Condensed Matter Student Seminar Series

Description

Title: Electric Force Microscopy Insights into the Lead Halide Perovskite Photovoltaic Puzzle

Abstract: In the less than two decades since their discovery, lead halide perovskite (LHP) solar materials have shown tremendous promise and proven to be quite unconventional semiconductors. Unfortunately, LHP solar cells suffer from poor stability, and we lack a complete understanding of LHP charge generation and recombination mechanisms. Electric force microscopy (EFM) has the unique ability to probe the photoconductivity dynamics of these materials in a non-contact manner with nanometer spatial resolution and, now, nanosecond temporal resolution. I will present recent work in the Marohn group on advancing Broadband Local Dielectric Spectroscopy and nanosecond Phase-Kick EFM techniques for the study of LHP photovoltaic films.