## Daniel Suchet

**Office :**!IPVF

**Department/Laboratory/Direction :**CA/DER/DEP/PHYS

**Site web :**http://www.penangol.fr

**Additional function :**

CA/DER/LAB/IPVF

**Presentation :**

Enseignant-chercheur au dĂ©partement de physique et Ă l'Institut du PhotovoltaĂŻque d'Ile de France (IPVF).

Avant Ă§a, ingĂ©nieur de l'Ecole polytechnique (X2008), Master Physique Quantique de l'Ecole Normale SupĂ©rieure de Paris, ThĂ¨se au Laboratoire Kastler Brossel, JSPS Fellowship au RCAST (UniversitĂ© de Tokyo), postdoc ANR Industrial Chair au Laboratoire de Physique des Interfaces et des Couches Minces (Ecole polytechnique).

Membre du comitĂ© Ă©xĂ©cutif du Tournoi International des Physiciens (IPT), Ă©diteur en chef du journal pĂ©dagogique Emergent Scientist, membre de la commission Jeune de la SociĂ©tĂ© FranĂ§aise de Physique.

MĂ©diation scientifique : confĂ©rences grand public ("Comment parler de Science avec de la Fiction ?", "Energie et sociĂ©tĂ©"), Ambassadeur de la FĂŞte de la Science pour la rĂ©gion ĂŽle de France (2018)

**Publications :**

Vous trouverez l'ensemble des publications de Suchet Daniel sur le site de l'annuaire de l'Ecole

**Moodle :**

#### PHY/MEC471 - MODAL - Tournoi international de Physique (IPT) (2020-2021)

#### PHY530 - Refresher Course in Physics (2020-2021)

#### PHY558B - Physics and Engineering of Photovoltaic Devices (2020-2021)

Course Outline:

- General Introduction, “What is Photovoltaics?” Solar energy resource, current use of PV
- Introduction to the physics of crystalline semiconductors: band structure, intrinsic and extrinsic semiconductors, quasi-Fermi levels.
- Transport phenomena in semiconductors, recombination, the p-n junction. The photovoltaic effect
- Material junctions and energy band-diagrams. Metal/semiconductor contacts. Heterojunctions
- Optical absorption, solar spectrum and EQE. Solar cell efficiency limits. Equivalent circuit model.
- Crystalline silicon (c-Si) PV technology and operation. Basic and high efficiency c-Si cell architectures.
- PV technology overview and the cost of PV
- Modules, concentration, and advanced concepts

**Niveau requis :**

Recommended courses for Ecole polytechnique's students :

PHY430 - Advanced Quantum Physics and PHY433 - Statistical Physics**Langue du cours :** English**Credits ECTS :** 5

Course Outline:

- General Introduction, “What is Photovoltaics?” Solar energy resource, current use of PV
- Introduction to the physics of crystalline semiconductors: band structure, intrinsic and extrinsic semiconductors, quasi-Fermi levels.
- Transport phenomena in semiconductors, recombination, the p-n junction. The photovoltaic effect
- Material junctions and energy band-diagrams. Metal/semiconductor contacts. Heterojunctions
- Optical absorption, solar spectrum and EQE. Solar cell efficiency limits. Equivalent circuit model.
- Crystalline silicon (c-Si) PV technology and operation. Basic and high efficiency c-Si cell architectures.
- PV technology overview and the cost of PV
- Modules, concentration, and advanced concepts

**Niveau requis :**

Recommended courses for Ecole polytechnique students :

PHY430 - Advanced Quantum Physics and PHY433 - Statistical Physics**Course Language :** English**ECTS Credits :** 5

#### PHY205 - Introduction to Quantum Physics (2020-2021)

Quantum physics is the theoretical framework

for the description of nature at

the atomic length scale and below. According

to our present knowledge, it encompasses

the most fundamental physical

theory, and is the basis for everyday applications

like semi-conductor electrons,

lasers, medical imaging to name only a

few. In PHY205, students discover quantum

physics through the formalism of

Schrödinger’s wave mechanics, and learn

to describe simple, non-relativistic quantum

phenomena, mainly in one dimension,

by applying mathematics of classical

waves to which they have become familiar.

Subsequently, they are introduced to

the quantum-mechanical formalism of

which the central notion is the quantum

state. Students also become familiar with

the underlying mathematical structures,

Hilbert spaces and Hermitian operators,

and discover the quantum description

of known classical systems and concepts

such as free motion, the harmonic oscillator

and angular momentum. The course

also allows students to explore purely

quantum phenomena that have no classical

counterpart, such as the electron

spin, and a brief overview on quantum

communication may be provided. Throughout

the course, the abstract theory will

be illustrated by historic experimental

evidence and modern applications whenever

appropriate.

Upon completion of this course, students

will be able to explain the conceptual

difference between classical and quantum

behavior, and solve simple one- or

two-dimensional problems of quantum

mechanics in the framework of wave

mechanics. Furthermore, they will be

able to wield the abstract formalism of

quantum states in Hilbert spaces, and to

apply it on simple quantum systems.

Quantum physics is the theoretical framework for the description of nature at the atomic length scale and below. According to our present knowledge, it encompasses the most fundamental physical theory, and is the basis for everyday applications like semi-conductor electrons, lasers, medical imaging to name only a few. In PHY 205, students discover quantum physics through the formalism of Schrödinger’s wave mechanics, and learn to describe simple, non-relativistic quantum phenomena, mainly in one dimension, by applying mathematics of classical waves to which they have become familiar. Subsequently, they are introduced to the quantum-mechanical formalism of which the central notion is the quantum state. Students also become familiar with the underlying mathematical structures, Hilbert spaces and Hermitian operators, and discover the quantum description of known classical systems and concepts such as free motion, the harmonic oscillator and angular momentum. The course also allows students to explore purely quantum phenomena that have no classical counterpart, such as the electron spin, and a brief overview on quantum communication may be provided. Throughout the course, the abstract theory will be illustrated by historic experimental evidence and modern applications whenever appropriate.

Upon completion of this course, students will be able to explain the conceptual difference between classical and quantum behavior, and solve simple one- or two-dimensional problems of quantum mechanics in the framework of wave mechanics. Furthermore, they will be able to wield the abstract formalism of quantum states in Hilbert spaces, and to apply it on simple quantum systems.

#### PHY208 - Atoms and Lasers (2020-2021)

Light amplification by stimulated emission

of radiation (laser) holds a unique

place in the heart of physicists. Lasers

are at the same time a spectacular manifestation

of a quantum phenomenon, a

powerful and versatile tool ranging from

industrial applications (laser processing,

telemetry…) to fundamental research

(spectroscopy, cold atoms…) and a

remarkable workbench to acquire a better

understanding of key concepts in physics.

PHY 208 is an introduction to lightmatter

interactions through the intricate

relationship between atoms and lasers.

Importantly, this course will build on

experimental situations, and introduce

models with increasing complexity to

explain the observed results. As the basic

component of a laser is a source of light,

the course will start with basic spectroscopy,

and several atomic models will be

considered (Bohr model, Einstein coefficients,

Schrodinger model, etc.). The

emission of continuous laser light by

such atoms will be described from both

a classical (effective medium) and semiclassical

(population inversion) perspective.

The mirror will then be turned back

on the atoms, and several applications of

laser light revealing the behavior of atoms

will be discussed (Light, Stark and Zeeman

shift, Rabi oscillations etc.). Finally,

some practical perspectives on advanced

laser technologies and applications will be

given.

This course will not add many new physical

concepts, but rather show how results

obtained in previous courses (especially

in optics, classical and quantum mechanics)

can be used. Upon completion of

this course, students will have acquired

key understandings concerning the bilateral

interactions between laser devices

and atoms. They will have understood the

circumstances under which the emission

of useful coherent light can be produced,

and also the information that such light

can provide when analyzing atomic systems.

They will also be able to identify the

relevance, necessity, and limitations that

classical and quantum models display

when analyzing problems in this field.

They will also gain familiarity with some

laser device technologies.

Light amplification by stimulated emission of radiation (laser) holds a unique place in the heart of physicists. Lasers are at the same time a spectacular manifestation of a quantum phenomenon, a powerful and versatile tool ranging from industrial applications (laser processing, telemetry...) to fundamental research (spectroscopy, cold atoms,...) and a remarkable workbench to acquire a better understanding of key concepts in physics.

PHY208 is an introduction to light-matter interactions through the intricate relationship between atoms and lasers. Importantly, this course will build on experimental situations, and introduce models with increasing complexity to explain the observed results. As the basic component of a laser is a source of light, the course will start with basic spectroscopy, and several atomic models will be considered (Bohr model, Einstein coefficients, Schrodinger model, etc.). The emission of continuous laser light by such atoms will be described from both a classical (effective medium) and semi-classical (population inversion) perspective. The mirror will then be turned back on the atoms, and several applications of laser light revealing the behavior of atoms will be discussed (Light, Stark and Zeeman shift, Rabi oscillations etc.). Finally, some practical perspectives on advanced laser technologies and applications will be given.

This course will not add many new physical concepts, but rather show how results obtained in previous courses (especially in optics, classical and quantum mechanics) can be used. Upon completion of this course, students will have acquired key understandings concerning the bilateral interactions between laser devices and atoms. They will have understood the circumstances under which the emission of useful coherent light can be produced, and also the information that such light can provide when analyzing atomic systems. They will also be able to identify the relevance, necessity, and limitations that classical and quantum models display when analyzing problems in this field. They will also gain familiarity with some laser device technologies.

#### CoursPHY555 - Energy and Environment (2020-2021)

**Bilingual Course**

The general topic of energy, both at French and worldwide levels, represents some considerable challenge in this beginning of the twenty-first century. We should take up in the next few years a significant number of challenges including the depletion of fossil resources or the consequences of global warming. Understanding concepts related to energy, its most fundamental aspects in its various forms and many uses, becomes essential in the formation of an engineer. The impact on the environment, climate change, the reasonable use of fossil fuels and alternative solutions must be at the heart of its concerns.

This course is largely a about physics and applications. However, it introduces and develops numerous multidisciplinary concepts related to energy such as economy or environment. It will represent an introductory course for students who are considering to study in Masters for careers related to the problems of energy and sustainable development. It will give to other students some comprehensive and rigorous overview of problems, essential to understand our society and its issues.

The course consists of approximately three parts

1. The energy and its use

Historical context and definitions. First and second principles.

Orders of magnitude and fundamental interactions.

The different forms of energy. Primary and secondary Energy. Efficiencies.

Resource depletions. The peak oil discoveries.

The French and worldwide context.

The climatic consequences. The mechanism of the greenhouse effect.

CO2 emissions and international agreements.

2.Renewable energy

Different solutions: hydro power, wind power, solar, biomass and others.

Comparison of different type of primary energy in the production of electricity.

Hydrogen as energy vector for the future. The general problem of transport.

The technical, environmental and economic issues.

The recent improvement for the use of fossil fuels.

CO2 storage and other research topics.

3. Nuclear Energy

Principle of current reactors. The future generation 4.

The fuel cycle and resource depletion.

Problems and solution of waste storage.

The prospects of fusion for the production of electricity

The Tchernobyl, Fukushima and Three Mile Island accidents.

**Credits ECTS :** 5

**Bilingual Course**

The general topic of energy, both at French and worldwide levels, represents some considerable challenge in this beginning of the twenty-first century. We should take up in the next few years a significant number of challenges including the depletion of fossil resources or the consequences of global warming. Understanding concepts related to energy, its most fundamental aspects in its various forms and many uses, becomes essential in the formation of an engineer. The impact on the environment, climate change, the reasonable use of fossil fuels and alternative solutions must be at the heart of its concerns.

This course is largely a about physics and applications. However, it introduces and develops numerous multidisciplinary concepts related to energy such as economy or environment. It will represent an introductory course for students who are considering to study in Masters for careers related to the problems of energy and sustainable development. It will give to other students some comprehensive and rigorous overview of problems, essential to understand our society and its issues.

The course consists of approximately three parts

1. The energy and its use

Historical context and definitions. First and second principles.

Orders of magnitude and fundamental interactions.

The different forms of energy. Primary and secondary Energy. Efficiencies.

Resource depletions. The peak oil discoveries.

The French and worldwide context.

The climatic consequences. The mechanism of the greenhouse effect.

CO2 emissions and international agreements.

2.Renewable energy

Different solutions: hydro power, wind power, solar, biomass and others.

Comparison of different type of primary energy in the production of electricity.

Hydrogen as energy vector for the future. The general problem of transport.

The technical, environmental and economic issues.

The recent improvement for the use of fossil fuels.

CO2 storage and other research topics.

3. Nuclear Energy

Principle of current reactors. The future generation 4.

The fuel cycle and resource depletion.

Problems and solution of waste storage.

The prospects of fusion for the production of electricity

The Tchernobyl, Fukushima and Three Mile Island accidents.

**Credits ECTS :** 5

#### CoursPHY657 - Building and Using Models for the Energy Transition (2020-2021)

Models are everywhere, and especially when it comes to the energy and climate transitions. They provide a rationale for decision making, and constitute the standard way to test and improve our understanding. Yet, what a “model” is can be very different from one actor to another. Furthermore, models should be used with methodological care: any model is developed to address specific questions, in a specific validity range, with specific assumptions. However, while the output and conclusions of the models are often readily used and debated, the methodology and the validity of hypothesis and results are not often enough closely scrutinized.

As scientists involved in the energy and climate transitions, you will have to deal with many different models – whether you developed them yourselves or simply use their results. The aim of this course is to provide you with a critical methodology based on a physicist’s toolbox to help you use these models as wisely as possible.

As a note of caution : this is not a course in applied mathematics : efficient programming is important, as is a careful choice of algorithms, but this comes after the general framework is chosen and the direction set. Nor is it a course on big data analysis. An efficient algorithm can produce irrelevant or wrong data, and using up to date data analysis tool will not help to produce sensible conclusions.

The first lectures will introduce basic concepts of modelling (modeling vs simulation, prediction vs prospection…) as well as a set of physics methods relevant to the field (perturbative approach, scaling laws...). Following lectures will be presented by experts in the transition sector who will share their own experience of modelling. Students will select a case study they will investigate throughout the course, building their own model to compare and test against the existing literature*.*