H2020Индивидуална стипендия2019–2021

CHEM2D · Chemistry of 2D materials: Intercalation and surface functionalization

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

Период: 2019-06-01 → 2021-11-14
Финансиране от ЕС: 158 122 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Двуизмерните материали се променят чрез добавяне на частици между слоевете им или модификация на повърхността им. Това позволява прецизен контрол върху техните електрически и оптични свойства за интегрирането им в електронни устройства.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Chemistry of 2D materials: Intercalation and surface functionalization

The physical properties of 2D materials are extremely sensitive to the number of layers and the interlayer distance, governed by weak van der Waals interactions. Consequently, the fine-tuning of these interactions permit to control the properties of the material. The main goal of this project was to synthesize new 2D materials (based on transition-metal chalcogenides) with tailored transport and optoelectronic properties, by controlling interlayer interactions (via intercalation) and the surfaces of the crystals (via functionalization). Intercalation of guest species, such as alkali metals, act as spacers and can provide a very large doping level by conducting charge carriers into the adjacent conducting layer. Furthermore, the increase in layer separation produces a weaker interaction between layers, resulting in each layer behaving as an almost isolated single layer. By using nanofabrication techniques, synthesized 2D materials can be integrated into electronic devices.

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

Цел на проекта

Two-dimensional (2D) materials consist of successive covalently bonded atomic layers sustained by weak van der Waals forces. The electronic and optoelectronic properties of these materials are extremely sensitive to the number of layers and to the interlayer distance. In the proposed project, we aim to synthesise transition-metal chalcogenide and chromium halide 2D nanomaterials with tailored transport and optoelectronic properties. The control of these properties will be achieved by two main strategies: (1) Tuning interlayer interactions through wet chemical and electrochemical intercalation routes: Guest species intercalated in the van der Waals gaps act as spacers increasing the interlayer distance and doping the material by conducting charge carriers into the adjacent conducting layer, which modify the electronic properties of the materials. Furthermore, this strategy enables the piling up of several layers while keeping their single layer behaviour and, therefore, dramatically enhancing the light absorption, which in turn, improves the optoelectronic properties. (2) The second strategy will consist on the modification of the monolayer crystal surface through functionalization, implementing covalent and physisorption methods. Finally, the new synthesized 2D materials will be integrated in heterostructures and devices (such as photodetectors or solar cells). This will be done by nanofabrication techniques, transferring a flake of the material onto suitable substrates. The electrical and optical properties of the devices will be studied in order to optimize their technological potential. The success of this project will make a substantial contribution to one of the EU main concerns on developing nanotechnologies and advanced materials.

Оригинален текст от CORDIS (на английски).

Участници

AGENCIA ESTATAL CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS · MadridКоординаторИспания