EREMON · Electronic response of molybdenum-based nanowires
6РП — Действия „Мария Кюри“
- Период
- 2006-11-01 → 2008-10-31
- Финансиране от ЕС
- 115 084 €
- Участници
- 1
- Схема
- EIF
Линиите свързват координатора с партньорите.
Накратко на български
Наножиците от молибден се изследват чрез фемтосекундна спектроскопия, за да се разбере как електроните в тях реагират на светлина. Тези данни помагат за разработването на по-бърза електроника и нови оптични устройства, като например абсорбатори на светлина.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Final Activity Report Summary - EREMON (Electronic response of molybdenum-based nanowires)
MoSIx are semimetallic nanowires (NWs) that have been tested already among others as molecular scale connectors, bio- and chemosensors, electrodes for Li ion batteries, and field emission tips. Due to their particularly low interaction with each other and their environment (hence their application also in lubricants), they are currently the 'most one-dimensional' material we know. Optical and electronic applications of any material are based on the non-equilibrium behaviour of electrons, which was the main focus of this project. Femtosecond spectroscopy yielded a complex relaxation behaviour consisting of intraband relaxation during few 100 fs, followed by a cascade of interband transitions. The findings reveals potential for non-linear optical applications such as optical limiting and saturable absorbers. In electronics, the fast initial steps of the relaxation cascade enable high-frequency applications, while the final interband transition is slower and can buffer information for a few ns. Additionally, in the course of the project we found out that optical spectroscopy can also be very instrumental for the preparation and characterisation of NW dispersions.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Nanoscale integrated electronics requires building blocks with controlled functional properties. Tertiary inorganic nanowires made up of molybdenum, sulphur and iodine (MoSI) are a newly emerging class of one-dimensional objects with a straightforward, sca lable synthesis. In nanoelectronics they are to date the only viable alternative to Carbon nanotubes (CNTs). Contrarily to CNTs, they are soluble in a variety of solvents and tend to be monodisperse with all nanowires of a given stoichiometry having identical electronic properties. In order to exploit the functionality of 1D materials in possible nanoelectronic devices such as single-electron or ballistic transistors, the non-equilibrium electron dynamics has to be understood.The goal of this project is a comprehensive investigation of the fast and slow electronic processes occurring in MoSI nanowires. This means applying an external stimulus to drive the electrons out of their equilibrium distribution and monitoring the relaxation processes. The focus is o n light and electric fields/currents as external stimuli. Specifically the project addresses ultra-fast relaxation processes, long lived excited states and the effect of electric fields. The processes will be investigated as a function of temperature (room temperature to liquid helium temperature) and excitation density.The tools for investigation will be ultra-fast pump-probe spectroscopy, photomodulation and electromodulation as well as a combination of pump-probe with further modulation of parameters such as an applied field. The detection will cover the visible, most of the infrared and THz spectral ranges.
Оригинален текст от CORDIS (на английски).
Участници
- JOZEF STEFAN INSTITUTE · LJUBLJANAКоординаторСловения
Връзки
Данни: CORDIS, © Европейски съюз