Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Publication date: 21st February 2018
Hybrid organometal halide perovskite solar cells (PSCs) are a potentially low cost and efficient photovoltaic technology, however, the instability of the perovskite represents a major drawback. PSCs emerged from the dye-sensitized solar cell (DSSC) in 2009, but also share several characteristics with organic photovoltaics (OPV). Since then, the efforts of the community to optimize the device configuration gave rise to two different groups of architecture: mesoscopic and planar. Advantages of using either of these architectures is still under debate since both have demonstrated certified efficiencies in excess of 20%. Clearly the mesoporous film is not essential for achieving high efficiency PSCs, however, there is evidence that the presence of a mesoporous electron transport layer (ETL) may improve the lifetime of the cells. This enhanced stability is suggested to be related to the speed of electron extraction from the perovskite layer, thus preventing a light induced degradation mechanism.
In this work, we test the stability of non-encapsulated planar and mesoscopic devices containing TiO2 as ETL in air under conditions of relatively high humidity (60% RH ± 5%). The cells were exposed to the ambient and kept either under illumination or in dark. We found that the lifetime of the mesoscopic devices is higher with a T50 value more than double that found for planar devices. We also present impedance spectroscopy results on both configurations in order to relate the electrical properties with the enhanced stability. These are important findings since it affects not only considerations about the more advantageous solar cell architecture, but also suggests the importance of choosing a proper ETL material and nanostructure.
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.