Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
DOI: https://doi.org/10.29363/nanoge.hopv.2023.162
Publication date: 30th March 2023
Photovoltage losses in perovskite solar cells are associated with an insufficient understanding of interfacial recombination dynamics. For wide band-gap (2.3 eV) materials, these loses still represent around 0.4 eV with respect to the theoretical voltage at the radiative limit1 which makes them excellent candidates to study these processes in depth. On the other hand, the interest in improving the performance of these materials has grown enormously, due to their potential applications in tandem cells, LEDs technologies and even in electrochemical reactions.2 In this work is presented the role of cationic additives in both electronic and ionic charges distribution and how they can modulate them to reach high photovoltages.3 Using them as sentinels, we find the common origin of two features corresponding to unwanted recombination processes: (i) inverted hysteresis during current-voltage measurements and (ii) inductive processes detectable through impedance spectroscopy, (i.e; negative capacitance).4 The cationic additives can reduce these processes leading to an outstanding record value of 1.65 V for a methylammonium lead bromide perovskite solar cell. Through time-of-flight secondary ion mass spectrometry, X-ray photoelectron spectroscopy and impedance spectroscopy, we have revealed the interaction behind this reduction, unveiling an ionic modulation effect as responsible for this achievement.
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.