Optical properties of PbSe nanocrystal quantum dots under pressure

Kirill K. Zhuravlev; Jeffrey M. Pietryga; Robert K. Sander; Richard D. Schaller

doi:10.1063/1.2431777

Optical properties of PbSe nanocrystal quantum dots under pressure

Kirill K. Zhuravlev, Jeffrey M. Pietryga, Robert K. Sander, Richard D. Schaller

Northwestern University, Argonne National Laboratory

Research output: Contribution to journal › Article

24 Citations (Scopus)

Abstract

The optical properties of PbSe nanocrystal quantum dots (NQDs) were studied as a function of applied hydrostatic pressure over the range from ambient to 5.4 GPa. PbSe NQDs exhibit an energy gap that is dominated by quantum confinement. Despite such strong confinement, the authors find that the energy gaps of 3, 5, and 7 nm diameter PbSe NQDs change monotonically with pressure with a dependence that is almost entirely determined by the bulk deformation potential. The sizable dependence of the NQD energy gap with pressure invites applications in the areas of high speed pressure sensing and tunable IR lasers.

Original language	English
Article number	043110
Journal	Applied Physics Letters
Volume	90
Issue number	4
DOIs	https://doi.org/10.1063/1.2431777
Publication status	Published - Feb 5 2007

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2431777

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Zhuravlev, K. K., Pietryga, J. M., Sander, R. K., & Schaller, R. D. (2007). Optical properties of PbSe nanocrystal quantum dots under pressure. Applied Physics Letters, 90(4), [043110]. https://doi.org/10.1063/1.2431777

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