PhD position in Thin Film Energy Materials. Early stage researcher

Updated: about 2 months ago
Job Type: FullTime
Deadline: 30 Jun 2024

3 Jun 2024
Job Information
Organisation/Company

Tallinn University of Technology
Department

School of Engineering, Department of Materials and Environmental Technology
Research Field

Chemistry
Technology » Materials technology
Physics
Researcher Profile

First Stage Researcher (R1)
Country

Estonia
Application Deadline

30 Jun 2024 - 23:59 (Europe/Tallinn)
Type of Contract

Temporary
Job Status

Full-time
Hours Per Week

40
Offer Starting Date

1 Sep 2024
Is the job funded through the EU Research Framework Programme?

Not funded by an EU programme
Is the Job related to staff position within a Research Infrastructure?

No

Offer Description

Tallinn University of Technology School of Engineering, Department of Materials and Environmental Technology offers a 4-year PhD position in Chemical, materials and energy technology.

The proposed PhD thesis topic: "Development of binary and ternary Sb-chalcogenide based thin film solar cells for BIPV and IPV applications"

Supervisors: Tenured Full Professor Ilona Oja Acik and Tenured Full Professor Malle Krunks (TalTech)

Abstract
The ambition of the Laboratory for Thin Film Energy Materials at TalTech is to create and provide the next generation of thin film photovoltaic technology capable of powering IPV/IoT devices and adaptable for integration in solar windows and related BIPV products. This PhD research topic explores the effect of Ag concentration in the precursor solution, from the doping side (Ag-Sb2S3) to the ternary compound (AgSbS2) formation, to the formed thin film properties. Sb2S3 is an emerging inorganic PV material that have drawn much interest in recent years due to its excellent stability, suitable bandgap (Eg=1.7 eV), relatively high absorption coefficient (ca104 cm-1 at 450 nm), earth abundance, environmentally benign characteristics and low-cost. Due to its unique properties Sb2S3 could be applied in semi-transparent, tandem, and indoor solar cells. This research topic foresees characterisation of material and device properties at TalTech and at research group collaboration partners (e.g., Liverpool University, or Czech Technical University or University of Verona or Helmholtz Centrum Berlin). We offer an opportunity to be part of the COST action CA21148 - Research and International Networking on Emerging Inorganic Chalcogenides for Photovoltaics, RENEW-PV, https://renewpv.eu/

Description
We have established baseline technology platform based on Sb-chalcogenide thin film solar cell fabrication by ultrasonic spray pyrolysis (USP) technology and were the first to demonstrate semi-transparent Sb2S3 solar cell fabricated by USP. In the current stage of the development, Sb2S3 thin film solar cells show efficiency of ca 7.5 % under 1 Sun. The average visible transparency of the structure glass/TCO/TiO2 /Sb2S3/HTM is 32% fulfilling the semitransparency requirement of solar windows. The key for further increasing the efficiency of the solar cells relays on optimization of the optoelectronic properties of Sb2S3 absorber layer.
In the frame of this research topic, we will explore the effect of Ag concentration in the precursor solution, from the doping side to the ternary compound formation, to the formed Sb-chalcogenide binary and ternary thin film properties. In this PhD thesis, antimony chalcogenide and metal oxide thin films will be fabricated by robust, resource saving, and easily scalable method such as ultrasonic spray pyrolysis. Spray deposition has great potential to become front- line technology for rapid, cost-effective, large-area and high yield mass production of solar cell.
The project will involve identification of suitable precursors for USP deposition, synthesis of precursors for Ag- doped Sb2S3 and AgSbS2 this film fabrication, fabrication of thin films and solar cells, characterization of materials and devices.

Responsibilities and (foreseen) tasks

  • Identification of suitable USP precursors, incl. component complexation, solubility, and thermal decomposition profile by means of TG/DTG/DTA methods.
  • Developing the fabrication protocol and engineering the device quality properties of Ag-Sb2S3 and AgSbS2 thin films deposited by chemical spray pyrolysis method.
  • Development and optimization of solar cells and its constituent layers (absorber layer, electron transport layer, hole transport layer) by chemical deposition methods.
  • Characterisation of material and device properties at home institution and at research group collaboration partners (COST action CA21148, RENEW-PV partners)
  • Analysis of the research data, preparing reports, oral and/or poster presentations at conferences, publishing research articles.

Requirements
Research Field
Chemistry
Education Level
Master Degree or equivalent

Research Field
Technology » Materials technology
Education Level
Master Degree or equivalent

Research Field
Physics
Education Level
Master Degree or equivalent

Skills/Qualifications

Applicants should fulfil the following requirements:

  • The successful applicant will hold a master’s degree in Chemistry, Materials Science, Physics or a related field.
  • Previous research experience in thin film technologies and material characterization will be an advantage.
  • Excellent team working attitude and communication skills in English (both written and oral) are an essential requirement.
  • Competences in using data analysis and graphing software: Microsoft Office (Word, Excel and PowerPoint), Origin.

Specific Requirements

The information for the PhD admission is available at TalTech´s web-page: https://taltech.ee/en/phd-admission

Required application documents:

  • CV
  • Motivation letter
  • Degree certificates as required by the university
  • Copy of the passport

 The candidate should submit a research plan for the topic, describing the understanding of the current state of the art of Sb2S3 thin films and solar cells development and propose the research activities plan for the Ag-doping of Sb2S3 and AgSb2S3 ternary compound development.


Languages
ENGLISH
Level
Excellent

Additional Information
Benefits

We offer:

  • 4-year PhD position in one of the most internationalized and leading PV research groups in Estonia
  • The chance to do high-level research in one of the most booming emerging photovoltaic field.
  • Opportunities for conference visits, research stays and networking with globally leading universities and research centres in the fields of material science.
  • Opportunity to be part of the COST action CA21148 - Research and International Networking on Emerging Inorganic Chalcogenides for Photovoltaics, RENEW-PV, https://renewpv.eu/

Additional comments

About the research group

The main research topic of the Laboratory for Thin Film Energy Materials is the development of metal oxide and sulphide thin films and nanostructured materials for solar cells, electronics and environmental applications by chemical technologies such as spray pyrolysis, chemical bath deposition and sol-gel. The technologies that are developed in the laboratory are simple, inexpensive, and easily transferrable to industrial scale. A new type of ultra-thin absorber based solar cell design and its component layers were developed in the laboratory and secured by several international patents. Over the last 25 years the main topics in the research group has been development of emerging thin film photovoltaic materials such as CuInS2, Sb2S3, Sb2Se3, Sb2(S,Se)3 and Sb-Bi alloys, and the fabrication of solar cells based on them. The research group has extensive knowledge on development of CdTe thin film solar cells by close spaced sublimation. The laboratory staff is coordinating or being involved in several international and national research projects and are the grant holders of the COST action project RENEW-PV. RENEW-PV is a joint network of more than 200 researchers and industry partners from more than 30 countries worldwide developing emerging inorganic PV materials and devices.

For further information, please contact Prof Ilona Oja Acik [email protected] , Prof Malle Krunks [email protected] or visit https://taltech.ee/en/laboratory-thin-film-energy-materials


Website for additional job details

https://taltech.ee/en/phd-admission
https://taltech.glowbase.com/positions/773

Work Location(s)
Number of offers available
1
Company/Institute
Tallinn University of Technology
Country
Estonia
City
Tallinn
Postal Code
19086
Street
Ehitajate tee 5
Geofield


Where to apply
Website

https://taltech.glowbase.com/

Contact
City

Tallinn
Website

https://taltech.ee/en/phd-admission
Street

Ehitajate tee 5
Postal Code

19086
E-Mail

[email protected]
[email protected]

STATUS: EXPIRED

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