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PRODID:-//eluceo/ical//2.0/EN
VERSION:2.0
CALSCALE:GREGORIAN
BEGIN:VEVENT
UID:8fc3dbef-ba08-4497-be61-d5b19beeb929
DTSTAMP:20261028T114043Z
SUMMARY:Characterization of Ion Migration in Perovskite Solar Cells
DESCRIPTION:<p><strong>IN-PERSON EVENT - REGISTER <a href="https://forms.of
 fice.com/e/NWUc2s04pe">HERE</a></strong><a href="https://forms.office.com/
 e/NWUc2s04pe"><strong>&nbsp\;</strong></a>to attend</p>\n<p style="text-al
 ign: justify\;">By <strong>Prof. Pilar López-Varo\, </strong>Institut Pho
 tovoltaïque d'Île-de-France (IPVF)</p>\n<p style="text-align: justify\;"
 ><strong>Abstract</strong>:&nbsp\;Ion migration influences the performance
  and stability of perovskite solar cells (PSCs). Different experimental te
 chniques have been used to better understand the puzzling performance of i
 on migration in PSCs. &nbsp\;In this work\, we characterize ion migration 
 using two complementary spectroscopic techniques. Impedance spectroscopy (
 IS) measurements\, supported by drift-diffusion simulations\, are applied 
 to NiOx-based PSCs with different interface passivation treatments[1]. The
  simulations allow the interpretation of experimental IS data under variou
 s illumination intensities and bias-stress tests\, indicating that interfa
 ce modification can reduce electron mobility in NiOx and ion mobility in t
 he perovskite layer. Operando X-ray photoelectron spectroscopy (opXPS) on 
 lateral PSCs is further used to study interfacial electronic changes induc
 ed by ion migration[2-3]. These combined results enhance our understanding
  of ion migration and its impact on PSC performance and operational stabil
 ity.</p>\n<p>[1] O. Almora\, P. López-Varo et al. J. Appl. Phys.&nbsp\;13
 6\, 094502 (2024).</p>\n<p>[2] D. Regaldo et al. Progress in Photovoltaics
 . 30\, 994-1002 (2022).</p>\n<p>[3] P. Lopez-Varo. IEEE 52nd Photovoltaic 
 Specialist Conference (PVSC)\, 1156-1156 (2024).</p>\n<p style="text-align
 : justify\;"><strong>Hosted by CSIC Prof. Mónica Lira Cantu<span class="a
 _GcMg font-feature-liga-off font-feature-clig-off font-feature-calt-off te
 xt-decoration-none text-strikethrough-none">\, <a href="/en/nanostructured
 -materials-for-photovoltaic-energy-group">Nanostructured Materials for Pho
 tovoltaic Energy</a>&nbsp\;</span></strong><span class="a_GcMg font-featur
 e-liga-off font-feature-clig-off font-feature-calt-off text-decoration-non
 e text-strikethrough-none">Group Leader</span></p>
DTSTART:20251028T110000
DTEND:20251028T225959
LOCATION:ICN2 2nd. Floor Meeting Room
CATEGORIES:ICN2 Seminars
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