Open Access
RSC Advances, volume 9, issue 72, pages 42516-42523
Low-cost uncooled MWIR PbSe quantum dots photodiodes
1
School of Electrical and Computer Engineering, University of Oklahoma, Norman, Oklahoma 73019, USA
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Publication type: Journal Article
Publication date: 2019-12-23
Journal:
RSC Advances
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 3.9
ISSN: 20462069, 20462069
General Chemistry
General Chemical Engineering
Abstract
A mid-wave infrared (MWIR) uncooled PbSe-QDs/CdS p-n heterojunction photodiode has been fabricated using a wet-chemical synthesis route. This offers a low-cost alternative to traditional monocrystalline photodiodes relying on molecular beam epitaxy (MBE) technology. It was demonstrated that the post-annealing is critical to tailor the photoresponse wavelength and to improve the performance of photodiodes. After annealing at 673 K in air for 0.5 h, the ligand-free PbSe-QDs/CdS photodiode exhibits a MWIR spectral photoresponse with a cutoff wavelength of 4.2 μm at room temperature. Under zero-bias photovoltaic mode, the peak responsivity and specific detectivity at room temperature are 0.36 ± 0.04 A W-1 and (8.5 ± 1) ×108 cm Hz1/2 W-1, respectively. Temperature-dependent spectral response shows an abnormal intensity variation at temperatures lower than 200 K. This phenomenon is attributed to the band alignment transition from type II to type I, resulting from the positive temperature coefficient of PbSe. In addition, it was proved that In doped CdSe (CdSe:In) films could be used as a promising new candidate of infrared transparent conductive electrodes, paving the way for monolithic integration of uncooled low-cost MWIR photodiodes on Si readout circuitry.
Top-30
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Citations by publishers
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5 publications, 26.32%
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Springer Nature
3 publications, 15.79%
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IEEE
1 publication, 5.26%
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1 publication, 5.26%
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American Institute of Physics (AIP)
1 publication, 5.26%
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- We do not take into account publications without a DOI.
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- Statistics recalculated weekly.
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Qiu J. et al. Low-cost uncooled MWIR PbSe quantum dots photodiodes // RSC Advances. 2019. Vol. 9. No. 72. pp. 42516-42523.
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Qiu J., Weng B., Mcdowell L. L., Shi Z. Low-cost uncooled MWIR PbSe quantum dots photodiodes // RSC Advances. 2019. Vol. 9. No. 72. pp. 42516-42523.
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TY - JOUR
DO - 10.1039/c9ra07664f
UR - https://doi.org/10.1039/c9ra07664f
TI - Low-cost uncooled MWIR PbSe quantum dots photodiodes
T2 - RSC Advances
AU - Shi, Zhisheng
AU - Qiu, Jijun
AU - Weng, Binbin
AU - Mcdowell, Lance L
PY - 2019
DA - 2019/12/23 00:00:00
PB - Royal Society of Chemistry (RSC)
SP - 42516-42523
IS - 72
VL - 9
SN - 2046-2069
SN - 2046-2069
ER -
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@article{2019_Qiu,
author = {Zhisheng Shi and Jijun Qiu and Binbin Weng and Lance L Mcdowell},
title = {Low-cost uncooled MWIR PbSe quantum dots photodiodes},
journal = {RSC Advances},
year = {2019},
volume = {9},
publisher = {Royal Society of Chemistry (RSC)},
month = {dec},
url = {https://doi.org/10.1039/c9ra07664f},
number = {72},
pages = {42516--42523},
doi = {10.1039/c9ra07664f}
}
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MLA
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Qiu, Jijun, et al. “Low-cost uncooled MWIR PbSe quantum dots photodiodes.” RSC Advances, vol. 9, no. 72, Dec. 2019, pp. 42516-42523. https://doi.org/10.1039/c9ra07664f.