April 22 - 26, 2024
Seattle, Washington
May 7 - 9, 2024 (Virtual)

Event Supporters

2024 MRS Spring Meeting
EN10.21.05

In-Situ Spatially-Resolved Analysis of Degradation in Perovskite Solar Cells

When and Where

Apr 26, 2024
4:00pm - 4:15pm
Room 334, Level 3, Summit

Presenter(s)

Co-Author(s)

Dana Kern1,Jack Schall1,Goutam Paul1,Steve Johnston1,Andrew Norman1,Harvey Guthrey1,Nikita Dutta1,Chun-Sheng Jiang1,Andrew Glaws1

National Renewable Energy Laboratory1

Abstract

Dana Kern1,Jack Schall1,Goutam Paul1,Steve Johnston1,Andrew Norman1,Harvey Guthrey1,Nikita Dutta1,Chun-Sheng Jiang1,Andrew Glaws1

National Renewable Energy Laboratory1
Long-term durability of metal halide perovskite solar cells (PSCs) can be impacted by both the intrinsic nature of the as-designed device stack as well as unintentional local nonuniformities. Here, we present methods for spatially-resolved in-situ degradation analysis during perovskite stress testing. We use repeated bias/rest cycles from timescales of minutes up to 100 hours to separately assess metastability in comparison to irreversible degradation. We visualize device evolution in-situ under light or electrical bias, either in surface view using electro-optical imaging or in cross-section using kelvin probe force microscopy. We further demonstrate multi-scale investigation of defects, from rapid electro-optical screening of the full device area down to nanoscale microscopic characterization to reveal the underlying chemical or structural nature of defects. Our results inform methods to screen for defects in PSCs, as well as further development of accelerated stress testing and degradation analysis which will become essential for perovskite devices to improve their durability and enter the commercial market.

Keywords

in situ | spectroscopy

Symposium Organizers

Ivan Mora-Sero, Universitat Jaume I
Michael Saliba, University of Stuttgart
Carolin Sutter-Fella, Lawrence Berkeley National Laboratory
Yuanyuan Zhou, Hong Kong University of Science and Technology

Symposium Support

Silver
Journal of Energy Chemistry

Session Chairs

Sascha Feldmann
Lethy Krishnan Jagadamma

In this Session