H2020Индивидуална стипендия2021–2023

iSLIP-NMR · In Situ Light Irradiated Perovskite NMR

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

Период: 2021-04-01 → 2023-03-31
Финансиране от ЕС: 191 149 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Перовскитните слънчеви клетки се анализират чрез ядрено магнитен резонанс, за да се разбере как се разпадат и как добавките влияят на стабилността им. Това помага за намаляване на цената на слънчевата енергия и преминаването към възобновяеми източници.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

In Situ Light Irradiated Perovskite NMR

Generating cheap, renewable energy is one of the greatest challenges currently facing society, to move away from fossil fuels and minimise further climate change. Perovskite solar cells are one of the forerunning future technologies to reduce the cost of solar energy, but they currently suffer from degradation under environmental conditions, preventing commercialisation. This objective of this project was to develop methodology to study hybrid perovskite materials, especially degradation and the mode of operation of different additives and treatments to improve stability. Specifically, the project focussed on nuclear magnetic resonance (NMR) spectroscopy, which yields detailed information about the atomic-scale structure, since it is this atomic-scale structure that determines the stability and performance of perovskite solar cells.

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

Цел на проекта

Widespread adoption of photovoltaics for clean, plentiful and renewable energy requires cheap, efficient and long-lasting solar cells; hybrid perovskite solar cells are promising candidates but suffer from light-induced degradation under operational conditions. Chemical understanding of the photodegradation processes is required to develop stable materials, but is challenging to obtain with existing techniques. Here we propose to study perovskite degradation under in situ light irradiation using high-resolution solid-state NMR. Solid-state NMR is an atomic-scale, element-specific probe of local structure which has recently been shown to provide important information on perovskite systems, however new methodology is required to perform in situ light irradiation. Significantly, many photodefects will be present at low concentrations and/or localised at surfaces; in order to observe these by NMR, in situ light irradiation will be combined with dynamic nuclear polarisation (DNP), whereby the greater polarisation of unpaired electrons boosts the NMR signal. The project is split into three parts: (1) observation of major perovskite photodegradation products under in situ light irradiation that do not require additional sensitivity; (2) adaptation of DNP NMR to perovskites to observe surface passivating species; and (3) combined DNP-enhanced, in situ light-irradiated NMR to observe minor and/or surface photodefects. All three parts represent innovative methodological advances and will provide key chemical information on perovskite structures and degradation processes to guide future development of stable solar cells. The combination of myself and the Emsley lab is ideal to perform this project, through which I will develop the advanced technical and non-technical research skills required for the project to be succesful. The fellowship will expand my international network and result in wide-reaching research output, which will establish me as an independent researcher.

Оригинален текст от CORDIS (на английски).

Участници

ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE · LausanneКоординаторШвейцария