Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
Publication date: 30th March 2023
Quasi-2D Ruddlesden-Popper phase perovskite (RPP) materials have attracted research interest as emerging semiconductor materials in the optoelectronic field owing to their unique photophysical properties and superior environmental stability. However, despite considerable research on RPP-based perovskite solar cells (PSCs) using various methods, the photovoltaic performance of RPP-based PSCs is still behind those of their 3D counterparts. This performance gap is mainly caused by photogenerated charge carrier loss in the PSCs. In this work, we successfully demonstrate efficient RPP-based PSCs by employing simple post-treatment of a multifunctional molecule on the top surface of the RPP materials (with an RPP composition of PEA2MA4Pb5I16 <n> = 5) in a planar p-i-n configuration of PSCs. Our new strategy significantly passivated both the surface and deep-level trap sites of the RPP materials by electrostatic interactions and simultaneously induced out-of-plane crystal orientations. Due to this novel surface engineering, the carriers generated from RPP photoactive materials were effectively transported in both the bulk material and at the interfaces in PSCs, leading to minimal carrier loss. As a result, we achieved a high power conversion efficiency (PCE) of 20.05% with negligible hysteresis in the RPP-based PSCs. Furthermore, our optimal devices exhibited excellent operational stability over 1000 hours, maintaining almost 88% of the initial PCE under continuous AM 1.5G 1-sun irradiation and a maximum power point tracking system (without a UV filter and encapsulation).
J.-H. K. thanks the Heeger Center for Advanced Materials (HCAM) at the Gwangju Institute of Science and Technology (GIST) for assistance with device fabrication and analysis. This work was supported by the Technology Development Program to Solve Climate Change of the National Research Foundation (NRF) funded by MSIT (NRF-2020M1A2A2080748); by the NRF funded by MSIT (No. 2020R1A2C3003653)
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.