Assessment of valley coherence in a high-quality monolayer molybdenum diselenide

Yuto Urano; Xue Mengsong; Kenji Watanabe; Takashi Taniguchi; Ryo Kitaura

doi:10.35848/1882-0786/acd985

Paper details

Research paper

Experimental Characterization

Assessment of valley coherence in a high-quality monolayer molybdenum diselenide

Yuto Urano, Xue Mengsong, Kenji Watanabe, Takashi Taniguchi et al.

2023·10.35848/1882-0786/acd985·arXiv:2305.07852

Samples

Each sample groups how it was prepared, characterized, and measured. Click a card to expand.

High-quality region of a monolayer MoSe₂ flake prepared by graphene-capping-assisted nanosqueezing and encapsulated as G/hBN/MoSe₂/hBN/G.

1 preparation3 characterizations6 properties4 figures

ExperimentalMoSe₂Studied MaterialhBNSubstrate / DielectricCCapping Or Contact

Low-quality region of the same monolayer MoSe₂ flake, prepared without squeezing, encapsulated as G/hBN/MoSe₂/hBN/G.

1 preparation3 characterizations5 properties4 figures

ExperimentalMoSe₂Studied MaterialhBNSubstrate / DielectricCCapping Or Contact

Materials

MoSe₂

Studied Material

Also known as

molybdenum diselenide

studied material

hexagonal boron nitride

hBN

Substrate / Dielectric

Also known as

Why these are connected

Related documents with shared materials, methods, properties, or citations.

Assessment of valley coherence in a high-quality monolayer molybdenum diselenide | Matter42 Literature

Properties

Type	Label	Value	Material	Sample	Source
PL Peak	exciton peak	1.65eV	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Pl Peak Fwhm	exciton peak	1.7meV	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Pl Peak Fwhm	exciton peak	6.7meV	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Pl Peak Intensity	relative PL intensity	5dimensionless	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	8.8%	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	11.8%	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Valley Coherence	Pc	9.4%	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	15.8%	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Exciton Lifetime	exciton lifetime	1.8ps	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Exciton Lifetime	exciton lifetime	7.1ps	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—

Properties

Type	Label	Value	Material	Sample	Source
PL Peak	exciton peak	1.65eV	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Pl Peak Fwhm	exciton peak	1.7meV	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Pl Peak Fwhm	exciton peak	6.7meV	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Pl Peak Intensity	relative PL intensity	5dimensionless	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	8.8%	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	11.8%	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Valley Coherence	Pc	9.4%	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	15.8%	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Exciton Lifetime	exciton lifetime	1.8ps	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Exciton Lifetime	exciton lifetime	7.1ps	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—

Properties

Type	Label	Value	Material	Sample	Source
PL Peak	exciton peak	1.65eV	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Pl Peak Fwhm	exciton peak	1.7meV	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Pl Peak Fwhm	exciton peak	6.7meV	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Pl Peak Intensity	relative PL intensity	5dimensionless	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	8.8%	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	11.8%	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Valley Coherence	Pc	9.4%	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	15.8%	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Exciton Lifetime	exciton lifetime	1.8ps	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Exciton Lifetime	exciton lifetime	7.1ps	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—

Properties

Type	Label	Value	Material	Sample	Source
PL Peak	exciton peak	1.65eV	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Pl Peak Fwhm	exciton peak	1.7meV	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Pl Peak Fwhm	exciton peak	6.7meV	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Pl Peak Intensity	relative PL intensity	5dimensionless	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	8.8%	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	11.8%	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Valley Coherence	Pc	9.4%	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—
Valley Coherence	Pc	15.8%	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Exciton Lifetime	exciton lifetime	1.8ps	MoSe₂	Low-quality region of the same monolayer MoSe₂ flake, prepar	—
Exciton Lifetime	exciton lifetime	7.1ps	MoSe₂	High-quality region of a monolayer MoSe₂ flake prepared by g	—

Assessment of valley coherence in a high-quality monolayer molybdenum diselenide

Samples

High-quality region of a monolayer MoSe₂ flake prepared by graphene-capping-assisted nanosqueezing and encapsulated as G/hBN/MoSe₂/hBN/G.

Low-quality region of the same monolayer MoSe₂ flake, prepared without squeezing, encapsulated as G/hBN/MoSe₂/hBN/G.

Materials

Why these are connected

Assessment of valley coherence in a high-quality monolayer molybdenum diselenide

Samples

High-quality region of a monolayer MoSe₂ flake prepared by graphene-capping-assisted nanosqueezing and encapsulated as G/hBN/MoSe₂/hBN/G.

Low-quality region of the same monolayer MoSe₂ flake, prepared without squeezing, encapsulated as G/hBN/MoSe₂/hBN/G.

Materials

Why these are connected

Assessment of valley coherence in a high-quality monolayer molybdenum diselenide

Samples

High-quality region of a monolayer MoSe₂ flake prepared by graphene-capping-assisted nanosqueezing and encapsulated as G/hBN/MoSe₂/hBN/G.

Low-quality region of the same monolayer MoSe₂ flake, prepared without squeezing, encapsulated as G/hBN/MoSe₂/hBN/G.

Materials

Why these are connected

Assessment of valley coherence in a high-quality monolayer molybdenum diselenide

Samples

High-quality region of a monolayer MoSe₂ flake prepared by graphene-capping-assisted nanosqueezing and encapsulated as G/hBN/MoSe₂/hBN/G.

Low-quality region of the same monolayer MoSe₂ flake, prepared without squeezing, encapsulated as G/hBN/MoSe₂/hBN/G.

Materials

Why these are connected

Assessment of valley coherence in a high-quality monolayer molybdenum diselenide

Samples

High-quality region of a monolayer MoSe₂ flake prepared by graphene-capping-assisted nanosqueezing and encapsulated as G/hBN/MoSe₂/hBN/G.

Low-quality region of the same monolayer MoSe₂ flake, prepared without squeezing, encapsulated as G/hBN/MoSe₂/hBN/G.

Materials

Why these are connected

Assessment of valley coherence in a high-quality monolayer molybdenum diselenide

Samples

High-quality region of a monolayer MoSe₂ flake prepared by graphene-capping-assisted nanosqueezing and encapsulated as G/hBN/MoSe₂/hBN/G.

Low-quality region of the same monolayer MoSe₂ flake, prepared without squeezing, encapsulated as G/hBN/MoSe₂/hBN/G.

Materials

Why these are connected

Assessment of valley coherence in a high-quality monolayer molybdenum diselenide

Samples

High-quality region of a monolayer MoSe₂ flake prepared by graphene-capping-assisted nanosqueezing and encapsulated as G/hBN/MoSe₂/hBN/G.

Low-quality region of the same monolayer MoSe₂ flake, prepared without squeezing, encapsulated as G/hBN/MoSe₂/hBN/G.

Materials

Why these are connected

Assessment of valley coherence in a high-quality monolayer molybdenum diselenide

Samples

High-quality region of a monolayer MoSe₂ flake prepared by graphene-capping-assisted nanosqueezing and encapsulated as G/hBN/MoSe₂/hBN/G.

Low-quality region of the same monolayer MoSe₂ flake, prepared without squeezing, encapsulated as G/hBN/MoSe₂/hBN/G.

Materials

Why these are connected

Processing

Characterization

Properties

Processing

Characterization

Properties

Processing

Characterization

Properties

Processing

Characterization

Properties