Journal article
Transient Lattice Response upon Photoexcitation in CuInSe2 Nanocrystals with Organic or Inorganic Surface Passivation
ACS nano, v 14(10), pp 13548-13556
27 Oct 2020
PMID: 32915540
Abstract
CuInSe2 nanocrystals offer promise for optoelectronics including thin-film photovoltaics and printed electronics. Additive manufacturing methods such as photonic curing controllably sinter particles into quasi-continuous films and offer improved device performance. To gain understanding of nanocrystal response under such processing conditions, we investigate impacts of photoexcitation on colloidal nanocrystal lattices via time-resolved X-ray diffraction. We probe three sizes of particles and two capping ligands (oleylamine and inorganic S2-) to evaluate resultant crystal lattice temperature, phase stability, and thermal dissipation. Elevated fluences produce heating and loss of crystallinity, the onset of which exhibits particle size dependence. We find size-dependent recrystallization and cooling lifetimes ranging from 90 to 200 ps with additional slower cooling on the nanosecond time scale. Sulfide-capped nanocrystals show faster recrystallization and cooling compared to oleylamine-capped nanocrystals. Using these lifetimes, we find interfacial thermal conductivities from 3 to 28 MW/(m(2) K), demonstrating that ligand identity strongly influences thermal dissipation.
Metrics
Details
- Title
- Transient Lattice Response upon Photoexcitation in CuInSe2 Nanocrystals with Organic or Inorganic Surface Passivation
- Creators
- Samantha M. Harvey - Northwestern UniversityDaniel W. Houck - The University of Texas at AustinMatthew S. Kirschner - Northwestern UniversityNathan C. Flanders - Northwestern UniversityAlexandra Brumberg - Northwestern UniversityAriel A. Leonard - Northwestern UniversityNicolas E. Watkins - Northwestern UniversityLin X. Chen - Northwestern UniversityWilliam R. Dichtel - Northwestern UniversityXiaoyi Zhang - Argonne National LaboratoryBrian A. Korgel - The University of Texas at AustinMichael R. Wasielewski - Northwestern UniversityRichard D. Schaller - Northwestern UniversityUniv. of Texas, Austin, TX (United States)
- Publication Details
- ACS nano, v 14(10), pp 13548-13556
- Publisher
- Amer Chemical Soc
- Number of pages
- 9
- Grant note
- DE-ACO2-06CH11357 / Ultrafast Initiative of the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, through Argonne National Laboratory; United States Department of Energy (DOE) DE-FG02-99ER14999 / U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE) E.I. DuPont de Nemours Co. W911NF-15-1-0447 / Army Research Office for a Multidisciplinary University Research Initiatives (MURI) award TIP -182206; IIP-1540028 / National Science Foundation; National Science Foundation (NSF) DGE-1842165 / National Science Foundation Graduate Research Fellowship Program; National Science Foundation (NSF) DE-ACO2-06CH11357 / Basic Energy Science, CBG Division, US Department of Energy through Argonne National Laboratory; United States Department of Energy (DOE) DE-AC0206CH11357 / U.S. Department of Energy, Office of Science; United States Department of Energy (DOE) F-1464 / Robert A. Welch Foundation; The Welch Foundation Northwestern University
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:000586793400102
- Scopus ID
- 2-s2.0-85094983674
- Other Identifier
- 991022053868204721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology