Issue 16, 2013
From the journal:

Nanoscale

Thermoelectric performance of PbSe quantum dot films†

Dajiang Yang,‡*a   Chenguang Lu,‡*b   Huiming Yina  and  Irving P. Hermanb  

* Corresponding authors

a Department of Civil Engineering and Engineering Mechanics, Columbia University, New York, NY 10027, USA

b Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027, USA
E-mail: dajiangyang@gmail.com, cl2551@columbia.edu

Abstract

The thermoelectric (TE) performance of films of colloidal lead selenide (PbSe) quantum dots (QDs) with metal-chalcogenide complex ligands is seen to change with QD size and temperature. Films of smaller QDs have higher Seebeck coefficient magnitudes, indicating stronger quantum confinement, and lower electrical and thermal conductivities. The thermoelectric figure of merit ZT is ∼0.5 at room temperature and increases with temperature to 1.0–1.37 at ∼400 K, where it is larger for smaller QD films. This is better than previous results for solution-prepared QD TE materials at these elevated temperatures.

Graphical abstract: Thermoelectric performance of PbSe quantum dot films

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Article information

DOI
https://doi.org/10.1039/C3NR01875J
Article type
Paper
Submitted
15 Apr 2013
Accepted
13 Jun 2013
First published
18 Jun 2013

Nanoscale, 2013,5, 7290-7296

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Thermoelectric performance of PbSe quantum dot films

D. Yang, C. Lu, H. Yin and I. P. Herman, Nanoscale, 2013, 5, 7290 DOI: 10.1039/C3NR01875J

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