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Crystal Phase Quantum Dots
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DOI：10.1021/nl903534n.png)
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In semiconducting nanowires, both zinc blende and wurtzite(1) crystal structures can coexist.(2-4) The band structure difference between the two structures can lead to charge confinement.(5) Here we fabricate and study single quantum dot devices(6) defined solely by crystal phase in a chemically homogeneous nanowire and observe single photon generation. More generally, our results show that this type of carrier confinement represents a novel degree of freedom in device design at the nanoscale.
Keyword:
Nanowires
quantum dots
crystal phase
single photons
crystal structure
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期刊
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9.1
论文数:
2.7W
被引数:
16.5W
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