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Title: Synthesis of Type I PbSe/CdSe Dot-on-Plate Heterostructures with Near-Infrared Emission

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.8b13794· OSTI ID:1510305

Zero-dimensional PbSe quantum dots are heterogeneously nucleated and grown onto two-dimensional zincblende CdSe nanoplatelets. Electron microscopy shows ad-grown dots predominantly decorate edges and corners of the nanoplatelets. Spectroscopic characterizations relate type I electronic alignment as demonstrated via photoluminescence excitation spectroscopy enhancement of near-infrared emission. Transient photoluminescence and absorption convey ultrafast transfer of excitons to the lower energy semiconductor dots. Furthermore these structures combine benefits of large absorption cross sections of nanoplatelets and efficient near-infrared emission of PbSe with quantum confinement tuning of energy gap.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1510305
Journal Information:
Journal of the American Chemical Society, Vol. 141, Issue 13; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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Cited By (2)

Polarized near-infrared intersubband absorptions in CdSe colloidal quantum wells journal October 2019
2D GeSe/SnS 2 (SnSe 2 ) broken-gap heterostructures for tunnel field-effect transistors applications journal August 2019

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