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Development principles and production of paired PbS quantum dots

Published online by Cambridge University Press:  06 February 2008

D. Mohanta ,
H. Bora ,
N. Dutta  and
A. Choudhury
D. Mohanta*
Affiliation:
Nanoscience Laboratory, Department of Physics, Tezpur University, P.O. Napaam, Dist. Sonitpur, Assam-784 028, India Laboratory for Molecular Scale Engineering, 1415 Engineering Dr., Department of Electrical and Computer Engineering, University of Wisconsin-Madison, WI 53706, USA
H. Bora
Affiliation:
Nanoscience Laboratory, Department of Physics, Tezpur University, P.O. Napaam, Dist. Sonitpur, Assam-784 028, India
N. Dutta
Affiliation:
Nanoscience Laboratory, Department of Physics, Tezpur University, P.O. Napaam, Dist. Sonitpur, Assam-784 028, India
A. Choudhury
Affiliation:
Nanoscience Laboratory, Department of Physics, Tezpur University, P.O. Napaam, Dist. Sonitpur, Assam-784 028, India Gauhati University, Gopinath Bordoloi Nagar, Guwahati, Assam-781 014, India
*
best@tezu.ernet.in
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Abstract

We report for the first time, to the best of our knowledge, an inexpensive fabrication procedure for obtaining perfectly coupled PbS quantum dots. Evidence of quantum dot pairing (each, 10–12 nm) was confirmed by transmission electron microscopy, and the stability with aging was checked by dark-current measurements. The method of encapsulating PbS quantum dots in a nontoxic cis-trans polymer is simple, convenient and attractive for reproducible reasons. Such coupled quantum dots are promising to act as qubits which are vital in quantum computers and qubit architecture.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 41 , Issue 2 , February 2008 , pp. 129 - 132
Copyright
© EDP Sciences, 2008

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