Sub-millielectronvolt Line Widths in Polarized Low-Temperature Photoluminescence of 2D PbS Nanoplatelets

Pengji Li; Leon Biesterfeld; Lars F. Klepzig; Jingzhong Yang; Huu Thoai Ngo; Ahmed Addad; Tom N. Rakow; Ruolin Guan; Eddy P. Rugeramigabo; Ivan Zaluzhnyy; Frank Schreiber; Louis Biadala; Jannika Lauth; Michael Zopf

doi:10.1021/acs.nanolett.4c04402

Sub-millielectronvolt Line Widths in Polarized Low-Temperature Photoluminescence of 2D PbS Nanoplatelets

Pengji Li, Leon Biesterfeld, Lars F. Klepzig, Jingzhong Yang, Huu Thoai Ngo, Ahmed Addad, Tom N. Rakow, Ruolin Guan, Eddy P. Rugeramigabo, Ivan Zaluzhnyy, Frank Schreiber, Louis Biadala^*, Jannika Lauth^*, Michael Zopf^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Research › peer review

Abstract

Colloidal semiconductor nanocrystals are promising materials for classical and quantum light sources due to their efficient photoluminescence (PL) and versatile chemistry. While visible emitters are well-established, excellent (near-infrared) sources are still being pursued. We present the first comprehensive analysis of low-temperature PL from two-dimensional (2D) PbS nanoplatelets (NPLs). Ultrathin 2D PbS NPLs exhibit high crystallinity confirmed by scanning transmission electron microscopy, revealing Moiré patterns in overlapping NPLs. At 4 K, unique PL features are observed in single PbS NPLs, including narrow zero-phonon lines with line widths down to 0.6 meV and a linear degree of polarization up to 90%. Time-resolved measurements identify trions as the dominant emission source with a 2.3 ns decay time. Sub-meV spectral diffusion and no inherent blinking over minutes are observed, as well as discrete spectral jumps without memory effects. These findings advance the understanding and underscore the potential of colloidal PbS NPLs for optical and quantum technologies.

Original language	English
Pages (from-to)	16293-16300
Number of pages	8
Journal	Nano letters
Volume	24
Issue number	51
E-pub ahead of print	22 Nov 2024
DOIs	https://doi.org/10.1021/acs.nanolett.4c04402
Publication status	Published - 25 Dec 2024

Keywords

cryogenic temperatures
PbS nanoplatelets
polarized photoluminescence
sub-meV line widths
trions

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/acs.nanolett.4c04402Licence: CC BY 4.0

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Li, P., Biesterfeld, L., Klepzig, L. F., Yang, J., Ngo, H. T., Addad, A., Rakow, T. N., Guan, R., Rugeramigabo, E. P., Zaluzhnyy, I., Schreiber, F., Biadala, L., Lauth, J., & Zopf, M. (2024). Sub-millielectronvolt Line Widths in Polarized Low-Temperature Photoluminescence of 2D PbS Nanoplatelets. Nano letters, 24(51), 16293-16300. https://doi.org/10.1021/acs.nanolett.4c04402

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title = "Sub-millielectronvolt Line Widths in Polarized Low-Temperature Photoluminescence of 2D PbS Nanoplatelets",

abstract = "Colloidal semiconductor nanocrystals are promising materials for classical and quantum light sources due to their efficient photoluminescence (PL) and versatile chemistry. While visible emitters are well-established, excellent (near-infrared) sources are still being pursued. We present the first comprehensive analysis of low-temperature PL from two-dimensional (2D) PbS nanoplatelets (NPLs). Ultrathin 2D PbS NPLs exhibit high crystallinity confirmed by scanning transmission electron microscopy, revealing Moir{\'e} patterns in overlapping NPLs. At 4 K, unique PL features are observed in single PbS NPLs, including narrow zero-phonon lines with line widths down to 0.6 meV and a linear degree of polarization up to 90%. Time-resolved measurements identify trions as the dominant emission source with a 2.3 ns decay time. Sub-meV spectral diffusion and no inherent blinking over minutes are observed, as well as discrete spectral jumps without memory effects. These findings advance the understanding and underscore the potential of colloidal PbS NPLs for optical and quantum technologies.",

keywords = "cryogenic temperatures, PbS nanoplatelets, polarized photoluminescence, sub-meV line widths, trions",

author = "Pengji Li and Leon Biesterfeld and Klepzig, {Lars F.} and Jingzhong Yang and Ngo, {Huu Thoai} and Ahmed Addad and Rakow, {Tom N.} and Ruolin Guan and Rugeramigabo, {Eddy P.} and Ivan Zaluzhnyy and Frank Schreiber and Louis Biadala and Jannika Lauth and Michael Zopf",

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doi = "10.1021/acs.nanolett.4c04402",

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T1 - Sub-millielectronvolt Line Widths in Polarized Low-Temperature Photoluminescence of 2D PbS Nanoplatelets

AU - Li, Pengji

AU - Biesterfeld, Leon

AU - Klepzig, Lars F.

AU - Yang, Jingzhong

AU - Ngo, Huu Thoai

AU - Addad, Ahmed

AU - Rakow, Tom N.

AU - Guan, Ruolin

AU - Rugeramigabo, Eddy P.

AU - Zaluzhnyy, Ivan

AU - Schreiber, Frank

AU - Biadala, Louis

AU - Lauth, Jannika

AU - Zopf, Michael

PY - 2024/12/25

Y1 - 2024/12/25

N2 - Colloidal semiconductor nanocrystals are promising materials for classical and quantum light sources due to their efficient photoluminescence (PL) and versatile chemistry. While visible emitters are well-established, excellent (near-infrared) sources are still being pursued. We present the first comprehensive analysis of low-temperature PL from two-dimensional (2D) PbS nanoplatelets (NPLs). Ultrathin 2D PbS NPLs exhibit high crystallinity confirmed by scanning transmission electron microscopy, revealing Moiré patterns in overlapping NPLs. At 4 K, unique PL features are observed in single PbS NPLs, including narrow zero-phonon lines with line widths down to 0.6 meV and a linear degree of polarization up to 90%. Time-resolved measurements identify trions as the dominant emission source with a 2.3 ns decay time. Sub-meV spectral diffusion and no inherent blinking over minutes are observed, as well as discrete spectral jumps without memory effects. These findings advance the understanding and underscore the potential of colloidal PbS NPLs for optical and quantum technologies.

AB - Colloidal semiconductor nanocrystals are promising materials for classical and quantum light sources due to their efficient photoluminescence (PL) and versatile chemistry. While visible emitters are well-established, excellent (near-infrared) sources are still being pursued. We present the first comprehensive analysis of low-temperature PL from two-dimensional (2D) PbS nanoplatelets (NPLs). Ultrathin 2D PbS NPLs exhibit high crystallinity confirmed by scanning transmission electron microscopy, revealing Moiré patterns in overlapping NPLs. At 4 K, unique PL features are observed in single PbS NPLs, including narrow zero-phonon lines with line widths down to 0.6 meV and a linear degree of polarization up to 90%. Time-resolved measurements identify trions as the dominant emission source with a 2.3 ns decay time. Sub-meV spectral diffusion and no inherent blinking over minutes are observed, as well as discrete spectral jumps without memory effects. These findings advance the understanding and underscore the potential of colloidal PbS NPLs for optical and quantum technologies.

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Sub-millielectronvolt Line Widths in Polarized Low-Temperature Photoluminescence of 2D PbS Nanoplatelets

Abstract

Keywords

ASJC Scopus subject areas

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QuantumFrontiers: Cluster of Excellence 2123/1: Light and Matter at the Quantum Frontier

PhoenixD: Cluster of Excellence 2122/1: Photonics, Optics, and Engineering – Innovation Across Disciplines

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Sub-millielectronvolt Line Widths in Polarized Low-Temperature Photoluminescence of 2D PbS Nanoplatelets

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Projects

QuantumFrontiers: Cluster of Excellence 2123/1: Light and Matter at the Quantum Frontier

PhoenixD: Cluster of Excellence 2122/1: Photonics, Optics, and Engineering – Innovation Across Disciplines

Cite this