky,Martin Ledinsky,F.-J. Haug,Jun-Ho Yum,Christophe Ballif +9 more
TL;DR: Using highly sensitive photothermal deflection and photocurrent spectroscopy, the absorption spectrum of CH3NH3PbI3 perovskite thin films at room temperature is measured, finding a high absorption coefficient with particularly sharp onset and a compositional change of the material.
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Temperature Dependence of the Urbach Energy in Lead Iodide Perovskites
Martin Ledinsky,Tereza Schönfeldová,Jakub Holovský,Erkan Aydin,Zdeňka Hájková,Lucie Landová,Neda Neykova,Antonín Fejfar,Stefaan De Wolf +8 more
TL;DR: This work elucidates the temperature dependence of such spectra for methylammonium lead iodide (CH3NH3PbI3), with specific attention to its sub-band gap absorption edge (often termed Urbach energy), and finds clear further evidence for the universality of the correlation between theUrbach energy and open-circuit voltage losses of solar cells.
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Correlation between Electronic Defect States Distribution and Device Performance of Perovskite Solar Cells
Giovanni Landi,Heinz C. Neitzert,Carlo Barone,C. Mauro,Felix Lang,Steve Albrecht,Bernd Rech,Sergio Pagano +7 more
TL;DR: Random current fluctuations measured at different temperatures and for different illumination levels are used to understand the charge carrier kinetics in methylammonium lead iodide CH3NH3PbI3‐based perovskite solar cells and reveal that in perovSkite solar Cells the recombination kinetics is strongly influenced by the electron–phonon interactions.
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Optical properties of solution grown PVDF-ZnO nanocomposite thin films
TL;DR: In this paper, the optical properties of nanocomposite thin films were investigated using EDX, UV-Visible spectroscopy and Raman spectrographs, and the results imply that the effectiveness in shielding of UV radiation is due to absorption capacity of ZnO nanoparticles incorporated in PVDF.
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Visible Light Metasurfaces Based on Single-Crystal Silicon
TL;DR: In this paper, the resonant scattering peaks of individual single-crystal silicon nanoridges are characterized, and a stochastic optimization approach is used to design high-efficiency metagratings and lenses based on nanoridge arrays, operating at visible wavelengths, using an optimization approach.