Chen, Y;
Ma, Z;
Du, Z;
You, W;
Yang, J;
Yang, Q;
Zhang, Q;
... Abdi-Jalebi, M; + view all
(2025)
2D/3D heterojunction carrier dynamics and interface evolution for efficient inverted perovskite solar cells.
Journal of Energy Chemistry
, 102
pp. 808-819.
10.1016/j.jechem.2024.11.038.
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Abstract
The 2D/3D heterojunction perovskites have garnered increasing attention due to their exceptional moisture and thermal stability. However, few works have paid attention to the influence of the subsequent change process of 2D/3D heterojunction PSC on the stability of PSCs. Moreover, the evolution of the interface and carrier dynamic behavior of the 2D/3D perovskite films with long-term operation has not been systematically developed before. In this work, the effects of 2D/3D heterojunction evolution on the interface of perovskite films and different carrier dynamics during 2D/3D evolution are systematically analyzed for the first time. The decomposition of 2D/3D heterojunction in the perovskite film will have a certain impact on the surface and carrier dynamics behavior of perovskite. During the evolution of 2D/3D heterojunction, PbI2 crystals will appear, which will improve the interfacial energy level matching between the electron transport layer and perovskite film. With a long evolution time, some holes will appear on the surface of perovskite film. The open circuit voltage (VOC) of PSCs increased from 1.14 to 1.18 V and the PCE increased to 23.21% after 300 h storage in the nitrogen atmosphere, and maintained 89% initial performance for with 3000 h stability test in N2 box. This discovery has a significant role in promoting the development of inverted heterojunction PSCs and constructing the revolution mechanism of charge carrier dynamic.
| Type: | Article |
|---|---|
| Title: | 2D/3D heterojunction carrier dynamics and interface evolution for efficient inverted perovskite solar cells |
| DOI: | 10.1016/j.jechem.2024.11.038 |
| Publisher version: | https://doi.org/10.1016/j.jechem.2024.11.038 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Technology, Chemistry, Applied, Chemistry, Physical, Energy & Fuels, Engineering, Chemical, Chemistry, Engineering, 2D/3D heterojunction, Interface, Carrier dynamics, Evolution, Inverted PSCs, PERFORMANCE, FILMS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office > Institute for Materials Discovery |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10205697 |
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