Michael D. McGehee

Aug 6, 2024 | nature.com | Fangyuan Jiang |Yangwei Shi |Tanka R. Rana |Daniel Morales |Isaac E Gould |Joel Smith | +6 more

AbstractAs perovskite photovoltaics stride towards commercialization, reverse bias degradation in shaded cells that must current match illuminated cells is a serious challenge. Previous research has emphasized the role of iodide and silver oxidation, and the role of hole tunnelling from the electron-transport layer into the perovskite to enable the flow of current under reverse bias in causing degradation.

Aug 24, 2023 | cloud-awards.com | Michael D. McGehee

By Michael McGehee, Senior Project Manager, Telos Corporation, shortlisted for the Best SaaS Product for Health & Safety or Risk Management category at The SaaS Awards 2022The cybersecurity threat landscape is more complex and dangerous than ever. Evidenced by countless statistics but perhaps most apparent by the 2022 Verizon DBIR, the report found a 13% rise in ransomware this year — an increase as big as the last five years combined.

Aug 4, 2023 | nature.com | Sam Teale |Michael D. McGehee |Edward H. Sargent

AbstractPerovskite solar cells have demonstrated the efficiencies needed for technoeconomic competitiveness. With respect to the demanding stability requirements of photovoltaics, many techniques have been used to increase the stability of perovskite solar cells, and tremendous improvements have been made over the course of a decade of research. Nevertheless, the still-limited stability of perovskite solar cells remains to be fully understood and addressed.

Mar 1, 2023 | nature.com | Michael D. McGehee

Capping a three-dimensional metal halide perovskite with a layered, two-dimensional perovskite prevents ions from diffusing out of the perovskite keeping out oxygen and water as well as contributing to solar cell stability. New research shows that a thin cross-linked polymer layer can ensure that the boundary between the 3D and 2D materials remains sharp, further improving stability.