Institution
University of Rennes
Education•Rennes, France•
About: University of Rennes is a education organization based out in Rennes, France. It is known for research contribution in the topics: Population & Crystal structure. The organization has 18404 authors who have published 40374 publications receiving 995327 citations.
Topics: Population, Crystal structure, Ruthenium, Catalysis, Antenna (radio)
Papers published on a yearly basis
Papers
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TL;DR: A series of new structurally diverse hybrid lead bromide perovskites that have broad-band emission at room temperature and the highest photoluminescence quantum yield is reported, owing to its unique structure that allows efficient charge carrier relaxation and light emission.
Abstract: Hybrid organic–inorganic halide perovskites are under intense investigations because of their astounding physical properties and promises for optoelectronics. Lead bromide and chloride perovskites exhibit intrinsic white-light emission believed to arise from self-trapped excitons (STEs). Here, we report a series of new structurally diverse hybrid lead bromide perovskites that have broad-band emission at room temperature. They feature Pb/Br structures which vary from 1D face-sharing structures to 3D corner- and edge-sharing structures. Through single-crystal X-ray diffraction and low-frequency Raman spectroscopy, we have identified the local distortion level of the octahedral environments of Pb2+ within the structures. The band gaps of these compounds range from 2.92 to 3.50 eV, following the trend of “corner-sharing < edge-sharing < face-sharing”. Density functional theory calculations suggest that the electronic structure is highly dependent on the connectivity mode of the PbBr6 octahedra, where the edge...
294 citations
TL;DR: In this paper, the authors quantify the plausible time scales of clastic sediment supply variations at the entrance of sedimentary basins based on the sedimentary system concept, which simplifies natural systems by dividing them into three zones of dominant processes: the erosion, the transfer, and the sedimentation subsystems.
294 citations
TL;DR: In this paper, the concentrations of the platinum-group elements (PGE) Ir, Ru, Pt, and Pd were determined in 18 mantle-derived basalts from a variety of tectonic settings and six komatiites from three locations.
293 citations
TL;DR: In this article, heavy metals adsorbents were prepared by co-condensation of tetraethoxysilane and functionalized trialkoxysileane RSi(OR′)3.
293 citations
TL;DR: In this paper, the authors investigated time harmonic Maxwell equations in heterogeneous media, where the permeability μ and the permittivity e are piecewise constant and the associated boundary value problem can be interpreted as a transmission problem.
Abstract: We investigate time harmonic Maxwell equations in heterogeneous media, where the permeability μ and the permittivity e are piecewise constant. The associated boundary value problem can be interpreted as a transmission problem. In a very natural way the interfaces can have edges and corners. We give a detailed description of the edge and corner singularities of the electromagnetic fields.
293 citations
Authors
Showing all 18470 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Philippe Froguel | 166 | 820 | 118816 |
| Bart Staels | 152 | 824 | 86638 |
| Yi Yang | 143 | 2456 | 92268 |
| Geoffrey Burnstock | 141 | 1488 | 99525 |
| Shahrokh F. Shariat | 118 | 1637 | 58900 |
| Lutz Ackermann | 116 | 669 | 45066 |
| Douglas R. MacFarlane | 110 | 864 | 54236 |
| Elliott H. Lieb | 107 | 512 | 57920 |
| Fu-Yuan Wu | 107 | 367 | 42039 |
| Didier Sornette | 104 | 1295 | 44157 |
| Stefan Hild | 103 | 452 | 68228 |
| Pierre I. Karakiewicz | 101 | 1207 | 40072 |
| Philippe Dubois | 101 | 1098 | 48086 |
| François Bondu | 100 | 440 | 69284 |
| Jean-Michel Savéant | 98 | 517 | 33518 |