Laboratory for Energy Materials (LEM)

1
Sascha Feldmann Min

Prof. Dr. Sascha Feldmann

Laboratory for Energy Materials (LEM)

Chemistry, physics, materials science


Our mission

The Laboratory for Energy Materials employs advanced optical characterization techniques and materials chemistry to transform the way we produce and consume energy as a society. We work on uncovering the design rules to enable the next generation of cheap, efficient and flexible solar cells & ultra-bright displays, and unlock entirely new applications in quantum information technology.

Research topics

1

Cheap, flexible and highly energy-efficient solar cells

2

Efficient, flexible, ultra-bright displays and holography

3

Emerging qantum information technologies for ultra-efficient computing

Our key projects


1

Lead-Free Perovskites

Developing lead-free halide perovskites as sustainable, highly energy-efficient emerging semiconductors. These materials are printable from solution, cheap to manufacture and show enhanced electron spin lifetimes compared to their lead-counterparts.


EPFL Institute of Chemical Sciences and Engineering

2

Ultrasensitive Polarization Microscopy

Development of an ultrasensitive polarization microscope with unprecidented spatiotemporal and energy resolution at record polarization sensitivity, in collaboration with the leading microscopy and optics manufacturer Zeiss.


Carl Zeiss AG

3

Chiral Light–Matter Control

Understanding and controlling chiral light-matter interactions in molecular semiconductors for polarization-resolved organic optoelectronics.


EPFL Institute of Chemical Sciences and Engineering

Our results and highlights

1

Publication in the premier global research outlet: Nature. Celebrated as the most important journal globally across all scientific disciplines, our recent publication in Nature on a broadband sensitive polarization detection scheme highlights the importance of our work beyond just the immidiate research field we work in.

2

Sascha has won the Wiley Young Innovator Award and was named a C&EN Talented 12, two of the most competitive early-career research awards worldwide.

3

Sascha was awarded an ERC Starting Grant by the European Research Council – the most prestigious award in Europe. He also was awarded an international MAPS grant, an SNSF project funding grant, and a Swiss-Korean Quantum grant.

4

Two patents were filed regarding a) a new formulation for ultrabright QLED displays and b) an ultrasensitive polarization detection scheme.

5

Awards, IP, Grants, Publications, etc. see above

Team & talents

Lab team size

10 people, set to grow to about 15 next year

Introducing a specific team member

All are equally important

Skills developed by the scientific team

Project management, critical problem solving skills, advanced synthetic chemistry, coding, semiconductor fabrication, semiconductor characterization, advanced optical spectroscopy, device fabrication

Regional and social impacts

1

We enable energy production & consumption applications with unprecidented energy conversion efficiencies. All devices based on semiconductors in modern society would operate based on cheaper to manufacture materials, yet at higher efficiency.

2

Valais in particular is affected very strongly by the consequences of climate change. The outlook of sustainable renewable energy sources based on cheap yet efficient photovoltaics is of key interest for the future development of this canton.

3

Industry partners at large benefit from the IP we create regarding more energy efficient solar cells and ultra-bright display materials.

Perspectives and challenges

Priority 1

Lead-free halide perovskite semiconductor development with enhanced efficiency and stability

Priority 2

Commercialication of an ultrasensitive polarization microscope

Priority 3

Enabling achiral molecular materials to be imbued with chiral properties.

Main challenges

Stability issues in lead-free halide perovskite materials (high trap density) -polarization artifacts in optical components – absence of a mechanistic understanding of chirality induction mechanisms

Future Partnerships

Quantum information technology companies interested in novel material platforms for qubits – Solar cell companies interested in novel material platforms which are cheaper, flexible and more efficient than silicon -microscopy manufacturers interested in the highest possible polarization contrast

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