Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV24)
Publication date: 6th February 2024
Perovskite solar cells have undergone significant advancements in recent years, with a strong focus on optimizing
perovskite crystallization and surface passivation. One promising avenue for improving the light absorption and
electrical properties of perovskite layers is the incorporation of plasmonic nanoparticles. In this study, we investigate
the effects of TiN nanoparticles on the structural, morphological, electrical, and optical properties of
Cs0.05(FAPbI3)0.83(MAPbBr3)0.12 (referred to as CsFAMA) perovskite.
Prior to conducting experimental measurements, we performed optical finite-difference time-domain (FDTD)
simulations to assess the anticipated impact of embedding TiN nanoparticles into CsFAMA on the optical absorptance
spectra. Our simulations revealed moderate increases in absorptance within the visible range, accompanied by notable
enhancements in the near-infrared region. Subsequent real UV-Vis-NIR measurements closely aligned with the
simulation results, with one exception: the overall reflectance of TiN-containing perovskite films exhibited a decrease.
We attribute this phenomenon to the higher crystallinity and larger size of CsFAMA grains, as confirmed through X-
ray diffraction (XRD) and scanning electron microscopy (SEM), respectively.
To gain further insights into the structural and morphological changes resulting from the presence of TiN nanoparticles,
we conducted an aging study on as-deposited, unannealed CsFAMA films for a duration of 3 hours, followed by XRD
measurements on the aged films. Our observations and XRD results indicate that as the content of TiN nanoparticles
increases, the re-dissolution of CsFAMA becomes more pronounced, suggesting a larger quantity of trapped solvents
within the perovskite film. Consequently, the apparent increase in grain size can be attributed to the ability of TiN
nanoparticles to adsorb trace amounts of dimethyl sulfoxide (DMSO), leading to a less rigid perovskite film that
crystallizes at a slower rate, thus facilitating the growth of larger crystals. These findings are in line with TGA and
DSC measurements results.
X-ray photoelectron spectroscopy (XPS) analysis revealed the absence of TiN on the perovskite surface, indicating
that the TiN nanoparticles are situated either at the TiO2/CsFAMA interface or within the CsFAMA structure. Finally,
we constructed perovskite solar cells incorporating TiN nanoparticles, resulting in increased efficiency related to an
improvement of all electrical properties of solar cell (Jsc, Voc and FF). Our measurements of the incident photon-to-
electron conversion efficiency (IPCE) demonstrated enhanced performance arising from both the larger size of
perovskite grains and electron transfer from plasmonic nanoparticles at resonance wavelengths. Larger size of grains
led to reduction in the recombination, as evident from PL results. As a result, the incorporation of TiN led to an
increase in PCE from 19.0% to 21.4%.
In summary, the presence of TiN nanoparticles significantly influences the structural, morphological, electrical, and
optical properties of CsFAMA perovskite. The incorporation of TiN nanoparticles leads to improved absorptance,
enhanced crystallinity, larger grain sizes, and increased efficiency of perovskite solar cells. These findings contribute
to the ongoing efforts to advance the development of high-performance perovskite-based photovoltaic devices.
Keywords: Plasmonic nanoparticles, TiN for CsFAMA perovskite, refractory metals plasmonic nanoparticles,
controlled CsFAMA crystallization.
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.