HEИндивидуална стипендия2023–2025

OPTOCHARGE · Optical probing of charge traps in organic field-effect transistors

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

Период: 2023-05-01 → 2025-04-30
Финансиране от ЕС: 181 153 €
Участници: 1
Схема: HORIZON-TMA-MSCA-PF-EF

Линиите свързват координатора с партньорите.

Накратко на български

Органичните транзистори се изследват чрез фокусирана светлина, за да се открият дефекти, които задържат електрическите заряди. Това помага за подобряване на надеждността на гъвкавите дисплеи и сензорите за биомедицински приложения.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Optical probing of charge traps in organic field-effect transistors

Organic electronics holds considerable promise for the development of large-area, cost-effective, and energy-efficient devices. The use of solution-based processing techniques, combined with access to a vast library of organic semiconducting materials, allows for precise tailoring of material properties to meet specific application requirements. These methods also minimise material waste and enable low-temperature fabrication, thereby reducing overall energy consumption. While organic electronic technologies have already achieved commercial success—most notably in the form of large-area, flexible displays—their broader potential in emerging fields such as biomedical applications, chemical and biological sensing, and sustainable electronics has yet to be fully realised. A key limitation lies in the performance of fundamental device components, such as organic field-effect transistors (OFETs), which continue to suffer from restricted charge carrier mobility and inconsistent behaviour when novel material formulations are employed. A major impediment to performance enhancement in these devices is the presence of charge traps—localized defects within the organic semiconductor bulk or at interfaces—that capture charge carriers and thereby hinder efficient transport through the device. Controlling these charge traps is essential for improving device reliability and functionality; however, their identification, characterization, and rational engineering remain significant challenges due to their complex and elusive nature. The OPTOCHARGE project introduces a novel optical approach to investigate charge trapping phenomena with high spatial, temporal, and spectral resolution. By selectively stimulating traps using focused light and monitoring the resultant device response, the project seeks to uncover the key parameters that govern charge trapping behavior. A systematic investigation of crystallinity, morphology, polymer blending, dopant incorporation, and electrolyte gating is undertaken to elucidate the origins of trap formation and to develop practical strategies for enhancing the performance of organic electronic devices.

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

Цел на проекта

Organic electronics offers huge potential for fabrication of large-area, low-cost, and efficient devices. Solution processing and availability of a vast library of organic semiconductors enables to exquisitely tailor properties to each application, while minimising waste of materials and maintaining low temperatures during processing thus reducing energy use. Although organic electronic devices have reached the market in large and flexible displays, their real potential in biomedical applications, sensing, and sustainable electronics remains unrealised. Crucial fundamental building blocks, such as organic field-effect transistors, are still hindered by limited charge mobility and unpredictable outcomes with new material recipes. Organic semiconductor performance is significantly reduced by formation of charge traps, which are local defects in the material or interfaces that remove charge carriers from the device conduction channels and obstruct transport. Accurate control of charge traps is critical to boost device performance, but they are notoriously difficult to identify, characterise and rationally engineer. OPTOCHARGE adopts a novel approach to optically stimulate traps with high spatial, temporal, and energy resolution, and reveal the key parameters for charge trap optimisation. The project systematically explores crystallinity, morphology, material blends, dopants and electrolyte gating to dissect the origin of traps and offer effective strategies to boost device performance. The proposal leverages unique interdisciplinary synergies between applicant and host, and provides an outstanding research setting to fulfil the full potential of the applicant and launch his academic career.

Оригинален текст от CORDIS (на английски).

Участници

AGENCIA ESTATAL CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS · MadridКоординаторИспания