H2020Индивидуална стипендия2016–2018

MULTI2DSWITCH · MULTIfunctional optoelectronic devices based on hybrid heterostructures of 2D materials and photochromic SWITCHes

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2016-08-21 → 2018-08-20
Финансиране от ЕС: 173 076 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Оптоелектронни устройства се създават чрез комбиниране на двуизмерни материали, като графен, със специални молекули, които променят състоянието си под въздействието на светлина. Това помага за подобряване на работата на микро- и нанотехнологиите чрез управление на физичните свойства на тези материали.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

MULTIfunctional optoelectronic devices based on hybrid heterostructures of 2D materials and photochromic SWITCHes

Two-dimensional (2D) materials, such as graphene and transition metal dichalcogenides (TMDs), have attracted a great deal of attention due to their outstanding physical properties that can be conveniently exploited in a wide range of micro- and nanotechnologies. Nowadays, a number of physico-chemical approaches are being developed for tailoring various properties of 2D materials in order to improve the performance of existing 2D devices for various technologically applications, which also include the design of multifunctional technologies. Within this framework, MULTI2DSWITCH aimed at implementing novel multifunctional optoelectronic devices based on heterostructures of switchable molecular systems (i.e. photochromics) and 2D materials, such as semimetallic graphene and semiconducting TMDs. Photochromic molecules – such as azobenzenes, diarylethenes and spiropyrans – are special photosensitive molecules that undergo a reversible photochemical isomerization process upon exposure to UV/visible light, i.e. they switch between two (meta)stable states with markedly different properties, resulting in a modification of the macroscopic properties of the adjacent 2D semiconductors. Implementing 2D-material/photochromic devices required accomplishing the following three objectives: (1) developing sound chemical approaches for “bridging” 2D crystals and functional molecules, (2) integrating the newly developed hybrid materials into practical devices, and (3) optimizing the device architecture and properties (e.g. dielectric/semiconductor interface, metal contacts) to boost the performance in optoelectronic applications. Such objectives were pursued by making use of a plethora of experimental methodologies belonging to different scientific disciplines, such as (supra)molecular chemistry, solid-state physics and device engineering. Besides demonstrating new photoswitchable transistors based on molecular systems and 2D semiconductors, MULTI2DSWITCH provided new fundamental knowledge in the key field of 2D materials-based multifunctional electronics.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

MULTI2DSWITCH will offer an extremely talented and promising young researcher, with a PhD in physics and an extraordinary track record, world-class training through research in the cross-disciplinary and supra-sectorial field of 2D materials (2DMs) based multifunctional electronics. The proposed research lies at the interface between physics, chemistry and electrical engineering, in the interdisciplinary realms of supramolecular sciences, materials- and nano-science. The overall mission is to train the fellow to become an independent scientist and to prepare him for a leading position in academia or industry. MULTI2DSWITCH’s research programme targets a fundamental breakthrough in the field 2DMs by using a combination of bottom-up and top-down methods to design ultraflat, flexible and photoswitchable heterostructures of 2D crystals and molecular self-assembled monolayers (SAMs). In order to do so, a highly-ordered SAM of photochromic molecules (azobenzenes, diarylethenes or spiropyrans) is prepared on the surface of a graphene layer, by means of low-cost solution processing techniques. The graphene/SAM bilayer is subsequently encapsulated with a 2D semiconductor from the family of transition metal dichalcogenides (TMDs) using the flake-transfer techniques commonly employed for van-der-Waals heterostructure assembly. The photo-tunable properties of the newly prepared hybrid heterostructures will be exploited to develop a series of proof-of-concept multifunctional devices, including optically-switchable diodes and field-effect transistors (FETs), and optically-programmable memory cells. Thanks to the high-degree of mechanical flexibility of both the 2D crystals and the molecular SAMs, these devices will be suitable for integration on flexible substrates. Ultimately, MULTI2DSWITCH aims at developing high-performance flexible multifunctional optoelectronic devices with figures of merit greatly surpassing those of the corresponding state-of-the-art organic devices.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITE DE STRASBOURG · StrasbourgКоординаторФранция