Person:
Correa-Baena, Juan-Pablo

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    Extension of Community: what it means to be sustainable in a digital world
    (Georgia Institute of Technology, 2023-09-28) Graves, Jordan ; Griffin, Adira ; Janicki, Sylvia ; Krieger, Joel ; Landesberg, Amy ; Lewis, Matt ; Longobardi, Pam ; Parvin, Nassim ; Romm, Stuart ; Spence, Hunter ; Talero, Mauricio ; Treu, Hudson ; Correa-Baena, Juan-Pablo ; Bolen, Jeremy
    Extension of Community: what it means to be sustainable in a digital world explores the intersection of science, technology and art, asking questions such as; How have our technological and digital developments helped and harmed us? How can we be more digitally sustainable? And how can technology be harnessed to help heal the planet? All the artists reflect on community and sustainability within their practice and question the impacts of technologies on the environment. This artist talk features work by an array of artists and researchers based here in Atlanta: Jeremy Bolen, Juan-Pablo Correa-Baena, Jordan Graves, Adira Griffin, Inspired Action Design (Collaborators: Joel Krieger, Matt Lewis, Hunter Spence and Mauricio Talero) Sylvia Janicki, Amy Landesberg, Pam Longobardi, Nassim Parvin, Stuart Romm, and Hudson Treu.
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    Understanding and Designing Interfaces and Defects in Perovskite Solar Cells
    (Georgia Institute of Technology, 2020-01-28) Correa-Baena, Juan-Pablo
    Perovskite solar cells promise to yield efficiencies beyond 30% by further improving the quality of the materials and devices. Electronic defect passivation, and suppression of detrimental charge-carrier recombination at the different device interfaces has been used as a strategy to achieve high performance perovskite solar cells. In this presentation, I will discuss the role of electronic defects and how these can be passivated to improve charge-carrier lifetimes and to achieve high open-circuit voltages. I will discuss the characterization of 2D and 3D defects, such as grain boundaries, crystal surface defects, and precipitate formation within the films, by synchrotron-based techniques. The importance of interfaces and their contribution to detrimental recombination will also be discussed. As a result of these contributions to better understanding 2D and 3D defects, the perovskite solar cell field has been able to improve device performance. Albeit the rapid improvements in performance, there is still a need to improve these defects to push these solar cells beyond the current state-of-the-art.