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UID:DSC-23177
DTSTART;TZID=Europe/Berlin:20270114T130000
SEQUENCE:1790573829
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20270114T140000
URL:https://dresden-science-calendar.org/calendar/en/detail/23177
LOCATION:IFW\, Helmholtzstraße 2001069 Dresden
SUMMARY:Katz: MICROCONCENTRATOR PEROVSKITE SOLAR CELLS FOR SPACE APPLICATIO
 NS
CLASS:PUBLIC
DESCRIPTION:Speaker: Prof. Eugene A. Katz\nInstitute of Speaker: Ben-Gurion
  University of the Negev\nTopics:\n\n Location:\n  Name: IFW (D2E.27\, IFW
  Dresden)\n  Street: Helmholtzstraße 20\n  City: 01069 Dresden\n  Phone: 
 \n  Fax: \nDescription: This study was motivated by our development of per
 ovskite solar cells (PSCs) for space applications\, which are expected to 
 operate effectively under concentrated sunlight. PSCs could offer signific
 ant advantages for space applications\, including resilience to cosmic rad
 iation and the ease of fabricating micro-cells for ultra-compact micro-con
 centrators capable of high specific power. We present experimental results
  on the light-intensity dependence of PSC power conversion efficiency (PCE
 ) over a wide range of solar concentrations. We have concluded that PCE un
 der high light intensity is limited mostly by losses in short-circuit curr
 ent\, ISC\, indicating considerable bimolecular combination in short-circu
 it conditions. By parallel measurement of voltage-dependent photocurrent a
 nd photoluminescence (PL) under both laser and concentrated sunlight illum
 ination\, we have confirmed considerable photoluminescence in short-circui
 ted PSC. Possible mechanisms of the effect and pathways of its suppression
  are discussed. First results on such suppression are presented. In additi
 on to the main part of the talk\, two bonuses will be suggested:(1) observ
 ation of a similar sublinear dependence of ISC on light intensity was obse
 rved in outdoor studies of terrestrial perovskite cells and mini-modules\;
  (2) my historical exploration of the discovery of mineral perovskite in t
 he 19th century and the name we use today.
DTSTAMP:20260928T134631Z
CREATED:20260926T053603Z
LAST-MODIFIED:20260928T053709Z
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