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Endre Horvath

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Related publications (78)

Page 4 of 4

Nanowires of Methylammonium Lead Iodide (CH(3)NH(3)Pbl(3)) Prepared by Low Temperature Solution-Mediated Crystallization

László Forró, Endre Horvath, Richard Gaal, Massimo Spina

We report the synthesis of Methylammonium Lead Iodide (CH3NH3PbI3) nanowires by a low temperature solution processed crystallization using a simple slip-coating method. The anisotropic particle shape exhibits advantages over nanoparticles in terms of charg ...

Amer Chemical Soc2014

Synthesis of Homogeneous Manganese-Doped Titanium Oxide Nanotubes from Titanate Precursors

László Forró, Arnaud Magrez, Kurt Schenk, Bálint Náfrádi, Endre Horvath, Zlatko Mickovic, Péter Szirmai, Rita Smajda, Dejan Dokic

We report a novel synthesis route of homogeneously manganese-doped TiO2 nanotubes in a broad concentration range. The scroll-type trititanate (H2Ti3O7) nanotubes prepared by hydrothermal synthesis were used as precursors. Mn2+ ions were introduced by an io ...

Amer Chemical Soc2013

In Vitro Investigation of the Cellular Toxicity of Boron Nitride Nanotubes

László Forró, Arnaud Magrez, Endre Horvath, Rita Smajda, Lenke Horváth

Nanotubes present one of the most promising opportunities in nanotechnology with a plethora of applications in nanoelectronics, mechanical engineering, as well as in biomedical technology. Due to their structure and some physical properties, boron nitride ...

American Chemical Society2011

Organic-inorganic hybrid perovskite CH3NH3PbI3: structural consequences of water absorption

László Forró, Endre Horvath, Alla Arakcheeva, Massimo Spina

IUCr/Wiley2016

Tuning the color of high-karat gold in Au-TiO2 nanoparticle composites all the way to black

László Forró, Andrzej Sienkiewicz, Endre Horvath, Claudio Grimaldi, Lidia Rocoffort de Vinnière

For centuries, artisans have harnessed gold nanoparticles to imbue their creations with the vibrant hues that captivate the eye through interactions with visible light. In modern times, these distinct optoelectronic characteristics have pivoted toward the ...

Cell Press2024

Ultra-Low Thermal Conductivity in Organic-Inorganic Hybrid Perovskite CH3NH3PbI3

László Forró, Endre Horvath, Richard Gaal, Massimo Spina, Jacim Jacimovic, Andrea Pisoni

We report on the temperature dependence of thermal conductivity of single crystalline and polycrystalline organometallic perovskite CH3NH3PbI3. The comparable absolute values and temperature dependence of the two samples' morphologies indicate the minor ro ...

Amer Chemical Soc2014

Cyan titania nanowires: Spectroscopic study of the origin of the self-doping enhanced photocatalytic activity

László Forró, Arnaud Magrez, Bálint Náfrádi, Endre Horvath, Richard Gaal, Alla Arakcheeva, Massimo Spina, Jacim Jacimovic, Péter Szirmai, Laurent Syavoch Bernard

We report a detailed spectroscopic study of Ti3+ self-doped TiO2 nanowires prepared by high temperature annealing of the protonated titanate nanowires (TiONW) in hydrogen atmosphere. Hydrogenation causes a color change from white to cyan and a major increa ...

Elsevier2017

The effect of titania precursor on the morphology of prepared TiO2/MWCNT nanocomposite materials

László Forró, Arnaud Magrez, Endre Horvath, Dóra Fejes-Kajtár

Since materials science is of great importance, the application of composite materials based on carbon nanotubes (CNTs) is widely investigated. Current work is aimed at preparing nanocomposites of TiO2/MWCNT using an impregnation method combined with slow ...

Wiley-V C H Verlag Gmbh2014

Influence of the organic cation disorder on photoconductivity in ethylenediammonium lead iodide, NH3CH2CH2NH3PbI4

László Forró, Philip Pattison, Bálint Náfrádi, Alla Arakcheeva, Endre Horvath, Márton Kollár, Pavao Roko Andricevic, Anastasiia Glushkova

We report the synthesis and crystal structure of an organic–inorganic compound, ethylenediammonium lead iodide, NH3CH2CH2NH3PbI4. Synchrotron-based single crystal X-ray diffraction experiments revealed that the pristine and thermally treated crystals diffe ...

2018

Tailoring thermal conduction in anatase TiO2

László Forró, Luca Rossi, Endre Horvath, Helmuth Berger, Andrea Pisoni, Jacim Jacimovic, Péter Szirmai, Xavier François Mettan

Thermal conductivity (κ) plays an essential role in functional devices. It is advantageous to design materials where one can tune κ in a wide range according to its function: single-crystals and nanowires of anatase polymorph of titanium dioxide, broadly u ...

Springer2019

High-Efficiency Solid-State Dye-Sensitized Solar Cells: Fast Charge Extraction through Self-Assembled 3D Fibrous Network of Crystalline TiO2 Nanowires

Michael Graetzel, Shaik Mohammed Zakeeruddin, László Forró, Arnaud Magrez, Endre Horvath, Nicolas Tétreault, Peng Wang, Thomas Moehl, Rita Smajda, Laurent Gabriel Félix Alexandre Stéphane Bungener, Jérémie Minh-Châu Brillet

Herein, we present a novel morphology for solid-state dye-sensitized solar cells based on the simple and straightforward self-assembly of nanorods into a 3D fibrous network of fused single-crystalline anatase nanowires. This architecture offers a high roug ...

American Chemical Society2010

Chemical challenges during the synthesis of MWCNT-based inorganic nanocomposite materials

László Forró, Arnaud Magrez, Endre Horvath

Multiwalled carbon nanotubes (MWCNTs) were successfully covered with metal oxides - such as TiO2, ZnO, Al2O3, SnO2, and In2O3 nanoparticles - with different preparation methods under solvent conditions. The applied synthesis techniques were impregnation, a ...

Wiley-V C H Verlag Gmbh2014

Nanowires of organic-inorganic perovskites

László Forró, Endre Horvath, Massimo Spina

An organic-inorganic perovskite CH3NH3PbI3 nanowire showing a length-width aspect ratio from 5-400 up to 109 and a width-height ratio of 1-100 up to 1-10000. Further, the invention is embodied as a process for making the nanowire wherein at least a polar a ...

2017

Highly flexible CH3NH3PbI3 micro- and nanowires

László Forró, Luca Rossi, Endre Horvath, Massimo Spina, Márton Kollár, Luka Ciric, Raphaël Foschia

CH3NH3PbI3 is known to be very efficient in photon to electron conversion, which makes it extremely popular in opto-electronic applications ranging from solar cells to photodetectors. The material is very brittle in bulk, single crystalline, and thin film ...

AIP Publishing2021

Mechanical signatures of degradation of the photovoltaic perovskite CH3NH3PbI3 upon water vapor exposure

László Forró, Bálint Náfrádi, Endre Horvath, Wanda Andreoni, Massimo Spina, Ayat Karimi

We report on the mechanical properties of CH3NH3PbI3 photovoltaic perovskite measured by nanoindentation. The Young's modulus (E) of the pristine sample is 20.0 +/- 1.5GPa, while the hardness (H) is 1.0 +/- 0.1GPa. Upon extended exposure to water vapor, bo ...