LAYERED NANOMATERIALS


Welcome to our research team!

Engineering Layered Perovskites for Optoelectronics.

We are a highly motivated research team working on the design and fabrication of low dimensional nanomaterials, in particular luminescent metal-halide 2D layered perovskites. They are emerging as great semiconductors for the next generation of optoelectronic devices, such as light emitting diodes, solar cells, lasers, and photodetectors. In addition to their structural and chemical stability, which is missing in the 3D structures, they are enriched with a variety of fascinating optoelectronic and excitonic properties that our team seeks to understand, discovering non conventional applications. Our team is under the great umbrella of the Nanochemistry Research Line: www.iit.it/research/lines/nanochemistry

Our Research Milestones

2021 - We explored different organic cations to change the emission of 2D layered perovskites. Adv. Mater.

2021 - We demonstrated the mechanical tunning of platelets in stretched polymer films. Nanoscale.

2021 - We chemically changed the emission, from blue to white colour, of 2D layered structures made with conductive organic cations. Adv. Phot. Res.

2020 - We provide a better understanding of the directional anisotropy of vibrational modes on 2D layered perovskites induced by molecular orientation. ACS Nano.

2020 - We sucessfully monitor via HRTEM the formation of 2D nanotiles of perovskites in solution. Nano Letter.

2020 - Highly anisotropic core/shell emitting nanocrystals with a bone-shape. Adv. Opt. Mater.

2019 - We prove for first time the extreme sensitivity of the emission of 2D layered perovskites to cyclic mechanical loading in the range of tens of MPa. Adv. Mater.

2019 - An eco-friendly synthesis for the fabrication of 2D layered perovsites and enhanced PLQY via mechanical exfoliation. Nanoscale.

2018 - We show how to tune surface interactions on highly complex shaped nanocrystals to tailor the architecture of their 2D assembled monolayers. Nat. Commun.

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2017 - We produce luminescent and electrically conductive perovskite crystals following pre‐designed patterns via laser writing. Adv. Funct. Mater.

And click here to have a look at our Adv. Funct. Mater. cover art!

And here to see the great works recently highligthed by Advanced Materials celebrating Women in Materials Science 2021! Our is included and it was also highlithed by Nature News here!

COLLABORATIONS

Optoelectronics, IIT. Materials Zone. Italy/Israel.

2019- Our team is actively participating on the project 'AI4QDs - Novel Nanocrystals Structures' in the frame of an Italy-Israel R&D Cooperation Program. We are building a costumized app for data collection and management for our synthesis and characterization of 2D layered perovskites based on FAIR data principles. The ultimate goal is to design new structures by using different molecular descriptors defined by machine learning.

AI4QDs with Materials Zone, Israel.

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Carousel imageCarousel imageA spontaneously formed CsPbBr3 mosaic of nanosheets due to RP faults!Fresh CsPbBr3 self-assembled nanoribbons.Resulting CsPbBr nanosheets after 2 months.

National Center for Electron Microscopy Facility at The Molecular Foundry. USA.

2018- Through this collaborative project, we are investigating in situ the temperature dependent transformation of low dimensional nanocrystals. We also explore different conditions for studying such crystals in their (liquid) nature enviroment to better understand surface interactions leading to different crystal morphologies and thus, changes on their optoelectronic properties.

Nanomaterials for Biomedical Applications, IIT. University of York. Italy/UK.

A challenge project that we started 2 years ago with a strong technical support from the EM facility at IIT to study nanocrystals in water under electron beam irradiation in a high resolution transmision electron microscope. We have acquired time lapse images for different type of particles and successfuly recorded the motion of magnetic nanocubes. These results were combined with theoretical analysis to understand the set of competitive interactions among nanocrystals that leads to the formation of zig-zag chains.

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Our lab!

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Us!

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PEOPLE

Aarya Prabhakaran , PhD student Physicist

Dr. Balaji Dhanabalan, Fellow

Electronic Engineer

Dr. Zhiya Dang. PostDoc.

In 2018 and 2019 Dr. Dang joined our project at the NCEM facility of The Molecular Foundry. In 2020 Dr. Dang became an associate professor at the Sun Yat-Sen University. Shenzhen, China.

Dorwal Marchelli, Master Student in Physics from UniGe in collaboration with the Optoelectronics group at IIT.

Dr. Andrea Castelli. Former PhD student in our team.

Currently , Dr. Castelli is holding a KTP Associate position at Cardiff University. Wales, UK.

Dr. Sara Accornero. Former PhD student in our team.

Currently , Dr. Accornero is a school professor in Italy and she is teaching Chemistry.