File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Highly anisotropic and robust excitons in monolayer black phosphorus

TitleHighly anisotropic and robust excitons in monolayer black phosphorus
Authors
Issue Date2015
Citation
Nature Nanotechnology, 2015, v. 10, n. 6, p. 517-521 How to Cite?
AbstractSemi-metallic graphene and semiconducting monolayer transition-metal dichalcogenides are the most intensively studied two-dimensional materials of recent years. Lately, black phosphorus has emerged as a promising new two-dimensional material due to its widely tunable and direct bandgap, high carrier mobility and remarkable in-plane anisotropic electrical, optical and phonon properties. However, current progress is primarily limited to its thin-film form. Here, we reveal highly anisotropic and strongly bound excitons in monolayer black phosphorus using polarization-resolved photoluminescence measurements at room temperature. We show that, regardless of the excitation laser polarization, the emitted light from the monolayer is linearly polarized along the light effective mass direction and centres around 1.3 eV, a clear signature of emission from highly anisotropic bright excitons. Moreover, photoluminescence excitation spectroscopy suggests a quasiparticle bandgap of 2.2eV, from which we estimate an exciton binding energy of ∼ 0.9eV, consistent with theoretical results based on first principles. The experimental observation of highly anisotropic, bright excitons with large binding energy not only opens avenues for the future explorations of many-electron physics in this unusual two-dimensional material, but also suggests its promising future in optoelectronic devices.
Persistent Identifierhttp://hdl.handle.net/10722/335409
ISSN
2023 Impact Factor: 38.1
2023 SCImago Journal Rankings: 14.577
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, Xiaomu-
dc.contributor.authorJones, Aaron M.-
dc.contributor.authorSeyler, Kyle L.-
dc.contributor.authorTran, Vy-
dc.contributor.authorJia, Yichen-
dc.contributor.authorZhao, Huan-
dc.contributor.authorWang, Han-
dc.contributor.authorYang, Li-
dc.contributor.authorXu, Xiaodong-
dc.contributor.authorXia, Fengnian-
dc.date.accessioned2023-11-17T08:25:40Z-
dc.date.available2023-11-17T08:25:40Z-
dc.date.issued2015-
dc.identifier.citationNature Nanotechnology, 2015, v. 10, n. 6, p. 517-521-
dc.identifier.issn1748-3387-
dc.identifier.urihttp://hdl.handle.net/10722/335409-
dc.description.abstractSemi-metallic graphene and semiconducting monolayer transition-metal dichalcogenides are the most intensively studied two-dimensional materials of recent years. Lately, black phosphorus has emerged as a promising new two-dimensional material due to its widely tunable and direct bandgap, high carrier mobility and remarkable in-plane anisotropic electrical, optical and phonon properties. However, current progress is primarily limited to its thin-film form. Here, we reveal highly anisotropic and strongly bound excitons in monolayer black phosphorus using polarization-resolved photoluminescence measurements at room temperature. We show that, regardless of the excitation laser polarization, the emitted light from the monolayer is linearly polarized along the light effective mass direction and centres around 1.3 eV, a clear signature of emission from highly anisotropic bright excitons. Moreover, photoluminescence excitation spectroscopy suggests a quasiparticle bandgap of 2.2eV, from which we estimate an exciton binding energy of ∼ 0.9eV, consistent with theoretical results based on first principles. The experimental observation of highly anisotropic, bright excitons with large binding energy not only opens avenues for the future explorations of many-electron physics in this unusual two-dimensional material, but also suggests its promising future in optoelectronic devices.-
dc.languageeng-
dc.relation.ispartofNature Nanotechnology-
dc.titleHighly anisotropic and robust excitons in monolayer black phosphorus-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1038/nnano.2015.71-
dc.identifier.scopuseid_2-s2.0-84930482259-
dc.identifier.volume10-
dc.identifier.issue6-
dc.identifier.spage517-
dc.identifier.epage521-
dc.identifier.eissn1748-3395-
dc.identifier.isiWOS:000355620000013-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats