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Swansea Chemistry Seminar Program

4 February 2021 14:00-15:00, Swansea, United Kingdom


Introduction
Our Chemistry seminars are back. Please find the information of our next speaker below:

Speaker: Dr. Miguel Anaya, Cambridge University
Title: Lessons from multimodal microscopy for halide perovskites

Abstract: Halide perovskites perform remarkably in optoelectronic devices. However, their performance is still not properly understood given they exhibit compositional and structural heterogeneity in addition to large concentrations of deep charge carrier traps in well localized spatial clusters. In this talk, we resolve this paradox revealing that compositional disorder of the perovskite can induce carrier funneling away from deep trap states, improving performance. To do this, we use a series of multimodal microscopy techniques based on synchrotron nanoprobe and optical spectroscopic methods, including hyperspectral and transient absorption microscopy, correlated at the nanoscale. Finally, I will show how our quantitative optical microscopy allow us to visualise the degradation paths in perovkite based LEDs and identify routes to mitigate those.

Zoom link:
https://swanseauniversity.zoom.us/j/97039228760?pwd=NTVJTTQrMDFzWSsvODlOOXB0aFdrUT09
Meeting ID: 970 3922 8760
Passcode: seminar
Speakers
Dr Miguel Anaya, Cambridge University, United Kingdom

Miguel Anaya is a Marie Curie Fellow at the StranksLab at the University of Cambridge, and Research Fellow at Darwin College, Cambridge. He graduated from Autonomous University of Madrid in 2012 with a B.S.+M.S. in Physics (First Class), and he obtained a second M.S. in Materials Science in 2013 at the University of Seville (First Class Honours). He started his scientific career in 2010 working at the Multifunctional Optical Materials Group (MOM) led by Prof. Hernán Míguez with a student internship at the Institute of Materials Science of Seville (CSIC-University of Seville). During his Master Thesis at MOM, Miguel became an expert on the synthesis of nanoparticles, preparation of porous one-dimensional photonic crystals and their integration in dye-sensitized solar cells. In September 2013 he got a contract at MOM in order to carry out a scientific project between Abengoa Solar LLC and the Spanish National Research Council, where he acquired proficiency in controlling the porosity of photonic structures. In September 2014, he was awarded by a prestigious La Caixa Fellowship to fund his PhD (only selected proposal in Materials Science) for a project related to optical design of perovskite materials and solar cells and it received the Prize for Best Experimental Thesis of the Spanish Royal Society of Physics. Miguel has been recognized with the SPIE Scholarship and the E-MRS Student Award for his contributions. He has been distinguished as Best Young Investigator 2016 by the City Hall of Seville as well as with the Prize to the Best Article of the University of Seville 2016 and CICCartuja (editions 2015, 2016 and 2017).



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Swansea University

Swansea University, Department of Chemistry, Swansea, SA28PP, United Kingdom

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