Postdoctoral Fellowship in Instrumentation of

Il y a 5 mois


Gardanne, France Institut Mines-Télécom Temps plein

**Flexible Electronics Department Provence Microelectronics Center**

**Postdoctoral fellowship in instrumentation of organic bioelectronic devices**

Mines Saint-Etienne is a graduate engineering school of the Institut Mines-Télécom (IMT), the leading public group of engineering and management schools in France. IMT is an EPSCP (large establishment) under the supervision of the Ministry of the Economy, Finance and Industrial and Digital Sovereignty. The École Nationale Supérieure des Mines de Saint-Étienne (Mines Saint-Etienne) is responsible for training, research and innovation, transfer to industry and scientific, technical and industrial culture.

Mines Saint-Etienne represents: 2,400 engineering students and researchers in training, 480 staff (150 researchers and teacher-researchers), a consolidated budget of €46 million, 3 campuses dedicated to industry in Saint-Etienne and Lyon (region AURA), to microelectronics and connected objects in Gardanne (Aix-Marseille Provence area, region PACA) and to engineering for health in Saint-Etienne; 6 research units; 5 training and research centers; a leading technical and industrial scientific culture center in France “La Rotonde” (> 50,000 visitors / year).

**Scientific Context and Objectives**

Ultra-flexible, conformable and implantable organic electronic devices incorporating artificial intelligence promise to revolutionize real-time monitoring and treatment of chronic diseases. Such devices could be based on organic electrochemical transistors (OECTs) exploiting mixed ion-electron polymer conductors (PMIECs) as active layers. Indeed, PMIECs have emerged as an excellent hardware platform for interfacing biology with conventional electronics; identified as the “organic or plastic bioelectronics” field. The organic electrochemical transistor (OECTs) is considered one of the key elements to make such transduction. Its efficiency is evaluated through few Figures of Merit (FoM): i) transconductance (gm), ii) switching times (ionic vs. electronic), iii) in situ imaging of the dedoping propagation front ( for example, measurement of ionic mobility), iv) the electrochemical impedance to establish the equivalent electrical circuit and extract the capacitance. The control of hierarchical self

Our current understanding shows that the swelling (or ionic penetration) properties of these (macro)molecular PMIECs are essential to properly drive OECTs. Indeed, the swelling of the rich hydrophilic (hence ionic) phases allows the ions to penetrate and move in the vicinity of the rich hydrophobic p-conjugated phases, modulating their doping states and therefore the quantity of electronic current circulating in the OECTs channel. Therefore, the total surface area exchanged between ionic and p-conjugated phases and their self-organization play a central role since such transduction takes place throughout the volume of the channel layer of an OECT.

**Missions**

In such a scientific context, the postdoctoral fellow (PDF) will develop new instrumentation which will make it possible to record the ion mobility of the PMIEC by analyzing the frontal (de)doping mechanisms. In particular, as a first objective, the PDF will develop computer control, driving and synchronization (Python programming environment) of several spectroscopic, optoelectronic and electrical equipment to automatically extract key physicochemical parameters from PMIECs. By combining spectroscopic data between the project partners, these investigations will contribute to establishing the engineering rules and optimal structure-property relationships of PMIECs which will optimize the transduction operation of OECTs. Last but not least, the PDF will fabricate his/her devices, but will benefit from technical support for the manufacturing of the OECTs in clean room. He/she will monitor and analyze key FoMs using the developed instrumentation and electrical and electrochemical characterizations. Finally, a final objective of the post-doctoral fellowship will consist of creating neuromorphic circuits based on OECTs, as the first building block of organic electronics artificial intelligence.

**Applicant profile**:

- previous experience in the driving/ development of instruments to analyze (opto)(bio)electronic devices,
- skills for interdisciplinary work and multidisciplinary collaborations,
- autonomy, initiative,
- excellent communication and writing skills in English.

**_Hiring Conditions_**:
Post-doctoral contract in public law.

Salary fees according to the rules defined by the Institut Mines Télécom.

**The missions will be carried out on the Provence Microelectronics Campus in Gardanne (13) in Mines Saint-Etienne.**

**The PDF duration is 12 months-long (possible extension + 6 months)**

**Desired starting date: as soon as possible**

**Benefits**:

- 49 days of annual leave (leave + RTT) for a full-time executive package,
- Public transport costs covered up to 75%,
- Sustainable mobility package



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