Nature Materials, volume 4, issue 2, pages 138-142

Solution-processed PbS quantum dot infrared photodetectors and photovoltaics

Steven A Mcdonald 1
Gerasimos Konstantatos 1
Shiguo Zhang 1
Paul W. Cyr 1, 2
Ethan J. D. Klem 1
Larissa Levina 1
Edward H Sargent 1
1
 
Department of Electrical and Computer Engineering, University of Toronto, Toronto, Canada
2
 
Department of Chemistry, University of Toronto, Toronto, Canada
Publication typeJournal Article
Publication date2005-01-09
Journal: Nature Materials
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor41.2
ISSN14761122, 14764660
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Mechanics of Materials
Abstract
In contrast to traditional semiconductors, conjugated polymers provide ease of processing, low cost, physical flexibility and large area coverage1. These active optoelectronic materials produce and harvest light efficiently in the visible spectrum. The same functions are required in the infrared for telecommunications (1,300–1,600 nm), thermal imaging (1,500 nm and beyond), biological imaging (transparent tissue windows at 800 nm and 1,100 nm), thermal photovoltaics (>1,900 nm), and solar cells (800–2,000 nm). Photoconductive polymer devices have yet to demonstrate sensitivity beyond ∼800 nm (refs 2,3). Sensitizing conjugated polymers with infrared-active nanocrystal quantum dots provides a spectrally tunable means of accessing the infrared while maintaining the advantageous properties of polymers. Here we use such a nanocomposite approach in which PbS nanocrystals tuned by the quantum size effect sensitize the conjugated polymer poly[2-methoxy-5-(2′-ethylhexyloxy-p-phenylenevinylene)] (MEH-PPV) into the infrared. We achieve, in a solution-processed device and with sensitivity far beyond 800 nm, harvesting of infrared-photogenerated carriers and the demonstration of an infrared photovoltaic effect. We also make use of the wavelength tunability afforded by the nanocrystals to show photocurrent spectra tailored to three different regions of the infrared spectrum.

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GOST Copy
Mcdonald S. A. et al. Solution-processed PbS quantum dot infrared photodetectors and photovoltaics // Nature Materials. 2005. Vol. 4. No. 2. pp. 138-142.
GOST all authors (up to 50) Copy
Mcdonald S. A., Konstantatos G., Zhang S., Cyr P. W., Klem E. J. D., Levina L., Sargent E. H. Solution-processed PbS quantum dot infrared photodetectors and photovoltaics // Nature Materials. 2005. Vol. 4. No. 2. pp. 138-142.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1038/nmat1299
UR - https://doi.org/10.1038/nmat1299
TI - Solution-processed PbS quantum dot infrared photodetectors and photovoltaics
T2 - Nature Materials
AU - Mcdonald, Steven A
AU - Konstantatos, Gerasimos
AU - Zhang, Shiguo
AU - Cyr, Paul W.
AU - Klem, Ethan J. D.
AU - Levina, Larissa
AU - Sargent, Edward H
PY - 2005
DA - 2005/01/09 00:00:00
PB - Springer Nature
SP - 138-142
IS - 2
VL - 4
SN - 1476-1122
SN - 1476-4660
ER -
BibTex |
Cite this
BibTex Copy
@article{2005_Mcdonald,
author = {Steven A Mcdonald and Gerasimos Konstantatos and Shiguo Zhang and Paul W. Cyr and Ethan J. D. Klem and Larissa Levina and Edward H Sargent},
title = {Solution-processed PbS quantum dot infrared photodetectors and photovoltaics},
journal = {Nature Materials},
year = {2005},
volume = {4},
publisher = {Springer Nature},
month = {jan},
url = {https://doi.org/10.1038/nmat1299},
number = {2},
pages = {138--142},
doi = {10.1038/nmat1299}
}
MLA
Cite this
MLA Copy
Mcdonald, Steven A., et al. “Solution-processed PbS quantum dot infrared photodetectors and photovoltaics.” Nature Materials, vol. 4, no. 2, Jan. 2005, pp. 138-142. https://doi.org/10.1038/nmat1299.
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