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Showing 1 to 12 of 13 entries
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Quantum size confinement in gallium selenide nanosheets: band gap tunability versus stability limitation.

Nanotechnology

Andres-Penares D, Cros A, Martínez-Pastor JP, Sánchez-Royo JF.
PMID: 28291012
Nanotechnology. 2017 Apr 28;28(17):175701. doi: 10.1088/1361-6528/aa669e. Epub 2017 Mar 14.

Gallium selenide is one of the most promising candidates to extend the window of band gap values provided by existing two-dimensional semiconductors deep into the visible potentially reaching the ultraviolet. However, the tunability of its band gap by means...

Formation of Si/SiO.

Frontiers in chemistry

Gongalsky MB, Kargina JV, Cruz JF, Sánchez-Royo JF, Chirvony VS, Osminkina LA, Sailor MJ.
PMID: 30984738
Front Chem. 2019 Mar 29;7:165. doi: 10.3389/fchem.2019.00165. eCollection 2019.

We propose a rapid, one-pot method to generate photoluminescent (PL) mesoporous silicon nanoparticles (PSiNPs). Typically, mesoporous silicon (meso-PSi) films, obtained by electrochemical etching of monocrystalline silicon substrates, do not display strong PL because the silicon nanocrystals (nc-Si) in the...

Optical Contrast and Raman Spectroscopy Techniques Applied to Few-Layer 2D Hexagonal Boron Nitride.

Nanomaterials (Basel, Switzerland)

Krečmarová M, Andres-Penares D, Fekete L, Ashcheulov P, Molina-Sánchez A, Canet-Albiach R, Gregora I, Mortet V, Martínez-Pastor JP, Sánchez-Royo JF.
PMID: 31336572
Nanomaterials (Basel). 2019 Jul 22;9(7). doi: 10.3390/nano9071047.

The successful integration of few-layer thick hexagonal boron nitride (hBN) into devices based on two-dimensional materials requires fast and non-destructive techniques to quantify their thickness. Optical contrast methods and Raman spectroscopy have been widely used to estimate the thickness...

Nanotexturing To Enhance Photoluminescent Response of Atomically Thin Indium Selenide with Highly Tunable Band Gap.

Nano letters

Brotons-Gisbert M, Andres-Penares D, Suh J, Hidalgo F, Abargues R, Rodríguez-Cantó PJ, Segura A, Cros A, Tobias G, Canadell E, Ordejón P, Wu J, Martínez-Pastor JP, Sánchez-Royo JF.
PMID: 27080194
Nano Lett. 2016 May 11;16(5):3221-9. doi: 10.1021/acs.nanolett.6b00689. Epub 2016 Apr 19.

Manipulating properties of matter at the nanoscale is the essence of nanotechnology, which has enabled the realization of quantum dots, nanotubes, metamaterials, and two-dimensional materials with tailored electronic and optical properties. Two-dimensional semiconductors have revealed promising perspectives in nanotechnology....

Enhancing the photocatalytic properties of PbS QD solids: the ligand exchange approach.

Nanoscale

Abargues R, Navarro J, Rodríguez-Cantó PJ, Maulu A, Sánchez-Royo JF, Martínez-Pastor JP.
PMID: 30644959
Nanoscale. 2019 Jan 23;11(4):1978-1987. doi: 10.1039/c8nr07760f.

Surface engineering of nanomaterials is a promising tool towards the design of new materials for conversion of solar energy into chemical energy. In this work, we examine the influence of ligand exchange on the photocatalytic performance of solution-processed PbS...

Extrinsic Effects on the Optical Properties of Surface Color Defects Generated in Hexagonal Boron Nitride Nanosheets.

ACS applied materials & interfaces

Krečmarová M, Canet-Albiach R, Pashaei-Adl H, Gorji S, Muñoz-Matutano G, Nesládek M, Martínez-Pastor JP, Sánchez-Royo JF.
PMID: 34520163
ACS Appl Mater Interfaces. 2021 Sep 29;13(38):46105-46116. doi: 10.1021/acsami.1c11060. Epub 2021 Sep 14.

Hexagonal boron nitride (hBN) is a wide-band gap van der Waals material able to host light-emitting centers behaving as single photon sources. Here, we report the generation of color defects in hBN nanosheets dispersed on different kinds of substrates...

Boosting Long-Term Stability of Pure Formamidinium Perovskite Solar Cells by Ambient Air Additive Assisted Fabrication.

ACS energy letters

Salim KMM, Masi S, Gualdrón-Reyes AF, Sánchez RS, Barea EM, Kreĉmarová M, Sánchez-Royo JF, Mora-Seró I.
PMID: 34660905
ACS Energy Lett. 2021 Oct 08;6(10):3511-3521. doi: 10.1021/acsenergylett.1c01311. Epub 2021 Sep 13.

Due to the high industrial interest for perovskite-based photovoltaic devices, there is an urgent need to fabricate them under ambient atmosphere, not limited to low relative humidity (RH) conditions. The formamidinium lead iodide (FAPI) perovskite α-black phase is not...

Ultrapure laser-synthesized Si nanoparticles with variable oxidation states for biomedical applications.

Journal of materials chemistry. B

Al-Kattan A, Ryabchikov YV, Baati T, Chirvony V, Sánchez-Royo JF, Sentis M, Braguer D, Timoshenko VY, Estève MA, Kabashin AV.
PMID: 32263775
J Mater Chem B. 2016 Dec 28;4(48):7852-7858. doi: 10.1039/c6tb02623k. Epub 2016 Nov 21.

We employ a method of femtosecond laser fragmentation of preliminarily prepared water-dispersed microcolloids to fabricate aqueous solutions of ultrapure bare Si-based nanoparticles (Si-NPs) and assess their potential for biomedical applications. The nanoparticles appear spherical in shape, with low size...

Femtosecond laser fragmentation from water-dispersed microcolloids: toward fast controllable growth of ultrapure Si-based nanomaterials for biological applications.

Journal of materials chemistry. B

Blandin P, Maximova KA, Gongalsky MB, Sanchez-Royo JF, Chirvony VS, Sentis M, Timoshenko VY, Kabashin AV.
PMID: 32261049
J Mater Chem B. 2013 May 21;1(19):2489-2495. doi: 10.1039/c3tb20285b. Epub 2013 Apr 04.

An ultrashort laser-assisted method for fast production of concentrated aqueous solutions of ultrapure Si-based colloidal nanoparticles is reported. The method profits from the 3D geometry of femtosecond laser ablation of water-dispersed microscale colloids, prepared preliminarily by the mechanical milling...

Optical contrast of 2D InSe on SiO.

Nanotechnology

Brotons-Gisbert M, Andres-Penares D, Martínez-Pastor JP, Cros A, Sánchez-Royo JF.
PMID: 28117306
Nanotechnology. 2017 Mar 17;28(11):115706. doi: 10.1088/1361-6528/aa5bb1. Epub 2017 Jan 24.

The particular optical and electronic properties recently reported for 2D InSe depict this 2D material as being very versatile for future electronic and optoelectronic devices with tunable and optimized functionalities. For its fundamental study and the development of practical...

Two-Dimensional Indium Selenide for Sulphur Vapour Sensing Applications.

Nanomaterials (Basel, Switzerland)

Andres-Penares D, Canet-Albiach R, Noguera-Gomez J, Martínez-Pastor JP, Abargues R, Sánchez-Royo JF.
PMID: 32708372
Nanomaterials (Basel). 2020 Jul 18;10(7). doi: 10.3390/nano10071396.

Surface-to-volume ratio in two-dimensional (2D) materials highlights among their characteristics as an inherent and intrinsic advantage taking into account their strong sensitivity to surface effects. For this reason, we have proposed in this work micromechanically exfoliated 2D nanosheets of...

Out-of-plane orientation of luminescent excitons in two-dimensional indium selenide.

Nature communications

Brotons-Gisbert M, Proux R, Picard R, Andres-Penares D, Branny A, Molina-Sánchez A, Sánchez-Royo JF, Gerardot BD.
PMID: 31477714
Nat Commun. 2019 Sep 02;10(1):3913. doi: 10.1038/s41467-019-11920-4.

Van der Waals materials offer a wide range of atomic layers with unique properties that can be easily combined to engineer novel electronic and photonic devices. A missing ingredient of the van der Waals platform is a two-dimensional crystal...

Showing 1 to 12 of 13 entries