Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.343
Publication date: 16th December 2024
The solution processed semiconductors known as perovskites, or semiconductor perovskites (SP), has been widely studied as an idoneal platform to implement cost-effective integrated lasers. From this perspective, there is an important concern on developing a SP technology to implement photonic integrated circuits. In this context, we have recently demonstrated that a nickel acetate, Ni(AcO)2, sol-gel is an exceptional and non-expensive matrix for SP nanocrystals. The distinctive advantage of this alternative technology relies on the in-situ crystallization of the perovskite nanocrystals during the spin-coating deposition, resulting on thin films with PL quantum yields exceeding 80 % and outstanding ambient and mechanical stability. This work successfully demonstrates the potential of Ni(AcO)2 containing MAPbBr3 (MA:methylamonium) SPs nanocrystals for active photonics. These nanocomposites are easily spin-coated on a SiO2/Si to conform planar waveguides. Moreover, the concentration of nanocrystal in the matrix allows the tunability of the optical properties, resulting in thin films with a tailor-made refractive index and absorption. Under optimal concentrations, the nanocrystals are homogeneously dispersed in the film and the waveguide efficiently propagates the light with relatively low losses. Here, the excitation beam injected in the structure gives rise to the generation of photoluminescence (PL) of the nanocrystals, and under certain excitation and propagation conditions, the generation of amplified spontaneous emission (ASE) and the formation of narrow random lasing (RL) under relatively small threshold (µJ/cm2). These results mark a significant step towards realizing the potential of perovskite nanocomposites in the field of optical waveguides.
This project received funding through projects no. PID2020-120484RB-I00, PID2019-107314RB-I00 (Stable) and PID2023-151632OB-C21 financed by the Spanish MCIN/AEI. This study also formed part of the Advanced Materials and Quantum Communication programs and was supported by MCIN with funding from European Union Next Generation EU (PRTR-C17.I1) within the project COMCUANTICA/009. SSD and JNG acknowledge their FPU PhD contract with reference FPU22/00277 and FPU19/04544.
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.