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Blue-emitting perovskites hold great promise for next generation light-emitting technologies, but they face significant challenges in achieving electroluminescence (EL) performance and high external quantum efficiency (EQE) comparable to their red and green counterparts. Addressing issues such as deep trap states, phase segregation, Joule heating, and broader emission spectra is critical to developing blue PeLEDs that meet the Rec. 2020 standards for high-color-purity displays, enabling their practical implementation and commercialization. Blue emitting perovskites based on 2D Ruddlesden–Popper (RP) perovskites are promising materials offering advantages such as facile and low-cost solution processability, and low formation threshold, which provides the material with high photoluminescence quantum yield (PL QY), PL emission band at pure blue range (~465 nm), narrow emission bandwidth, and strong exciton binding energy, which are potential for the next generation blue LED device technology. This project seeks to advance the field by offering innovative strategies for designing high performance optoelectronic devices, addressing critical challenges in material efficiency and durability.

The successful candidate will work on:

• Tailoring spacer cations to control van der Waals interactions, quantum well structures, and perovskite phase stability
• Materials characterizations studying using XRD, optical spectroscopy, and electron microscopy of thin film and nanocrystals
• Developing strategies to mitigate Joule heating and non-radiative losses for enhanced EQE and operational stability of blue-LED devices
• Experience in perovskite materials, thin-film fabrication, and LED device characterization

Primary responsibilities are as follow:

• Designing, planning, and carrying out experimental work described in project;
• Scientific initiative and contribution through regular reporting and publishing, as well as presenting at group meetings, national and international conferences;
• Providing supervision to junior members of the group; Contribution to the efficient functioning of the lab, including necessary organizational tasks.

We offer a post-doctoral position (full-time employment) in the Institute of Physical Chemistry PAS with a gross salary of Around 9600 PLN gross
per month financed from the NCN SONATA 20 Project no 2024/55/D/ST5/02865 Entitled “Pure Blue-Emitting Perovskites: Structural Analysis and Optimization for LED Applications”
100% of the work time of Postdoc will be devoted to the realization of the proposed project. The offer is for 36 months.

The selected candidate will gain valuable new knowledge and techniques to enhance their skill set. This project encompasses chemistry, device engineering, and materials science, offering a learning opportunity for individuals from diverse backgrounds. We intend to publish the findings in prestigious high-impact journals.
The successful candidate will be eligible for all programs at the IPC PAS, including the IPC PAS Young Scientists competition and the IPC PAS Young Scientists Mobility competition.
Institute provides an opportunity to participate in ERASMUS+ programme.

1. PhD degree in chemical, physical or materials engineering, obtained no earlier than 12 years before the starting year of the employment in the project (this period might be longer due to family reasons (according to NCN rules).
2. Publication record and rich scientific experience.
3. Ability to work independently as well as in a group.
4. Experience in the electrooptical analysis (e.g., electroluminescence) of metal halide perovskite
5. Good experimental skills in the fabrication processes and understanding of charge transfer mechanisms in perovskite based light emitting devices.
6. Ability to communicate fluently in English (written and spoken).
7. Strong motivation to work and pursue scientific questions, creativity, and analytical thinking.

The Commission will consider the following criteria:
a) competencies of candidates for specific tasks in a research project (max. 60 points),
b) previous scientific achievements of candidates (max. 30 points),
c) awards and distinctions of the candidate resulting from the conducted research (max. 10 points).
The commission evaluates applications on a point scale (max. 100 points).