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Photoluminescence of single semiconductor nanocrystallites by two-photon excitation microscopy

✍ Scribed by Sean A. Blanton; Ahmad Dehestani; Peter C. Lin; Philippe Guyot-Sionnest

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
584 KB
Volume
229
Category
Article
ISSN
0009-2614

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✦ Synopsis

Precise knowledge of the properties of semiconductor nanocrystallites (NCs) may determine their use in future optical devices. However, since synthesis methods are not able to yield perfectly homogeneous NCs. spectral and dynamic responses are usually averaged properties. We examine single NCs using two-photon microscopy and obtain narrow luminescence linewidths (15 meV in 55 .A CdS). This technique should be broadly applicable to single molecule spectroscopy and local probing of buried interfaces, such as quantum wells.

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