Proceedings of nanoGe International Conference on Perovskite Solar Cells, Photonics and Optoelectronics (NIPHO19)
DOI: https://doi.org/10.29363/nanoge.nipho.2019.040
Publication date: 21st November 2018
Halide perovskites have attracted widespread attention for their reported defect tolerance, in stark contrast to traditional semiconductors. In this contribution, I will discuss nanoprobe X-ray microscopy investigations of the relationship between the defects that do appear in thin film hybrid perovskites and optoelectronic performance and stability. In these beam sensitive materials, the weaker X-ray matter interaction relative to E-beam microscopy enables X-ray microscopy to provide a close look at the nanoscale elemental and structural complexities of perovskites. Using a series of model thin film materials, we reveal a wide-ranging heterogeneity in local chemistry and structure and link these nanoscopic variations to impacts on charge collection. We provide direct species-specific evidence of halide migration and its close correlation with photoluminescence and use nano-diffraction to understand the effects of varying crystallinity in perovskite crystals at the nanoscale. Finally, I will share insights from our nanoprobe study of non-stoichiometry and second-phase formation in triple-and quaternary-cation perovskite solar cells to provide feedback for improving performance. By understanding and mitigating defects in the bulk and at interfaces, we aim to systematically accelerate the development of these optoelectronic materials.
The support of the Hellman Foundation and the California Energy Commission (EPC-16-050) are gratefully acknowledged.
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.