BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//UCLA - ECPv5.14.1//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:UCLA
X-ORIGINAL-URL:https://www.chemistry.ucla.edu
X-WR-CALDESC:Events for UCLA
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Los_Angeles
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20240310T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20241103T090000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20240212T160000
DTEND;TZID=America/Los_Angeles:20240212T170000
DTSTAMP:20260614T195214
CREATED:20231219T221605Z
LAST-MODIFIED:20231220T005932Z
UID:31873-1707753600-1707757200@www.chemistry.ucla.edu
SUMMARY:Physical Chemistry Seminar 228: David Limmer
DESCRIPTION:Prof. David Limmer Flyer \nTalk Title: Exciton polarons in lead halide perovskites \nAbstract: In this talk\, I will review some of our recent work concerning the photophysics of the lead halide perovskites. In particular\, I will discuss how their soft\, polar lattices endow quasiparticle excitations like\, polarons and excitons\, with a number of anomalous properties. The electron-phonon coupling in this class of materials results in electrons and holes being repelled from each other in bulk materials at elevated temperatures\, and generates a strongly size dependent dynamic Stokes shift in nanoparticles. In 2d materials\, lattice effects renormalize exciton binding energies\, bringing theoretical predictions that neglect them into better agreement with experimental measurements. The results presented are derived from simple Gaussian field theories and validated with quasiparticle path integral molecular dynamics simulations.
URL:https://www.chemistry.ucla.edu/events/physical-chemistry-seminar-228-david-limmer/
LOCATION:Collaboratory Yoo Seminar & Conference Hall YH4222 
CATEGORIES:Physical,Physical Chemistry Seminar
END:VEVENT
END:VCALENDAR