R. Clerc
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View article: Comparative analysis of optical and numerical models for reflectance and color prediction of monolithic dental resin composites with varying thicknesses
Comparative analysis of optical and numerical models for reflectance and color prediction of monolithic dental resin composites with varying thicknesses Open
Both optical and numerical models offer comparable color prediction accuracy, offering flexibility in model choice. These results help guide decision-making on prediction methods by clarifying their strengths and limitations.
View article: On the validity of two-flux and four-flux models for light scattering in translucent layers: angular distribution of internally reflected light at the interfaces
On the validity of two-flux and four-flux models for light scattering in translucent layers: angular distribution of internally reflected light at the interfaces Open
Optical characterization and appearance prediction of translucent materials are required in many fields of engineering such as computer graphics, dental restorations or 3D printing technologies. In the case of strongly scattering materials…
View article: Performance of two-flux and four-flux models for predicting the spectral reflectance and transmittance factors of flowable dental resin composites
Performance of two-flux and four-flux models for predicting the spectral reflectance and transmittance factors of flowable dental resin composites Open
Eymard's four-flux model enables to predict the color of slices of dental materials within acceptable color differences. Eymard's four-flux model's optical parameters thus describe light-matter interactions in dental materials more accurat…
View article: Estimation of the fluorescence emission spectrum of dental composite resin samples of varying thickness
Estimation of the fluorescence emission spectrum of dental composite resin samples of varying thickness Open
International audience
View article: Redox-active ions unlock substitutional doping in halide perovskites
Redox-active ions unlock substitutional doping in halide perovskites Open
Electrical doping of metal halide perovskites (MPHs) is a key step towards the use of this efficient and cost-effective semiconductor class in modern electronics.
View article: Gamma Ray Effects on Multi-Colored Commercial Light-Emitting Diodes at MGy Level
Gamma Ray Effects on Multi-Colored Commercial Light-Emitting Diodes at MGy Level Open
Light-emitting diodes (LEDs) are of interest for implementation in radiation environments, such as part of illumination systems of radiation-tolerant cameras able to provide images at high doses (>MGy). It is then mandatory to characterize…
View article: Towards quantitative multispectral excitation fluorescence spectroscopy for intraoperative assistance in glioma resection in neurosurgery
Towards quantitative multispectral excitation fluorescence spectroscopy for intraoperative assistance in glioma resection in neurosurgery Open
Glioma is the most common primary brain tumor and the most aggressive in terms of malignancy and progression. The primary treatment is surgery to completely remove the tumor. Currently, a problem persists in the accuracy of lesion delineat…
View article: Predictions of the reflectance factor of translucent layered dental resin composites using two-flux models: assessing the importance of the interface reflectance parameter
Predictions of the reflectance factor of translucent layered dental resin composites using two-flux models: assessing the importance of the interface reflectance parameter Open
Two-flux models are practical tools for predicting the appearance of strongly scattering materials, but may fail to predict the spectral reflectance factor of translucent (i.e. weakly scattering) materials because of the simplifying as-sum…
View article: Light scattering in translucent layers: angular distribution and internal reflections at flat interfaces
Light scattering in translucent layers: angular distribution and internal reflections at flat interfaces Open
International audience
View article: On the minimum thickness of doped electron/hole transport layers in organic semiconductor devices
On the minimum thickness of doped electron/hole transport layers in organic semiconductor devices Open
Doped hole (respectively electron) transport layers [HTLs (respectively ETLs)] are commonly used in evaporated organic devices to achieve high work function hole contact (respectively low work function electron contact) in organic LEDs to …
View article: An analytical solution for McIntyre’s model of avalanche triggering probability for SPAD compact modeling and performance exploration
An analytical solution for McIntyre’s model of avalanche triggering probability for SPAD compact modeling and performance exploration Open
Single photon avalanche diodes (SPADs) are widely used to monitor fast and weak optical signals. The modeling of two main figures of merit of SPAD, namely the dark count rate (DCR) and the photon detection probability, requires one to calc…
View article: Reflectance and transmittance of flowable dental resin composite predicted by the two-flux model: on the importance of analyzing the effective measurement geometry
Reflectance and transmittance of flowable dental resin composite predicted by the two-flux model: on the importance of analyzing the effective measurement geometry Open
International audience
View article: Evaluating edge loss in the reflectance measurement of translucent materials
Evaluating edge loss in the reflectance measurement of translucent materials Open
In many commercial instruments for measuring reflectance, the area illuminated on the measured object is identical to the area from which light is collected. This configuration is suitable for strongly scattering materials such as paper, b…
View article: Physics of trap assisted photomultiplication in vertical organic photoresistors
Physics of trap assisted photomultiplication in vertical organic photoresistors Open
Several experimental groups have reported recently an intriguing high level of gain (Photomultiplication) in vertical organic photoresistance (as well as in other technologies, such as perovskite for instance). This mechanism is sometimes …
View article: Indirect avalanche event detection of Single Photon Avalanche Diode implemented in CMOS FDSOI technology
Indirect avalanche event detection of Single Photon Avalanche Diode implemented in CMOS FDSOI technology Open
International audience
View article: Optimising SHJ solar cell bifaciality towards a monolithic module architecture
Optimising SHJ solar cell bifaciality towards a monolithic module architecture Open
International audience
View article: Lowering the Dark Count Rate of SPAD Implemented in CMOS FDSOI Technology
Lowering the Dark Count Rate of SPAD Implemented in CMOS FDSOI Technology Open
International audience
View article: Device modeling of solution-processed organic solar cells, photodiodes and photo-resistances
Device modeling of solution-processed organic solar cells, photodiodes and photo-resistances Open
International audience
View article: On the front and back side quantum efficiency differences in semi-transparent organic solar cells and photodiodes
On the front and back side quantum efficiency differences in semi-transparent organic solar cells and photodiodes Open
The External Quantum Efficiency (EQE) of semi-transparent Bulk Hetero-Junction (BHJ) organic photodiodes processed in air shows significant differences when measured from the front or back side contacts. This difference was found significa…
View article: Three-dimensional hyperspectral imaging: a new method for human face acquisition
Three-dimensional hyperspectral imaging: a new method for human face acquisition Open
International audience
View article: Insights into the Failure Mechanisms of Organic Photodetectors
Insights into the Failure Mechanisms of Organic Photodetectors Open
This work investigates in detail the reliability of poly(2,7‐carbazole‐alt‐4, 7‐dithienyl‐2,1,3‐benzothiadiazole):phenyl‐C61‐butyric acid methyl ester‐based organic photodiodes (OPDs) under visible light and air exposure. The current–volta…
View article: Performance Simulations of a 72-Cell, a-Si HET Module with Different Tab-Interconnection Geometries
Performance Simulations of a 72-Cell, a-Si HET Module with Different Tab-Interconnection Geometries Open
The use of half-cells is known to be an effective way to increase cell-to-module (CTM) ratio, thanks to lower resistive losses. Multi-wire interconnection allows reducing silver paste consumption; offering better effective shading compared…
View article: Vulnerability and Hardening Studies of Optical and Illumination Systems at MGy Dose Levels
Vulnerability and Hardening Studies of Optical and Illumination Systems at MGy Dose Levels Open
In the framework of the fusion for energy radiation hard imaging system project, the main radiation effects affecting the image quality of a miniaturized complementary metal-oxide-semiconductor-based camera exposed to radiation doses up to…
View article: Vulnerability and Hardening Studies of Optical and Illumination Systems at MGy Dose Levels
Vulnerability and Hardening Studies of Optical and Illumination Systems at MGy Dose Levels Open
International audience