Concept

Hétérojonction

Publications associées (479)

Revealing Large-Scale Homogeneity and Trace Impurity Sensitivity of GaAs Nanoscale Membranes

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Alessandro Surrente, Francesca Amaduzzi, Philippe Leroux

III-V nanosttuctures have the potential to revolutionize optoelectronics and energy harvesting. For this to become a reality, critical issues such as reproducibility and sensitivity to defects should be resolved. By discussing the optical properties of mol ...

American Chemical Society2017

Building Composite Iron-Manganese Oxide Flowerlike Nanostructures: A Detailed Magnetic Study

Davide Deiana

Here we show that it is possible to produce different magnetic core multiple shell heterostructures from monodisperse Fe3O4 spherical magnetic seeds by finely controlling the amount of a manganese precursor and using, in a smart and simple way, a cation-ex ...

Amer Chemical Soc2017

Organic-inorganic hybrid tandem bulk heterojunction ITO/A1Pc:H2Pc/n-Si/Al photoelectric cell

Ulf Anders Hagfeldt

Organic-inorganic hybrid tandem heterojunction ITO/AIPc:H2Pc/n-Si/Al photoelectric cell was fabricated by a pressing technology using preliminary vapor deposited bulk heterojunction films of mixed aluminum-phthalocyanine (AIPc) and metal free phthalocyanin ...

Natl Inst Optoelectronics2017

Microstructure Engineering in Multi-material Fibers

Wei Yan

The integration of conducting and semiconducting architectures within thermally drawn thin and flexible fibers is emerging as a versatile platform for smart sensors and imaging systems, medical and biological probes, energy harvesting and advanced textile. ...

EPFL2017

The growth and optical properties of III-V nanostructures grown by Molecular Beam Epitaxy

Gözde Tütüncüoglu

This thesis is dedicated to the growth and characterization of the optoelectronic properties of III-V semiconductor nanostructures namely nanowires and nanoscale membranes. III-V semiconductors possess promising intrinsic properties like direct band gap, h ...

EPFL2017

Atomically Thin Two-dimensional Materials Grown by Molecular Beam Epitaxy

Ming-Wei Chen

Atomically thin two-dimensional (2D) materials have attracted great interest due to their unique optoelectronic properties which are very different from their bulk counterparts. Most of the proof-of-concept devices, however, have been demonstrated using th ...

EPFL2017

Probing the Interlayer Exciton Physics in a MoS2/MoSe2/MoS2 van der Waals Heterostructure

Andras Kis, Dumitru Dumcenco, Yen-Cheng Kung, Alessandro Surrente

Stacking atomic monolayers of semiconducting transition metal dichalcogenides (TMDs) has emerged as an effective way to engineer their properties. In principle, the staggered band alignment of TMD heterostructures should result in the formation of interlay ...

American Chemical Society2017

Dynamics of Electronic and Ionic Charges in Cyanine Organic Semiconductor Devices

Sandra Christina Jenatsch

Organic semiconductor materials have been widely applied in optoelectronic devices to replace their inorganic counterparts and explore new fields of applications. Due to their high extinction coefficients, chemical tunability and solubility, cyanine dyes a ...

EPFL2017

Ultrafast atomic-scale visualization of acoustic phonons generated by optically excited quantum dots

Fabrizio Carbone, Giovanni Maria Vanacore

Understanding the dynamics of atomic vibrations confined in quasi-zero dimen- sional systems is crucial from both a fundamental point-of-view and a technologi- cal perspective. Using ultrafast electron diffraction, we monitored the lattice dynamics of GaAs ...

2017

Nature of electron trap states under inversion at In0.53Ga0.47As/Al2O3 interfaces

Alfredo Pasquarello, Davide Colleoni

In and Ga impurities substitutional to Al in the oxide layer resulting from diffusion out of the substrate are identified as candidates for electron traps under inversion at In0.53Ga0.47As/Al2O3 interfaces. Through density-functional calculations, these de ...

American Institute of Physics2017

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search