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DTSTART:20260325T153000Z
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LOCATION:Seminar Room
SUMMARY:ICFO | DMITRY BARANOV
CLASS:PUBLIC
DESCRIPTION:ABSTRACT:\nThin films of lead halide perovskites find applicati
 ons in photovoltaics\, photodetection\, and other areas of optoelectronics
 . One interesting direction focuses on photoluminescent films that exhibit
  energy transfer and light amplification such as amplified spontaneous emi
 ssion\, lasing\, and superfluorescence. Hybrid lead halide perovskite thin
  films such as methylammonium lead iodide (MAPI) and mixed-dimensionality 
 2D-3D phenethylammonium cesium lead bromide (PEA:Cs)PbBr3 are popular mate
 rials for such studies. Given the dynamic nature of metal halides\, correl
 ating spectroscopic observables with structural changes on comparable time
  scales important for understanding mechanisms of light amplification and 
 for engineer these materials for optimal performance. In this talk\, I wil
 l discuss our efforts to correlate ultrafast transient absorption with tim
 e-resolved diffraction of MAPI and (PEA:Cs)PbBr3 thin films at 77 K and hi
 gh excitation conditions.\nBIO:\nDmitry Baranov is an Assistant Professor 
 at the Department of Chemistry\, Lund University\, Sweden\, where he leads
  the Nanochemistry and Spectroscopy Group. Supported by Horizon Europe and
  Swedish Research Council grants\, his research focuses on the chemical sy
 nthesis\, self-assembly\, and collective properties in nanomaterials. He h
 as authored more than 50 research articles and several reviews\, and serve
 s on the Early Career Board of Nano Letters. Dmitry is a member of the Swe
 dish Chemical Society and the Chemical Society in Lund\, and is active in 
 outreach\, engaging students in nanoscience through lectures and demonstra
 tions.
DTSTAMP:20260405T021701Z
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