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
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
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
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
A Swiss Excellence postdoctoral scholar has joined the group and will work to understand how chirality affects spin in singlet fission.
A SNSF Postdoctoral Fellow has joined the group and will be working on chiral plasmonic materials.
A perspective article on the impact of chirality on singlet fission and triplet fusion was published in ACS Energy Letters, one of the leading energy journals.
Our labs hosted three high school students who learned how to make nanocrystals and experienced a working lab during the Swiss Study Week in Materials Science & Chemistry, organized in collaboration with Schweizer Jugend Forscht.
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.
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
Laboratory for Functional Inorganic Materials (LFIM)
Prof. Wendy Queen
Laboratory for Functional Inorganic Materials (LFIM)
LFIM pioneers advanced porous materials for gas and liquid separations—specializing in CO₂ capture, water purification, and recovery of valuable metals from waste—to reduce global energy consumption and advance environmental stewardship.
Research topics
1
Carbon Capture: We will develop better ways to remove CO2 directly from the atmosphere e and from large point sources, with the aim of making the process cheaper and more effective to help reach carbon neutrality goals.
2
We create cost-effective and sustainable ways to extract valuable and critical metals like platinum, palladium, and gold from waste for its reuse, with the aim of helping ensuring secure material supply chains necessary for the energy transition while promoting environmental stewardship.
3
LFIM designs selective porous materials capable of removing targeted contaminants from water sources, with the aim of helping secure clean water access for all and aid environmental remediation.
Our key projects
NCCR Separations
This year we received funding to launch the NCCR Separations, a Swiss National Centre of Competence in Research dedicated to developing the next generation of separation technologies. By harnessing advanced materials and/or novel processes, we aim to tackle some of the world's most pressing challenges — from capturing CO₂ directly from the air to separating ammonia and recovering critical metals from waste streams.
We are developing porous materials able to capture CO2 directly from the air. The project will feature the design and implementation of a CO2 capture unit that will be installed at a local incineration facility in conjunction with ton scale carbon capture from the plant itself.
The group received an SNSF grant this year to develop piperazine- and dihydrophenazine-based building blocks for the design of highly efficient, cost-effective porous adsorbents targeting water treatment and heavy element recovery from complex waste streams.
In collaboration with our industry partner, we started a project to capture fluorinated molecules from gas mixtures. These persistent gases have very high global warming potential, and we aim to reduce their emissions using efficient, cost-effective porous adsorbents.
Scaling Adsorbents for Gold Recovery & Clean Water
Supported by a BRIDGE Proof of Concept Fellowship, our team member Dr. Nazanin Taheri aims to scale up efficient adsorbents for recovering gold and removing heavy metals from industrial wastewater and e-waste, advancing clean water and circular resource recovery.
Our postdoctoral researcher Dr. Nazanin Taheri was selected as a BRIDGE Proof of Concept Fellow, receiving CHF 130k to advance her innovative work. Her project was later selected among the Top 5 startups out of 50 at the Energy & Environment Innovation Day organized by STARTUP CAMPUS Switzerland. In 2026, she also received 2nd place at the Sustainability Week Zurich Startup Award for her work on gold recovery from e-waste and industrial streams, combined with heavy metal removal to support cleaner water and circular resource recovery.
2
Our former PhD student Dr. Till Schertenleib received the EDCH Doctoral Program Thesis Distinction, placing his thesis among the top 8% of 2025 submissions. He was also selected as one of the 2025 MatChem PhD Student Award winners, recognizing the outstanding contribution of his PhD thesis and highlighting his scientific excellence. Dr. Timo Felder was awarded the Outstanding Poster Award at EuroMOF 2025, highlighting the strong impact of his research within the porous materials community. In addition, one of his recent publications was selected for the 2025 Most Popular Porous Materials Articles Collection, highlighting the relevance and visibility of his research. Our PhD student Sanjay Venkatachalam received the Outstanding Poster Award at the Gordon Research Conference in the USA, recognizing the quality and impact of his research presentation.
3
The NCCR “Separations” brings together 20 research groups to accelerate technology transfer, support Swiss sustainability goals, and strengthen innovation. It aims to position Switzerland as a leader in sustainable separation science by strengthening national expertise and building lasting interdisciplinary collaborations.
4
A BRIDGE Proof of Concept Fellowship was secured to support Dr. Nazanin Taheri’s innovative adsorbent technology, paving the way toward a potential EPFL spin-off in the near future. In addition, one patent has been filed based on her innovative adsorbent materials and their application in resource recovery.
Team & talents
Lab team size
15
Introducing a specific team member
Dr. Nazanin Taheri joined LFIM in September 2022 as an organic chemist, applying her expertise to the design of efficient adsorbents for addressing environmental challenges. Over the past three years, under the supervision of Prof. Wendy Lee Queen and through strong teamwork with PhD students, she has developed efficient adsorbents for gold recovery from e-waste and industrial streams, and heavy metal removal from wastewater. Her work has led to outstanding scientific outputs, including a publication in Journal of the American Chemical Society, and has attracted CHF 130k in BRIDGE Proof of Concept funding to support the scale-up and translation of her technology toward real-world applications.
Skills developed by the scientific team
Our team members are developing the ability to translate fundamental scientific knowledge into practical solutions for pressing environmental challenges. Rather than pursuing research in isolation, they focus on technologies that combine scientific rigor with tangible environmental and economic impact.
A key skill is learning to bridge the gap between fundamental research and industry needs, from material design and characterization to application-driven testing, scale-up thinking, technology transfer, and collaboration with industrial partners. This prepares researchers to contribute to a more sustainable planet while advancing innovations with real-world relevance. In fact, while we actively explore scalable solutions for industry, we also maintain a strong focus on fundamental research. For example, our former PhD student Dr. Till Schertenleib carried out outstanding fundamental work that was recognized with the EDCH Doctoral Program Thesis Distinction and the 2025 MatChem PhD Student Award.
Regional and social impacts
1
We develop advanced porous materials to combat climate change through efficient CO₂ capture, purify water by removing toxic metals, and recover valuable metals from e-waste—enabling a circular economy while training future leaders and engaging society through research translation.
2
LFIM helps boost visibility of Valais as a world-class science hub, helps drive economic growth through the creation of startups and bringing in investments, trains future scientists globally, engages the public via GoldRush exhibitions and local media (Canal 9, Nouveliste, RTS, Migros displays), and strengthens regional partnerships for the energy transition through presentations to decision makers and working wiht local industry, and engaging with local schools
3
Our research tackles the industrial energy challenge head-on: separation processes consume 10-15% of global energy. We deliver economic impact through startup creation, patent development protecting novel materials and methods and tech transfer, and through direct industry collaborations in an effort to help bring cutting-edge separation technologies to market.
Perspectives and challenges
Priority 1
Provide new scientific knowledge that may help address exisitng global challenges related to climate change and water scarcity.
Priority 2
Scale our breakthrough materials from lab to industry—transforming CO₂ capture, e-waste recycling, and water purification from research innovations into deployed technologies.
Priority 3
Train the next generation of sustainability leaders while expanding public engagement to inspire action on climate and circular economy.
Main challenges
Bridging the gap between laboratory success and industrial-scale deployment. Making our energy-efficient technologies cost-competitive with existing methods. Securing pilot-scale funding to demonstrate real-world performance. Moving from promising prototypes to commercially viable products that industries will adopt. Developing necesary industrial partnerships
Future Partnerships
Our NCCR is aimed at adressing the above challenges and accelerate separation technology development to more rapidly meet industrial needs related to cost, energy consumption, and enviornmental sustainability. Within the context of this project we already have 8 academic partners and at least 15 supporting industrial partnerships which could be leveraged.
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