Localized exciton emission from monolayer WS2 nanoribbon at cryogenic temperature
We conducted low-temperature photoluminescence (PL) spectroscopy experiments on individual WS2 and MoSe2 nanoribbons prepared by gold-assisted exfoliation from the slanted surface of bulk crystals with a vicinal and stepwise pattern. The nanoribbons are predominantly monolayer and have widths varyin...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2025-01-01
|
| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2024-0583 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850100474738376704 |
|---|---|
| author | Qiang Gang Saunders Ashley P. Trinh Cong T. Liu Na Jones Andrew C. Liu Fang Htoon Han |
| author_facet | Qiang Gang Saunders Ashley P. Trinh Cong T. Liu Na Jones Andrew C. Liu Fang Htoon Han |
| author_sort | Qiang Gang |
| collection | DOAJ |
| description | We conducted low-temperature photoluminescence (PL) spectroscopy experiments on individual WS2 and MoSe2 nanoribbons prepared by gold-assisted exfoliation from the slanted surface of bulk crystals with a vicinal and stepwise pattern. The nanoribbons are predominantly monolayer and have widths varying from hundreds of nanometers down to tens of nanometers. Most MoSe2 NRs display an emission profile similar to 2D excitons of MoSe2 monolayers. In contrast, WS2 nanoribbons are characterized with sharp emission peaks that can be attributed to the emission from localized excitons or trions. Moreover a broad low energy emission peak can be also observed from some of the WS2 nanoribbons, which originates from bilayer regions. In this manuscript, we analyze spectral diffusion behavior along with pump power and temperature dependence of the localized exciton emission peaks, shedding light on potential of TMDC nanoribbons in sensing and opto-electronic applications. |
| format | Article |
| id | doaj-art-87272bba35c6490e9ca5a9b8e348247b |
| institution | DOAJ |
| issn | 2192-8614 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-87272bba35c6490e9ca5a9b8e348247b2025-08-20T02:40:18ZengDe GruyterNanophotonics2192-86142025-01-0114111721172810.1515/nanoph-2024-0583Localized exciton emission from monolayer WS2 nanoribbon at cryogenic temperatureQiang Gang0Saunders Ashley P.1Trinh Cong T.2Liu Na3Jones Andrew C.4Liu Fang5Htoon Han6Center for Integrated Nanotechnologies, Materials Physics and Applications Division, 5112Los Alamos National Laboratory, Los Alamos, NM87545, USADepartment of Chemistry, Stanford University, Stanford, CA94305, USACenter for Integrated Nanotechnologies, Materials Physics and Applications Division, 5112Los Alamos National Laboratory, Los Alamos, NM87545, USACenter for Integrated Nanotechnologies, Materials Physics and Applications Division, 5112Los Alamos National Laboratory, Los Alamos, NM87545, USACenter for Integrated Nanotechnologies, Materials Physics and Applications Division, 5112Los Alamos National Laboratory, Los Alamos, NM87545, USADepartment of Chemistry, Stanford University, Stanford, CA94305, USACenter for Integrated Nanotechnologies, Materials Physics and Applications Division, 5112Los Alamos National Laboratory, Los Alamos, NM87545, USAWe conducted low-temperature photoluminescence (PL) spectroscopy experiments on individual WS2 and MoSe2 nanoribbons prepared by gold-assisted exfoliation from the slanted surface of bulk crystals with a vicinal and stepwise pattern. The nanoribbons are predominantly monolayer and have widths varying from hundreds of nanometers down to tens of nanometers. Most MoSe2 NRs display an emission profile similar to 2D excitons of MoSe2 monolayers. In contrast, WS2 nanoribbons are characterized with sharp emission peaks that can be attributed to the emission from localized excitons or trions. Moreover a broad low energy emission peak can be also observed from some of the WS2 nanoribbons, which originates from bilayer regions. In this manuscript, we analyze spectral diffusion behavior along with pump power and temperature dependence of the localized exciton emission peaks, shedding light on potential of TMDC nanoribbons in sensing and opto-electronic applications.https://doi.org/10.1515/nanoph-2024-0583ws2 nanoribbonlocalized exciton emissionlow-temperature photoluminescence |
| spellingShingle | Qiang Gang Saunders Ashley P. Trinh Cong T. Liu Na Jones Andrew C. Liu Fang Htoon Han Localized exciton emission from monolayer WS2 nanoribbon at cryogenic temperature Nanophotonics ws2 nanoribbon localized exciton emission low-temperature photoluminescence |
| title | Localized exciton emission from monolayer WS2 nanoribbon at cryogenic temperature |
| title_full | Localized exciton emission from monolayer WS2 nanoribbon at cryogenic temperature |
| title_fullStr | Localized exciton emission from monolayer WS2 nanoribbon at cryogenic temperature |
| title_full_unstemmed | Localized exciton emission from monolayer WS2 nanoribbon at cryogenic temperature |
| title_short | Localized exciton emission from monolayer WS2 nanoribbon at cryogenic temperature |
| title_sort | localized exciton emission from monolayer ws2 nanoribbon at cryogenic temperature |
| topic | ws2 nanoribbon localized exciton emission low-temperature photoluminescence |
| url | https://doi.org/10.1515/nanoph-2024-0583 |
| work_keys_str_mv | AT qianggang localizedexcitonemissionfrommonolayerws2nanoribbonatcryogenictemperature AT saundersashleyp localizedexcitonemissionfrommonolayerws2nanoribbonatcryogenictemperature AT trinhcongt localizedexcitonemissionfrommonolayerws2nanoribbonatcryogenictemperature AT liuna localizedexcitonemissionfrommonolayerws2nanoribbonatcryogenictemperature AT jonesandrewc localizedexcitonemissionfrommonolayerws2nanoribbonatcryogenictemperature AT liufang localizedexcitonemissionfrommonolayerws2nanoribbonatcryogenictemperature AT htoonhan localizedexcitonemissionfrommonolayerws2nanoribbonatcryogenictemperature |