Mitigating Damage to Hybrid Perovskites Using Pulsed-Beam TEM [post]

Elisah VandenBussche, Catherine Clark, Russell Holmes, David Flannigan
2020 unpublished
Mitigation of electron-beam damage of methylammonium lead iodide (MAPbI<sub>3</sub>) 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 MAPbI<sub>3</sub> than a conventional thermionic (random) beam. Varying electron-pulse size (<i>i.e.</i>, number of electrons per pulse) and the time between pulses is also studied. It is found that damage increases with increasing pulse size
more » ... creasing 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.<br>
doi:10.26434/chemrxiv.12756461.v1 fatcat:smpohcdhzndzhaxd63otikbsv4