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Juan-Pablo Correa-Baena

@jpcorreabaena.bsky.social

Associate Prof at Georgia Tech. Low-cost semiconductors #solar #optoelectronics. Previously: UConn -> EPFL -> MIT. Opinions my own. He/his

69 Posts765 Follower599 Folgt
Volker Blum@aimsduke.bsky.social · 11mo ago

Need to take note of this #chemsky #compchemsky. For anyone in perovskites this GRC is a legend. (Sadly, for me too so far. Did not manage to go and need to make a better effort this time! Thank you @jpcorreabaena.bsky.social and other organizers!)

Juan-Pablo Correa-Baena@jpcorreabaena.bsky.social · 11mo ago

Check this out and come join us! 👀 The 2026 Gordon Research Conference on Unconventional Semiconductors is accepting applications. Limited to 200 spots, so please apply early! When: July 26-31, 2026. Where: University of Southern Maine.

Aron ⇋ e⁻@aronwalsh.github.io · last yr.

My top 3 new papers in @jacs.acspublications.org: i) Recipe for Flat Bands in Pyrochlore Materials pubs.acs.org/doi/10.1021/... ii) MACE-OFF... MLFF for Organic Molecules pubs.acs.org/doi/10.1021/... iii) Ptychographic Observation of Li... at Sub-Angstrom Resolution pubs.acs.org/doi/10.1021/...

Recipe for Flat Bands in Pyrochlore Materials: A Chemist’s Perspective

Materials in which atoms are arranged in a pyrochlore lattice have found renewed interest, as, at least theoretically, orbitals on that lattice can form flat bands. However, real materials often do not behave according to theoretical models, which is why there has been a dearth of pyrochlore materials exhibiting flat band physics. Here, we examine the conditions under which ideal “pyrochlore bands” can exist in real materials and how to have those close to the Fermi level. We find that the simple model used in the literature does not apply to the bands at the Fermi level in real pyrochlore materials. However, surprisingly, we find that certain oxide compounds that have oxygen orbitals inside the pyrochlore tetrahedra do exhibit near-ideal pyrochlore bands near the Fermi level. We explain this observation by a generalized tight-binding model, including the oxygen orbitals. We further classify all known pyrochlore materials based on their crystal structure, band structure, and chemical characteristics and propose materials to study in future experiments.

pubs.acs.org

Juan-Pablo Correa-Baena@jpcorreabaena.bsky.social · last yr.

🚀 New work out! We show how thermal evaporation enables structural control of quasi-2D perovskites — overcoming disorder from solution processing. Synchrotron X-rays + ultrafast spectroscopy reveal how phosphonic acids tune dimensionality. pubs.acs.org/doi/10.1021/... @gatechengineers.bsky.social

Dimensional Control in Phase-Pure Coevaporated Quasi-2D Ruddlesden–Popper Structures

Fast, uncontrolled crystallization with several competing pathways makes solution-processing of phase-pure quasi-two-dimensional (quasi-2D) metal halide Ruddlesden–Popper thin films challenging. Typic...

pubs.acs.org

IMOD@imod-stc.bsky.social · last yr.

Huge thank you to John Curley from Meta Reality Labs for an illuminating talk at yesterday’s All-Hands Meeting! The IMOD community is inspired by the possibilities for augmented and virtual reality technologies — enabled by innovative research in quantum dots and optoelectronic materials.

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Juan-Pablo Correa-Baena@jpcorreabaena.bsky.social · last yr.

Thanks for the shout out @kamat.bsky.social ! In this perspective, we look into the role of self assembled monolayers on hole extraction for Sn-based perovskite solar cell @gatechengineers.bsky.social

Prashant Kamat@kamat.bsky.social · last yr.

#OA article from @jpcorreabaena.bsky.social and Eric Diau groups Toward Maximizing Hole Selection with Self-Assembled Monolayers in Sn-Based Perovskite Solar Cells | ACS Energy Letters pubs.acs.org/doi/10.1021/...

Juan-Pablo Correa-Baena@jpcorreabaena.bsky.social · 2y ago

🎊 A great honor to receive this award, which I couldn't have achieved without my mentors, colleagues, and students at GT and beyond. Thank you 😊

Georgia Tech College of Engineering@gatechengineers.bsky.social · 2y ago

The White House has tapped Georgia Tech materials scientist @jpcorreabaena.bsky.social for a Presidential Early Career Award. It’s the highest US honor for engineers and scientists early in their research careers: b.gatech.edu/42cBqmn

Juan-Pablo Correa-Baena