SELF-ASSEMBLED MONOLAYERS AS HOLE SELECTIVE CONTACTS FOR PEROVSKITE SOLAR CELLS: EXPERIMENT VERSUS SIMULATIONS

1,2 KUO Meng-Hsueh
Co-authors:
1 JAIN Naini 1,2 NEYKOVA Neda 1 SHARMA Rupendra Kumar 3 VELKOV Zhivko 4 CHANG Chih-Yu 1 HOLOVSKÝ Jakub
Institutions:
1 Centre for Advanced Photovoltaics, CTU in Prague, Faculty of Electrical Engineering, Prague, Czech Republic, EU
2 Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic, EU
3 Centre Faculty of Mathematics and Natural Sciences, South-West University “Neofit Rilski”, Blagoevgrad, Bulgaria, EU
4 Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
Conference:
16th International Conference on Nanomaterials - Research & Application, OREA Congress Hotel Brno, Czech Republic, EU, October 16 - 18, 2024
Proceedings:
Proceedings 16th International Conference on Nanomaterials - Research & Application
Pages:
27-32
ISBN:
978-80-88365-24-2
ISSN:
2694-930X
Published:
28th February 2025
Metrics:
38 views / 18 downloads
Abstract

Recent advances in the performance of perovskite solar cells (PSCs) have been strongly linked to advancements in interfacial engineering and the development of charge-selective contact. Self-assembled monolayers (SAMs) play an important role in inverted PSCs due to their distinctive and versatile ability to manipulate chemical and physical interface properties. Here we compared the dipole moments and energy levels of (2-(9H-carbazol-9-yl)ethyl)phosphonic acid (2PACz), (4-(3,6-Dimethyl-9H-carbazol-9-yl)butyl)phosphonic acid (Me-4PACz), (4-(3,6-Dimethoxy-9H-carbazol-9-yl)butyl)phosphonic acid (MeO-4PACz), and (2-(3,7-Dibromo-10H-phenothiazin-10-yl)ethyl)phosphonic acid (Br-2EPT) molecules and their impact on the energy conversion of PSC devices. Additionally, we simulated the dipole moment and surface charge effect device behavior to support our hypothesis. Finally, we observed that the fill factor behavior in both devices and simulations exhibited a similar trend, which correlated with the dipole moment of SAMs.

Keywords: Self-assembled monolayers, perovskite solar cells, dipole moment, surface charge, simulations

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