ChemRxiv
These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
VdB_Perovskite Beam Damage_Main Text.pdf (442.01 kB)
0/0

Mitigating Damage to Hybrid Perovskites Using Pulsed-Beam TEM

preprint
submitted on 04.08.2020 and posted on 05.08.2020 by Elisah VandenBussche, Catherine Clark, Russell Holmes, David Flannigan
Mitigation of electron-beam damage of methylammonium lead iodide (MAPbI3) using a modified laser-driven pulsed-beam TEM is demonstrated. For the same dose rates and total doses, it is shown that using a pulsed electron beam causes less damage to MAPbI3 than a conventional thermionic (random) beam. Varying electron-pulse size (i.e., number of electrons per pulse) and the time between pulses is also studied. It is found that damage increases with increasing pulse size and with decreasing time between pulses. Above a certain pulse size, more damage is caused by the pulsed beam than by conventional approaches.

Funding

Imaging Nanoscale Energy Transport and Conversion with Ultrafast Electron Microscopy

Basic Energy Sciences

Find out more...

NSF DGE-1348264

NSF DMR-2011401

History

Email Address of Submitting Author

flan0076@umn.edu

Institution

University of Minnesota

Country

USA

ORCID For Submitting Author

0000-0002-1829-1868

Declaration of Conflict of Interest

No conflict of interest

Exports