Spray-deposited PbS colloidal quantum dot solid for near-infrared photodetectors

Wei Chen; Haodong Tang; Yulong Chen; Julian E. Heger; Nian Li; Lucas P. Kreuzer; Yue Xie; Depeng Li; Carl Anthony; Zoe Pikramenou; Kar Wei Ng; Xiao Wei Sun; Kai Wang; Peter Müller-Buschbaum

doi:10.1016/j.nanoen.2020.105254

Spray-deposited PbS colloidal quantum dot solid for near-infrared photodetectors

Wei Chen, Haodong Tang, Yulong Chen, Julian E. Heger, Nian Li, Lucas P. Kreuzer, Yue Xie, Depeng Li, Carl Anthony, Zoe Pikramenou, Kar Wei Ng, Xiao Wei Sun, Kai Wang, Peter Müller-Buschbaum^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Colloidal PbS quantum dots (QDs) are promising candidates for various optoelectronic applications based on solution-processed thin-film techniques. In this work, a versatile layer-by-layer (LBL) spray deposition of the QDs is introduced aiming for a future large-scale fabrication process of optoelectronic devices. As compared to spin-coated QD solids, a smaller inter-dot distance and a better-ordered superlattice stacking behavior of the QDs are found in the spray-deposited QD solids as confirmed by grazing-incidence small-angle X-ray scattering (GISAXS). The spectral mapping combined time-resolved photoluminescence analysis indicates a longer charge carrier lifetime and better order of the energy state distribution of the spray-deposited QD solid comparing with the spin-coated one. Thus, photodetectors based on spray deposition of QD solids demonstrate an excellent device performance, with the responsivity achieving 365.1 A/W and the detectivity reaching up to 1.4 × 10¹² Jones under an illumination power of 63.5 μW/cm² at a wavelength of 1250 nm. The spray-deposited device performances indicate a great potential of spray deposition of large sized QDs in large-scale fabrications for optoelectronics using longer wavelengths.

Original language	English
Article number	105254
Journal	Nano Energy
Volume	78
DOIs	https://doi.org/10.1016/j.nanoen.2020.105254
Publication status	Published - Dec 2020

Bibliographical note

Funding Information:
This work was supported by funding from the Deutsche Forschungsgemeinschaft, Germany (DFG, German Research Foundation) under Germany's Excellence Strategy ? EXC 2089/1?390776260 (e-conversion), TUM.solar in the context of the Bavarian Collaborative Research Project Solar Technologies Go Hybrid (SolTech), the Center for NanoScience (CeNS) and the International Research Training Group 2022 Alberta/Technical University of Munich International Graduate School for Environmentally Responsible Functional Hybrid Materials (ATUMS). K.W. acknowledges funding supports from the National Natural Science Foundation of China, China (No.61875082, No. 61674074), National Natural Science Foundation of China (No.2017YFE0120400), and Natural Science Foundation of Guangdong, China (No.2017B030306010). W.C. and N.L. are grateful to the support from the China Scholarship Council (CSC), China and L.P.K. from the BMBF project ?Flexiprobe? (grant number 05K16WOA). The authors thank Prof. Alexander Holleitner and Peter Weiser for providing access to the SEM.

Funding Information:
This work was supported by funding from the Deutsche Forschungsgemeinschaft, Germany (DFG, German Research Foundation) under Germany's Excellence Strategy – EXC 2089/1–390776260 (e-conversion), TUM.solar in the context of the Bavarian Collaborative Research Project Solar Technologies Go Hybrid (SolTech), the Center for NanoScience (CeNS) and the International Research Training Group 2022 Alberta/Technical University of Munich International Graduate School for Environmentally Responsible Functional Hybrid Materials (ATUMS). K.W. acknowledges funding supports from the National Natural Science Foundation of China, China (No. 61875082 , No. 61674074 ), National Natural Science Foundation of China (No. 2017YFE0120400 ), and Natural Science Foundation of Guangdong, China (No. 2017B030306010 ). W.C. and N.L. are grateful to the support from the China Scholarship Council (CSC), China and L.P.K. from the BMBF project “Flexiprobe” (grant number 05K16WOA ). The authors thank Prof. Alexander Holleitner and Peter Weiser for providing access to the SEM.

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

GISAXS
Near-infrared photodetector
PbS quantum Dots
Spray deposition

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.nanoen.2020.105254

Cite this

@article{c86a81040b9f434980a6fc26bdfded35,

title = "Spray-deposited PbS colloidal quantum dot solid for near-infrared photodetectors",

abstract = "Colloidal PbS quantum dots (QDs) are promising candidates for various optoelectronic applications based on solution-processed thin-film techniques. In this work, a versatile layer-by-layer (LBL) spray deposition of the QDs is introduced aiming for a future large-scale fabrication process of optoelectronic devices. As compared to spin-coated QD solids, a smaller inter-dot distance and a better-ordered superlattice stacking behavior of the QDs are found in the spray-deposited QD solids as confirmed by grazing-incidence small-angle X-ray scattering (GISAXS). The spectral mapping combined time-resolved photoluminescence analysis indicates a longer charge carrier lifetime and better order of the energy state distribution of the spray-deposited QD solid comparing with the spin-coated one. Thus, photodetectors based on spray deposition of QD solids demonstrate an excellent device performance, with the responsivity achieving 365.1 A/W and the detectivity reaching up to 1.4 × 1012 Jones under an illumination power of 63.5 μW/cm2 at a wavelength of 1250 nm. The spray-deposited device performances indicate a great potential of spray deposition of large sized QDs in large-scale fabrications for optoelectronics using longer wavelengths.",

keywords = "GISAXS, Near-infrared photodetector, PbS quantum Dots, Spray deposition",

author = "Wei Chen and Haodong Tang and Yulong Chen and Heger, {Julian E.} and Nian Li and Kreuzer, {Lucas P.} and Yue Xie and Depeng Li and Carl Anthony and Zoe Pikramenou and Ng, {Kar Wei} and Sun, {Xiao Wei} and Kai Wang and Peter M{\"u}ller-Buschbaum",

note = "Funding Information: This work was supported by funding from the Deutsche Forschungsgemeinschaft, Germany (DFG, German Research Foundation) under Germany's Excellence Strategy ? EXC 2089/1?390776260 (e-conversion), TUM.solar in the context of the Bavarian Collaborative Research Project Solar Technologies Go Hybrid (SolTech), the Center for NanoScience (CeNS) and the International Research Training Group 2022 Alberta/Technical University of Munich International Graduate School for Environmentally Responsible Functional Hybrid Materials (ATUMS). K.W. acknowledges funding supports from the National Natural Science Foundation of China, China (No.61875082, No. 61674074), National Natural Science Foundation of China (No.2017YFE0120400), and Natural Science Foundation of Guangdong, China (No.2017B030306010). W.C. and N.L. are grateful to the support from the China Scholarship Council (CSC), China and L.P.K. from the BMBF project ?Flexiprobe? (grant number 05K16WOA). The authors thank Prof. Alexander Holleitner and Peter Weiser for providing access to the SEM. Funding Information: This work was supported by funding from the Deutsche Forschungsgemeinschaft, Germany (DFG, German Research Foundation) under Germany's Excellence Strategy – EXC 2089/1–390776260 (e-conversion), TUM.solar in the context of the Bavarian Collaborative Research Project Solar Technologies Go Hybrid (SolTech), the Center for NanoScience (CeNS) and the International Research Training Group 2022 Alberta/Technical University of Munich International Graduate School for Environmentally Responsible Functional Hybrid Materials (ATUMS). K.W. acknowledges funding supports from the National Natural Science Foundation of China, China (No. 61875082 , No. 61674074 ), National Natural Science Foundation of China (No. 2017YFE0120400 ), and Natural Science Foundation of Guangdong, China (No. 2017B030306010 ). W.C. and N.L. are grateful to the support from the China Scholarship Council (CSC), China and L.P.K. from the BMBF project “Flexiprobe” (grant number 05K16WOA ). The authors thank Prof. Alexander Holleitner and Peter Weiser for providing access to the SEM. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

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doi = "10.1016/j.nanoen.2020.105254",

language = "English",

volume = "78",

journal = "Nano Energy",

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AU - Chen, Wei

AU - Tang, Haodong

AU - Chen, Yulong

AU - Heger, Julian E.

AU - Li, Nian

AU - Kreuzer, Lucas P.

AU - Xie, Yue

AU - Li, Depeng

AU - Anthony, Carl

AU - Pikramenou, Zoe

AU - Ng, Kar Wei

AU - Sun, Xiao Wei

AU - Wang, Kai

AU - Müller-Buschbaum, Peter

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PY - 2020/12

Y1 - 2020/12

N2 - Colloidal PbS quantum dots (QDs) are promising candidates for various optoelectronic applications based on solution-processed thin-film techniques. In this work, a versatile layer-by-layer (LBL) spray deposition of the QDs is introduced aiming for a future large-scale fabrication process of optoelectronic devices. As compared to spin-coated QD solids, a smaller inter-dot distance and a better-ordered superlattice stacking behavior of the QDs are found in the spray-deposited QD solids as confirmed by grazing-incidence small-angle X-ray scattering (GISAXS). The spectral mapping combined time-resolved photoluminescence analysis indicates a longer charge carrier lifetime and better order of the energy state distribution of the spray-deposited QD solid comparing with the spin-coated one. Thus, photodetectors based on spray deposition of QD solids demonstrate an excellent device performance, with the responsivity achieving 365.1 A/W and the detectivity reaching up to 1.4 × 1012 Jones under an illumination power of 63.5 μW/cm2 at a wavelength of 1250 nm. The spray-deposited device performances indicate a great potential of spray deposition of large sized QDs in large-scale fabrications for optoelectronics using longer wavelengths.

AB - Colloidal PbS quantum dots (QDs) are promising candidates for various optoelectronic applications based on solution-processed thin-film techniques. In this work, a versatile layer-by-layer (LBL) spray deposition of the QDs is introduced aiming for a future large-scale fabrication process of optoelectronic devices. As compared to spin-coated QD solids, a smaller inter-dot distance and a better-ordered superlattice stacking behavior of the QDs are found in the spray-deposited QD solids as confirmed by grazing-incidence small-angle X-ray scattering (GISAXS). The spectral mapping combined time-resolved photoluminescence analysis indicates a longer charge carrier lifetime and better order of the energy state distribution of the spray-deposited QD solid comparing with the spin-coated one. Thus, photodetectors based on spray deposition of QD solids demonstrate an excellent device performance, with the responsivity achieving 365.1 A/W and the detectivity reaching up to 1.4 × 1012 Jones under an illumination power of 63.5 μW/cm2 at a wavelength of 1250 nm. The spray-deposited device performances indicate a great potential of spray deposition of large sized QDs in large-scale fabrications for optoelectronics using longer wavelengths.

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Spray-deposited PbS colloidal quantum dot solid for near-infrared photodetectors

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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