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DTSTAMP:20260407T163927Z
UID:5a537ec98f793058183738@ist.ac.at
DTSTART:20180122T120000
DTEND:20180122T130000
DESCRIPTION:Speaker: Michael Saliba\nhosted by Georgios Katsaros\nAbstract:
  Perovskite solar cells (PSCs) have created much excitement in the past ye
 ars and attract spotlight attention from research groups all over the worl
 d with many thousands of publications every year. This talk will provide a
 n overview on the reasons for this unique success story highlighting the h
 istoric development as well as the specific material properties that make 
 perovskites so attractive for the research community.The current challenge
 s are exemplified using a high-performance model systems for PSCs (multica
 tion Rb\, Cs\, methylammonium (MA)\, formamidinium (FA) perovskites).(1\,2
 ) The triple cation (Cs\, MA\, FA) achieves power conversion efficiencies 
 (PCEs) close to 21% due to suppressed phase impurities. This results in mo
 re robust materials enabling breakthrough reproducibility. Through multica
 tion engineering\, the seemingly too small Rb can be integrated (unsuited 
 as a single-cation perovskite).(2) This results in a stabilized efficiency
  of 21.6%with one of the smallest differences between band gap and voltage
  ever measured for any PV material. Polymer-coated cells maintained 95% of
  their initial performance at elevated temperature for 500 hours under wor
 king conditions\, a crucial step towards industrialisation of PSCs.(1) Sal
 iba et al. Cesium-containing triple cation perovskite solar cells: improve
 d stability\, reproducibility and high efficiency. Energy & Environmental 
 Science (2016)(2) Saliba et al. Incorporation of rubidium cations into per
 ovskite solar cells improves photovoltaic performance. Science (2016)
LOCATION:Mondi Seminar Room 2\, Central Building\, ISTA
ORGANIZER:pdelreal@ist.ac.at
SUMMARY:Michael Saliba: Historic overview and design principles for  optoel
 ectronic perovskite semiconductor materials
URL:https://talks-calendar.ista.ac.at/events/1034
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