G
Guillaume Gomard
Researcher at Karlsruhe Institute of Technology
Publications - 102
Citations - 1991
Guillaume Gomard is an academic researcher from Karlsruhe Institute of Technology. The author has contributed to research in topics: Photonic crystal & Light scattering. The author has an hindex of 23, co-authored 97 publications receiving 1607 citations. Previous affiliations of Guillaume Gomard include Institut des Nanotechnologies de Lyon & Institut national des sciences Appliquées de Lyon.
Papers
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The role of random nanostructures for the omnidirectional anti-reflection properties of the glasswing butterfly
TL;DR: This work simulates the optical properties with the effective medium theory and transfer matrix method and shows that the random height distribution of pillars significantly reduces the reflection not only for normal incidence but also for high view angles.
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Bioinspired phase-separated disordered nanostructures for thin photovoltaic absorbers
Radwanul Hasan Siddique,Yidenekachew J. Donie,Guillaume Gomard,Sisir Yalamanchili,Tsvetelina Merdzhanova,Uli Lemmer,Hendrik Hölscher +6 more
TL;DR: Inspired by black butterfly scales, self-assembled phase-separated nanostructures form efficient photovoltaic absorbers of disordered nanoholes, which combine efficient light in-coupling and light-trapping properties together with a high angular robustness.
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Combined front and back diffraction gratings for broad band light trapping in thin film solar cell
TL;DR: This paper presents the integration of combined front and back 1D and 2D diffraction gratings with different periods, within thin film photovoltaic solar cells based on crystalline silicon layers, designed considering both the need for incident light absorption enhancement and the technological feasibility.
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Two-dimensional photonic crystal for absorption enhancement in hydrogenated amorphous silicon thin film solar cells
Guillaume Gomard,Emmanuel Drouard,Xavier Letartre,Meng Xianqin,A. Kaminski,Alain Fave,Mustapha Lemiti,Enric Garcia-Caurel,Christian Seassal +8 more
TL;DR: In this paper, a planar planar photonic crystal (PPC) was used for a photovoltaic solar cell design based on a 100 nm thick absorbing layer made of hydrogenated amorphous silicon and patterned as a two-dimensional planar PPC.
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Absorbing one-dimensional planar photonic crystal for amorphous silicon solar cell
Ounsi El Daif,Emmanuel Drouard,Guillaume Gomard,A. Kaminski,Alain Fave,Mustapha Lemiti,Sungmo Ahn,Sihan Kim,Pere Roca i Cabarrocas,Heonsu Jeon,Christian Seassal +10 more
TL;DR: This work reports on the absorption of a 100nm thick hydrogenated amorphous silicon layer patterned as a planar photonic crystal (PPC), using laser holography and reactive ion etching, which may be at the basis of new photovoltaic solar cells.