Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV24)
Publication date: 6th February 2024
Presently, the passivation of trap-states at the surfaces and grain boundaries of perovskite absorbers is one of the largest challenges in achieving the stabilization and further commercializing of perovskite solar cells (PSCs) technology. Additionally, it would be advantageous to grow high-quality perovskite films on flexible substrates which would expand their applicability. Herein, a novel multifunctional fluorine-propylamine salt 2,2,3,3,3-pentafluoropropylamine hydrochloride (PFPACl) is dissolved into green antisolvent and in situ introduced onto the surface and surface sublayers of perovskite absorber to improve the performance of flexible PSCs (FPSCs). The multifunctional groups (NH3+, Cl-, and -F) within PFPACl not only passivate the charged defects but also inhibit the defect generation. PFPACl also finely regulated the crystallization of perovskite films and reduced the material’s lattice strain, resulting in lower Young’s modulus and excellent mechanical flexibility. Simultaneously, the valence band of PFPACl-treated perovskite and hole transport layer (HTL) shows better band alignment and improved work function, promoting carrier extraction and transport. We analyze these and many other factors via DFT calculations and find that the model also predicts better charge extraction at the perovskite-HTL interface. Consequently, PFPACl treatment improved the efficiency of the FPSCs to 23.59% with excellent mechanical robustness and operational stability.
This work was financially supported by "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA 21061001). L.G. Gutsev thanks the Louisiana Optical Network Infrastructure (LONI) for the computational infrastructure used to complete this project. L.G. Gutsev acknowledges the Russian Science Foundation Grant No. 21-73-01057 and The Chinese Academy of Sciences PIFI Fellowship for Visiting Scientists (2024VCC0012) for financially supporting the theoretical portion of this work.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.