Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
Publication date: 30th March 2023
Silicon/perovskite tandem solar cells are a promising direction for increasing the power output of solar cells beyond the Shockley-Queisser limit for single junctions. The ideal bandgap of perovskite on top of silicon is around 1.68-1.70eV, which can be achieved by mixed cation, mixed halide perovskites, such as FA0.75Cs0.25Pb(I0.8Br0.2)3. However, there are still many challenges for wide-bandgap compositions, such as film inhomogeneity and photoinduced halide segregation, which will impact the long-term stability during operation.
We employ benzylamine as a bulk additive to stabilize wide-bandgap mixed halide perovskites. Amines and ammonium halides have long been used to passivate perovskite materials. However, the understanding of how they interact with the perovskite is still limited. In this work, a 1.68eV wide-band gap MA-free perovskite is used as an example to show how benzylamine (BnAm) can affect the composition and phases present in the perovskite. We found that depending on the organic cations in the perovskite, the amine reaction can be quite different. In addition, while BnAm additives cause lower-dimensional phases to form, their corresponding benzyl ammonium halide additives do not. By using BnAm as an additive, the photoluminescence quantum yield (PLQY) and open-circuit voltage (Voc) of the device were improved. Moreover, compared to the pristine perovskite or BnAm surface-treated perovskite devices, BnAm bulk additive devices achieved a remarkable T80 stability of 2,460 hours under constant 65°C, AM1.5 light illumination stress test. BnAm-modified wide-bandgap perovskite has great potential to be integrated into silicon/perovskite tandem solar cells to improve their overall operational lifetime.
The author, Suer Zhou, acknowledges the Rank Prize Funds for their funding.
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.