Colloidally stable selenium@copper selenide core@shell nanoparticles as selenium source for manufacturing of copper–indium–selenide solar cells

Dong, Hailong; Quintilla, Aina; Cemernjak, Marco; Popescu, Radian; Gerthsen, D.; Ahlswede, Erik; Feldmann, Claus

doi:10.1016/j.jcis.2013.10.001

Cited by 19 publications

(6 citation statements)

References 25 publications

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Section: Introductionmentioning

confidence: 99%

“…The formation of nanowires however is a promising approach to alleviate this difficulty and control and optimize the microstructure of Se materials. Se-NWs have been investigated for high-speed photodetection, 12 as efficient catalysts, 20 for solar cells, 21 as fiber-based electronics, 22,23 for high-performance lithium-ion batteries, 24,25 and as chemical sensors. 26 To fully exploit the potential of Se-NW-based devices, however, significant progresses must be made on two fronts: the deeper understanding of their photocarrier dynamics and their fabrication.…”

Section: ■ Introductionmentioning

confidence: 99%

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Direct Synthesis of Selenium Nanowire Mesh on a Solid Substrate and Insights into Ultrafast Photocarrier Dynamics

et al. 2018

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Selenium (Se) nanowires have generated much interest both for the fundamental understanding of crystal formation and growth and for technological applications in optoelectronics, imaging, piezoelectricity, catalysis, and energy harvesting and storage. Several methods have been established to synthesize Se nanowires, but they require sophisticated fabrication steps, are energy intensive, and may involve complex chemical reactions. Moreover, despite an increasing interest, little is known regarding photocarrier dynamics of Se nanowires. Here, we investigate a solution-based approach for the facile synthesis of single-crystal Se nanowires over the large scale where nanowires are directly grown from an amorphous bulk in a solution at room temperature without any chemical reaction. We study the nanowire nucleation and growth mechanism via electron microscopy. We also investigate, for the first time, the charge carrier dynamics and mobility of Se nanowire meshes by means of ultrafast transient absorption spectroscopy, nanosecond flash photolysis, and time-resolved terahertz spectroscopy. These contact-free and noninvasive approaches reveal a lifetime on the picosecond scale for free carriers and on the microsecond scale for trapped carriers, both of which are limited by trap-assisted recombination and a free carrier mobility of ∼3.0 cm 2 V −1 s −1. Our work for the first time reveals the rationale behind the excellent properties of some Se NW-based optoelectronic devices. It also highlights the simplicity and robustness of the novel Se nanowire synthesis scheme and paves the way toward the simple fabrication of advanced nanowire-based electronic and optoelectronic nanodevices.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Direct Synthesis of Selenium Nanowire Mesh on a Solid Substrate and Insights into Ultrafast Photocarrier Dynamics

et al. 2018

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“…Nano-Se are fascinating species that have been explored by researchers to produce advanced materials for various applications (Chaudhary and Mehta, 2014;Dong et al, 2014;Peng et al, 2015;Kolay et al, 2019;Ferro et al, 2021). Many biological studies were performed using Nano-Se, including Frontiers in Nanotechnology frontiersin.org antiviral, antimicrobial, anti-oxidant, anticancer, antidiabetic, and antiparasitic (Khurana et al, 2019;Shi et al, 2021;Bisht et al, 2022).…”

Section: Antiviral Properties Of Nano-sementioning

confidence: 99%

Exploring nanoselenium to tackle mutated SARS-CoV-2 for efficient COVID-19 management

Singh

Singh²,

Kumar³

et al. 2022

Front. Nanotechnol.

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Despite ongoing public health measures and increasing vaccination rates, deaths and disease severity caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its new emergent variants continue to threaten the health of people around the world. Therefore, there is an urgent need to develop novel strategies for research, diagnosis, treatment, and government policies to combat the variant strains of SARS-CoV-2. Since the state-of-the-art COVID-19 pandemic, the role of selenium in dealing with COVID-19 disease has been widely discussed due to its importance as an essential micronutrient. This review aims at providing all antiviral activities of nanoselenium (Nano-Se) ever explored using different methods in the literature. We systematically summarize the studied antiviral activities of Nano-Se required to project it as an efficient antiviral system as a function of shape, size, and synthesis method. The outcomes of this article not only introduce Nano-Se to the scientific community but also motivate scholars to adopt Nano-Se to tackle any serious virus such as mutated SARS-CoV-2 to achieve an effective antiviral activity in a desired manner.

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“…CdSe and CdS are very important semiconductor materials and pseudo binary compounds of Cd(SSe) thin films can be effectively used as good candidates for solar cell applications. Cd(SSe) thin films were synthesized by various techniques such as chemical bath deposition (CBD), [17][18][19] sputtering 20 and evaporation techniques [21][22][23][24] etc. Among these synthesis techniques APT has shown remarkable potential features and cost effectiveness compared to routine aqueous chemical techniques.…”

Section: Introductionmentioning

confidence: 99%

Photocurrent enhancement in a Cu₂Cd(SSe)₂ photoanode synthesized via an arrested precipitation route

et al. 2016

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Colloidally stable selenium@copper selenide core@shell nanoparticles as selenium source for manufacturing of copper–indium–selenide solar cells

Cited by 19 publications

References 25 publications

Direct Synthesis of Selenium Nanowire Mesh on a Solid Substrate and Insights into Ultrafast Photocarrier Dynamics

Direct Synthesis of Selenium Nanowire Mesh on a Solid Substrate and Insights into Ultrafast Photocarrier Dynamics

Exploring nanoselenium to tackle mutated SARS-CoV-2 for efficient COVID-19 management

Photocurrent enhancement in a Cu₂Cd(SSe)₂ photoanode synthesized via an arrested precipitation route

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Colloidally stable selenium@copper selenide core@shell nanoparticles as selenium source for manufacturing of copper–indium–selenide solar cells

Cited by 19 publications

References 25 publications

Direct Synthesis of Selenium Nanowire Mesh on a Solid Substrate and Insights into Ultrafast Photocarrier Dynamics

Direct Synthesis of Selenium Nanowire Mesh on a Solid Substrate and Insights into Ultrafast Photocarrier Dynamics

Exploring nanoselenium to tackle mutated SARS-CoV-2 for efficient COVID-19 management

Photocurrent enhancement in a Cu2Cd(SSe)2 photoanode synthesized via an arrested precipitation route

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Photocurrent enhancement in a Cu₂Cd(SSe)₂ photoanode synthesized via an arrested precipitation route