For the past decade, halide perovskites have been subject to tremendous interest from the material science community, due to their potential use in high efficiency solar cells and bright light-emitting devices. Some key attributes of these perovskite materials include cheap fabrication processes, strong absorption coefficients and low non-radiative carrier recombination rates. Recently, the synthesis of 2D halide perovskite crystals have been achieved, demonstrating promising stability properties, as well as large carrier mobilities and intense photo- and electro-luminescence.
2D materials have triggered an unparalleled momentum, driving research on a new class of materials: van der Waals heterostructures, consisting in different 2D crystals stacked on top of each-others. These artificial materials present new and intriguing electronic properties, taking advantage of the absence of long-range order, 2D excitons or many-bodies instabilities such as superconductivity, and allowing observation of quantum relativistic phenomena.
This project aims at creating van der Waals heterostructures by stacking 2D halide perovskite crystals in heterostructures with graphene and studying the electronic properties of the assembly. The new devices are expected to have a number of technologically important properties and have a realistic potential to contribute to innovative semiconductor technologies.
I have been graduated in Chemical Physics from ESPCI in Paris. As championed by its former director, Nobel laureate Pierre-Gilles de Gennes, this Grande École distinctively educates its students about science at the crossroads of physics and chemistry, on both theoretical and practical levels. I feel perfectly in line with its education paradigm:
What is expected from you ?
- a genuine, hands-on practice at the bench;
- self-built judgement: know how to learn from books, take notes, build charts on cross-disciplinary topics;
- a mixed culture: a physicist who is able to carry out basic chemical synthesis; a chemist who understands what to expect from his/her new molecules;
- and above all, be bold!
Pierre-Gilles de Gennes
As I have been made aware of global warming since my childhood, I’ve wanted to contribute to inventing solutions by carrying out research on emerging photovoltaics technologies. In 2017 I was hired by CEA (the French Alternative Energies Commission) as a 6-month intern to design and develop encapsulation materials for solar devices.
That unique experience provided me with the legitimacy to visit SLAC National Accelerator Laboratory (CA, U.S.A.) in 2018, to try to understand the octahedral tilt within halide perovskite as a visiting student researcher. I am convinced that the perovskite is a class of materials that has the potential to impact the future of modern civilisation. Following up with this project, I started a PhD fellowship under the supervision of Prof Sir Andre Geim at the University of Manchester (U.K.) to create Van der Waals 2D heterostructure combining halide perovskites and other 2D materials like graphene.
CEA is the French public research institution dedicated to nuclear and renewable energies. It was founded by President Charles de Gaulle after World War II, to warrant France’s sovereignty in the realm of energy and defence capabilities (including those based on nuclear reactions). De Gaulle named Frédéric Joliot, the 1935 chemistry Nobel laureate and an ESPCI Alumnus as CEA’s founding director, thus ensuring that excellence is the main driver of the institution. CEA is currently ranked #1 by Reuters as the World most innovative research institution.
SLAC National Accelerator Laboratory, located in the heart of Silicon Valley, started in 1962 as the world’s largest linear accelerator on the joint initiative of Stanford University and the United States Department of Energy (DOE). Over the last 50 years, it has grown into a large and diverse 1,600 employees workforce performing cutting-edge research across a wide range of disciplines, including energy, cosmology and accelerator technologies. The top-notch research facilities, as well as the historical strengths in particle physics, allowed scientists at SLAC to discover the universe fundamental building blocks, leading to 6 Nobel prizes both in Physics and Chemistry.
Sir Andre Geim was awarded the Nobel Prize in Physics in 2010 for groundbreaking experiments regarding the two-dimensional material graphene.
I’m always keen on interacting with – and learning from – new people, so please do not hesitate to contact me!