31/03/2021

Looking for a PhD Student

This job offer has expired


  • ORGANISATION/COMPANY
    CY Cergy Paris Université
  • RESEARCH FIELD
    ChemistryMolecular chemistry
    ChemistryOrganic chemistry
    ChemistryPhysical chemistry
    ChemistrySolar chemistry
  • RESEARCHER PROFILE
    First Stage Researcher (R1)
  • APPLICATION DEADLINE
    28/05/2021 00:00 - Europe/Athens
  • LOCATION
    France › Neuville-sur-Oise
    United States › California
  • TYPE OF CONTRACT
    To be defined
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    40
  • OFFER STARTING DATE
    01/10/2021

OFFER DESCRIPTION

PhD Thesis title: Molecular Engineering of Electron Accepting and Transporting molecules for Organic and Hybrid Solar Cells

Assignment: This PhD thesis will be in co-direction between the LPPI/CY Cergy Paris Université (50%) and the CPOS/University of California, Santa Barbara (50%). The PhD student will enroll at the SI Doctoral School of CY Cergy Paris Université and will be awarded the PhD degree of the CY Cergy Paris Université.

Funding: The funding has been acquired. During the 18 months in Paris she/he will be paid by CY Cergy Paris Université and during the 18 months in USA she/he will be paid by CPOS/ University of California, Santa Barbara

Starting date: October – December 2021

Team description

  • Host laboratory 1/Supervisor 1: Thanh-Tuân BUI, Maître de Conférences, Laboratoire de Physicochimie des Polymères et des Interfaces (LPPI), CY Cergy Paris Université, Cergy, France. Tel: +33 1 34 25 70 11. E-mail: tbui@cyu.fr. LPPI website Personal Site
  • Host laboratory 2/Supervisor 2: Thuc-Quyen Nguyen, Professor of Chemistry and Biochemistry and Director of the Center for Polymers and Organic Solids (CPOS), University of California, Santa Barbara, CALIFORNIA, USA. CPOS website Nguyen’s Research Lab

In France, the candidate will integrate to an international team with strong internal research collaboration and interaction at the LPPI of the CY Cergy Paris Université under the authority of Dr. Thanh-Tuân Bui (thesis supervisor). In Santa Barbara, he/she will be a member of Prof. Thuc-Quyen Nguyen’s research group at CPOS. He/She will be under the supervision of Prof Thuc-Quyen Nguyen (thesis co-supervisor).

Context and motivation

In the last five years, the rise of organic solar cells (OPVs) is one of the most impressive evolutions in the history of photovoltaic technologies. The power conversion efficiencies (PCE) of this emerging technology is higher than 18 % for single junction devices. Thus, it is apparent that OPVs, alongside with perovskite-based solar cells (PSCs), is a promising next generation PV technology. The triumph of OPVs and PSC lies in unlimited possibility to design excellent light absorption and long charge-carrier diffusion length of organic and hybrid materials. Importantly, these solar cells are prepared by soft techniques using solution processing. Therefore, the cost-effective large-scale production is realizable. In this context, production cost, device performance and stability, leading to durability and long product’s life, are considered as the key performance parameters. Among different solutions at this respect, our interest is oriented toward designing and tailoring new organic electron accepting and transporting materials (ETM). In particularly, we are interested in non-fullerene electron acceptors. The active layer of BHJ OPV devices are composed of electron donating and accepting organic semiconductors. Whilst a significant palette of molecular and polymeric electron donating materials has been developed over three decades, until recently only a small number of electron acceptors have proven capable of delivering high PCE. In particular the fullerenes derivatives have longtime dominated the field. In this perspective, the emergence of an alternative and performant non-fullerene accepting materials (NFAs) is highly desired. There is no doubt that the non-fullerene electron accepting materials will propel organic photovoltaic technology to the efficiencies necessary for a viable commercial technology. However, there are some drawbacks with the current high performance NFAs such as instability and that will be the focus of our project.

This ambitious project needs a multidisciplinary approach. As such it will encompass approaches ranging from molecular designing, synthesis, characterization of pristine compounds, and test of the new materials in OPV devices.

In France, the candidate will perform the design and synthesis of electron accepting molecules, molecular characterizations in solution and solid state (thermal, electrochemical, optical, AFM, SEM, RAMAN, SEM + Raman, confocal laser scanning microscopy, etc.). It is also possible to make basic OPV device fabrication and testing.

In USA, she/he will perform advanced film morphology and Charge transport measurements, elaborate and characterize OPV devices and investigate device physics

Desired profile

The candidate should have a Master degree (by the end of 2021) in organic chemistry, polymers, or material sciences. He/she will have to show a real interest in working on a multidisciplinary subject in an international context (18 months in France and 18 months in USA). A solid knowledge of organic chemistry and pi-conjugated materials are expected and experiences in organic electronics or organic semiconductors should be a strong asset. The candidate must be autonomous in a chemistry laboratory and interested in the renewable energy field, especially organic and hybrid photovoltaics. Due to the bilateral context, strong English oral and written communication skills are expected with both teams to ensure the continuity of the project. Some knowledges of French is a plus, but not mandatory.

Special Constraints related to the position: Regarding the international and bilateral context of this project, the student will need to speak, write and discuss in English. Scientific stays in both countries are mandatory for the project.

Recruitment process: Step 1: interview with Dr. Bui for the selection of shortlisted applications. Step 2: shortlisted candidates are interviewed by Dr. Bui and Prof. Nguyen for final selection

Application deadline: 28 May 2021 (the applications will be reviewed ASAP shortly after received)

How to apply: Applications (detailed CV with the contact information of 2 references+ letter of motivation+ Undergraduate and Master marks) must be sent to Thanh-Tuan Bui (tbui@cyu.fr). Please join also English proficiency certificate when applicable

Contact for the questions related to the position: Thanh-Tuan BUI. Tel: +33 1 34 25 70 11. Email: tbui@cyu.fr

Related recent publications of the LPPI-CYU team: Adv. Mater. 2021. 33, 2007431. Energies 2020, 13, 2897. Polym. Chem. 2020, 11, 7221-7234. Polym. Chem. 2020, 11, 3349-3359. J. Mater. Sci. 2020, 55, 4820. Org. Electron. 2018, 60, 22. Chem. Asian J. 2018, 13, 1302-1311

Related recent publication of the CPOS-USCB team: Adv. Funct. Mater. 2021. DOI: 10.1002/adfm.202009363. Adv. Energy Mater. 2021, 11, 2003091. Adv. Opt. Mater. 2021, 9, 2001484. Adv. Energy Mater. 2021, 11, 2002760. Energy Environ. Sci. 2020, 13, 3679-3692. Adv. Energy Mater. 2021. DOI: 10.1002/aenm.202003441. ACS Nano 2021, 15, 1753–1763

 

More Information

Selection process

Recruitment process: Step 1: interview with Dr. Bui for the selection of shortlisted applications. Step 2: shortlisted candidates are interviewed by Dr. Bui and Prof. Nguyen for final selection

Offer Requirements

  • REQUIRED EDUCATION LEVEL
    Chemistry: Master Degree or equivalent
  • REQUIRED LANGUAGES
    ENGLISH: Excellent

Skills/Qualifications

The candidate should have a Master degree (by the end of 2021) in organic chemistry, polymers, or material sciences. He/she will have to show a real interest in working on a multidisciplinary subject in an international context (18 months in France and 18 months in USA). A solid knowledge of organic chemistry and pi-conjugated materials are expected and experiences in organic electronics or organic semiconductors should be a strong asset. The candidate must be autonomous in a chemistry laboratory and interested in the renewable energy field, especially organic and hybrid photovoltaics. Due to the bilateral context, strong English oral and written communication skills are expected with both teams to ensure the continuity of the project. Some knowledges of French is a plus, but not mandatory.

 

Specific Requirements

Special Constraints related to the position: Regarding the international and bilateral context of this project, the student will need to speak, write and discuss in English. Scientific stays in both countries are mandatory for the project.

Work location(s)
1 position(s) available at
LPPI CY Cergy Paris Université
France
Neuville-sur-Oise
95000
1 position(s) available at
University of California, Santa Barbara
United States
California

EURAXESS offer ID: 621873

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