Journal
PHYSICAL REVIEW LETTERS
Volume 106, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.037404
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Funding
- KAKENHI [20340075, 22016007, 20104006]
- JSPS [21-1890]
- Grants-in-Aid for Scientific Research [20104006, 22016007, 20340075] Funding Source: KAKEN
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We report the first observation of trions (charged excitons), three-particle bound states consisting of one electron and two holes, in hole-doped carbon nanotubes at room temperature. When p-type dopants are added to carbon nanotube solutions, the photoluminescence and absorption peaks of the trions appear far below the E-11 bright exciton peak, regardless of the dopant species. The unexpectedly large energy separation between the bright excitons and the trions is attributed to the strong electron-hole exchange interaction in carbon nanotubes.
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