Effect of ammonia plasma treatment on the luminescence and stability of porous silicon

Hernando-Pérez, Mercedes; Dutt, A.; Mora, B.; Mon-Pérez, E.; Villagrán-Munı́z, M.; García-Sánchez, M.F.; Santana, G.

doi:10.1016/j.matlet.2018.01.113

Cited by 12 publications

(2 citation statements)

References 17 publications

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“…Several investigations related to the structural, optical, and electrical analysis of Si‐based nanomaterials have been explored and discussed in some of our recently published reports. [ 22–29 ] Now, keeping in mind the optical responses offered by Si‐based compound nanomaterials (QDs, SiO x , SiN x , SiC) and the experience gained from our previous studies, we believe that the PL properties could be a linking point to the biological research. Moreover, in this review, the Web of Science database has been used to compile information about the number of literature reports in the area, in general, for bioimaging and optical diagnostics.…”

Section: Introductionmentioning

confidence: 97%

Silicon Compound Nanomaterials: Exploring Emission Mechanisms and Photobiological Applications

Dutt,

Salinas,

Martínez-Tolibia

et al. 2023

Advanced Photonics Research

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After the first visible photoluminescence (PL) from porous silicon (pSi), continuous efforts are made to fabricate Si‐based compound nanomaterials embedded in matrices such as oxide, nitride, and carbide to improve optical performance and industrial acceptability. These nanomaterials’ functional and desired properties (nanoparticles and quantum dots embedded in matrices) can vary significantly when embedded in technologically relevant matrices. However, exploring the exact emission mechanisms is one of the remaining challenges from the past few decades. To cover this gap, this review discusses the morphological and optoelectronic properties of Si‐based compound nanomaterials and their correlation with the quantum confinement effect and different surface states to find precise emission mechanisms. One of the biggest challenges of using silicon nanomaterials in the biological sector is the development of sensitive materials of low/acceptable toxicity for identifying target analytes either inside/outside the biological platforms. In this scenario, silicon‐based compound matrices can offer different characteristics and advantages depending on their size configurations and PL emission mechanisms. On the other hand, a proper understanding of these multifaceted silicon nanomaterials’ optical properties (emission mechanisms) can be exploited for pathogen detection and in situ applications in cells and tissues, embarking on a new era of bioimaging technology.

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Section: Introductionmentioning

confidence: 97%

Silicon Compound Nanomaterials: Exploring Emission Mechanisms and Photobiological Applications

Dutt,

Salinas,

Martínez-Tolibia

et al. 2023

Advanced Photonics Research

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“…It was accidentally discovered by Uhlir at Bell Laboratories in the mid-1950s [ 24 ]. The unique features of the PS—such as its extremely large surface area to volume ratio, its easy fabrication, its active surface chemistry, and its compatibility with microelectronic and MEMS (Micro-Electro-Mechanical Systems) inspired research into applications ranging from sensors to electronics, biomedicine, optics, solar cells, and batteries [ 25 , 26 , 27 , 28 , 29 ]. Barillaro et al integrated a composite of PS/gold nanostructures into JFET (Junction Field-effect Transistor) to realize a novel chemitransistor gas sensor which shows a fast and reliable response to NO 2 [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Functionalization of Porous Silicon/WO3 Nanorods with Pd Nanoparticles and Their Enhanced NO2-Sensing Performance at Room Temperature

Xia

Zhao

et al. 2018

Materials

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The decoration of noble metal nanoparticles (NPs) on the surface of metal oxide semiconductors to enhance material characteristics and gas-sensing performance has recently attracted increasing attention from researchers worldwide. Here, we have synthesized porous silicon (PS)/WO3 nanorods (NRs) functionalized with Pd NPs to enhance NO2 gas-sensing performance. PS was first prepared using electrochemical methods and worked as a substrate. WO3 NRs were synthesized by thermally oxidizing W film on the PS substrate. Pd NPs were decorated on the surface of WO3 NRs via in-situ reduction of the Pd complex solution by using Pluronic P123 as the reducing agent. The gas-sensing characteristics were tested at different gas concentrations and different temperatures ranging from room temperature to 200 °C. Results revealed that, compared with bare PS/WO3 NRs and Si/WO3 NRs functionalized with Pd NPs, the Pd-decorated PS/WO3 NRs exhibited higher and quicker responses to NO2, with a detection concentration as low as 0.25 ppm and a maximum response at room temperature. The gas-sensing mechanism was also investigated and is discussed in detail. The high surface area to volume ratio of PS and the reaction-absorption mechanism can be explained the enhanced sensing performance.

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Laser wavelength effect on GaN nanostructure films morphological properties deposited by PLD technique

Taleb,

Fakhri,

Mohammed

et al. 2024

J Opt

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Effect of ammonia plasma treatment on the luminescence and stability of porous silicon

Cited by 12 publications

References 17 publications

Silicon Compound Nanomaterials: Exploring Emission Mechanisms and Photobiological Applications

Silicon Compound Nanomaterials: Exploring Emission Mechanisms and Photobiological Applications

Effect of the Functionalization of Porous Silicon/WO3 Nanorods with Pd Nanoparticles and Their Enhanced NO2-Sensing Performance at Room Temperature

Laser wavelength effect on GaN nanostructure films morphological properties deposited by PLD technique

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