Publication date: 28th August 2024
Metal halide perovskites have exhibited great potential in next-generation display applications owing to their high colour purity and high photoluminescence quantum yields. They are known to be highly defect-tolerant compared with conventional semiconductors. However, multiple evidence shows that the effect of defects has significant impacts on the performance of light-emitting diodes. Additionally, we can not ignore the impact of carrier injection on the perovskite light-emitting diode performance. Based on the fundamental principles of perovskite passivation, we introduced multifunctional phosphine-containing molecules, including diphenylphosphinamide and phosphonic acid, as the additive to passivate surface defects, modulate the phase distribution, and smooth the energy transfer of the quasi-2D perovskite, giving rise to higher optoelectronic properties of perovskites and better performance. Meanwhile, we designed the tris(4-trifluoromethylphenyl)phosphine oxide to modulate the energy level and hole mobility of originally commercial poly(9-vinylcarbazole) layer, resulting efficient blue perovskite light-emitting diodes. demonstrate that phosphine-containing molecules not only serve as passivation agents for perovskites but also modify the properties of the charge transport layer. We believe that phosphine-containing molecules hold significant potential for enhancing the performance of perovskite LEDs.
This work was supported by the National Research Foundation of Korea (NRF-2022H1D3A3A01077343, NRF-2022R1A2C4002248, and 2021M3H4A1A02049006). This research was supported by the core research institute (CRI) program, the basic science research program through the national research foundation of Korea (NRF) under program number (2022R1A6A1A03051158). The authors acknowledge the EPSRC (EP/V06164X/1) for funding. This work was supported by the Samsung Research Funding & Incubation Center of Samsung Electronics under Project Number SRFC-TC2103-04. AD would like to express his gratitude to the Penrose scholarship for very generously funding his studentship.
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.