Maksym Kovalenko

Designer Sulfonium-Based Capping Ligands for Lead Halide Perovskite Nanocrystals The ongoing quest for improved capping ligands for lead halide perovskite nanocrystals (LHP NCs) is fueled by the immense potential of these emitters as classical and quantum light sources. Herein, we...

We continue exploring novel ligands for perovskite nanocrystals. Almost done with cationic ones...

pubs.acs.org/doi/10.1021/...

Bright Monocompound Metal Halide Scintillator for Fast Neutron Radiography Metal halide scintillator, tetraphenylphosphonium manganese bromide (TPP2MnBr4), provides a significant benefit for fast neutron imaging. A fourfold increase in efficiency over traditional zinc sulfi...

In a sandbox filled with luminescent metal halides, creativity never dims.
advanced.onlinelibrary.wiley.com/doi/10.1002/...

Coherent Multi-Dimensional Spectroscopy Reveals Homogeneous Lineshape Dynamics in CsPbBr3 Quantum Dots Lead halide perovskite (LHP) quantum dots (QD) are an attractive material for light emissive applications due to their lattice, which is both dynamically disordered and defect tolerant. The developmen...

pubs.acs.org/doi/full/10....

Stable, Room-Temperature, Low-Threshold Amplified Spontaneous Emission from Thermally Evaporated Cesium Lead Halide Perovskites Semiconductor nanocrystals are widely investigated as tunable quantum emitters due to their composition-, size- and shape-dependent optical properties, and they find applications in various optoelectr...

Stable, Room-Temperature, Low-Threshold Amplified Spontaneous Emission from Thermally Evaporated Cesium Lead Halide Perovskites | ACS Nano

pubs.acs.org/doi/10.1021/...

On the Feasibility of Pairing Pyrochlore Iron(III) Hydroxy Fluoride Cathode with Argyrodite Li6PS5Cl Solid‐State Electrolyte for Low‐Cost All‐Solid‐State Batteries
chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/...

Assistant Professor (Tenure Track) of Inorganic Chemistry

ethz.ch/en/the-eth-z...

Only 10 days left!
⏰ @ all supervisors of PhD students in Switzerland. Please see below. And please spread the word.

Our squad of Invited speakers at ICMAT 2025.

Very rarely do materials check all the boxes for a competitive and practical utility as a commercial cathode material for Li-ion batteries. Li-Fe-halides offer this promise, particularly (and uniquely) for all-solid-state batteries. Our recent contribution:
chemrxiv.org/engage/chemr...

Don't miss - already this Monday! Learn about the legacy of the renowned Ukrainian microbiologist - Serhiy Winogradsky (born 1856 in Ukraine, died 1953 in France).
Among other places, he made major discoveries at ETH Zürich. His life for a period was split between Switzerland and Ukraine.

Standardizing XPS and HAXPES Analyses of LLZO Solid-State Electrolytes and Their Reactive Compounds Surface contamination of Li7La3Zr2O12 (LLZO) is a significant challenge that impedes its use as a nonflammable and nontoxic solid-state electrolyte in high energy density, temperature-tolerant Li meta...

A wonderful and fruitful collaboration with Lars Jurgens at Empa.

Standardizing XPS and HAXPES Analyses of LLZO Solid-State Electrolytes and Their Reactive Compounds | ACS Materials Au pubs.acs.org/doi/10.1021/...

Our ETHZ-Empa group,
Summer edition 2025

Light detectors made from perovskite crystals see in full colour Most pixels in cameras detect only red, green or blue light. A sensor made from perovskite materials absorbs all three, improving image brightness and resolution.

Most pixels in cameras detect only red, green or blue light. A sensor made from perovskite materials absorbs all three, improving image brightness and resolution

https://go.nature.com/3T1oKcd

QS rankings: ETH Zurich secures 7th place once again According to the recently published QS World University Rankings 2026, ETH Zurich ranks among the world’s ten best universities once again this year. It took the top spot in continental Europe, with o...

ETH Zurich ranks 7th globally in the QS World University Rankings 2026 — and #1 in continental Europe. With global research impact and a top-2 spot in hashtag#Sustainability, we’re proud to keep driving #Science and #Education forward.

Read more:

About our work

Light detectors made from perovskite crystals see in full colour Most pixels in cameras detect only red, green or blue light. A sensor made from perovskite materials absorbs all three, improving image brightness and resolution.

News article about our work by Shuming Nie and Viktor Gruev, huge thanks to them!
www.nature.com/articles/d41...
Our work:
www.nature.com/articles/s41...

Vertically stacked monolithic perovskite colour photodetectors - Nature A colour sensor array based on multilayer monolithically stacked lead halide perovskite thin-film photodetectors achieves higher quantum efficiency and superior colour accuracy compared to conventiona...

Research into full color imaging with perovskites as thin-film absorbing semiconductors lags other applications of halide perovskites.
We hope our work will motivate broader efforts in this arena; also well beyond three-color imaging.
www.nature.com/articles/s41...

Don't miss your best conference in 2025: "Emerging Light Emitting Materials"!

www.nanoge.org/EMLEM25/home

Early registration deadline: 25th June 2025
Abstracts submission deadline (oral): 25th June 2025
Abstracts submission deadline (poster): 8th September 2025

Good news:
the poster submission deadline has just been extended to 2 June! 📆
Feel free to share. And see you on 25 June in Fribourg!
mat25.scg.ch/registration

📢PhD Award Alert! 🏆
Dear PhD advisors: did your student(s) recently (Jan 2024 - May 2025) defend their thesis in Switzerland in #materials #chemistry ? Then please consider nominating them for our SCS MatChem PhD Student Award, by 15 July: scg.ch/scg-news/new...
@swisschemistry.bsky.social

This week, 40 high-school students visited our #KovalenkoLab during the #DayOfOpenLabs (TOL) of the Department of Chemistry and Applied Bioscience at @ethz.ch. Lots of #chemistry fun with #nano #torches (bright #perovskite #nanocrystals) and for many a first glimpse into university life.

Single-photon superabsorption in CsPbBr3 perovskite quantum dots - Nature Photonics Greatly enhanced light absorption is reported in large perovskite quantum dots by realizing a transition with a giant oscillator strength at the optical bandgap.

Our team has again demonstrated the uniqueness of perovskite QDs, now in the absorption of light (echoing the previously reported single-photon superradiance).
www.nature.com/articles/s41...

We critically discuss the Li/LLZO architecture, also through the lens of our own extensive experience.

pubs.acs.org/doi/10.1021/...

Assistant Professor (Tenure Track) of Inorganic Chemistry

For the attention of the broad research community of inorganic chemists: our department is hiring for a tenure-track position in inorganic chemistry. Application deadline: August 31, 2025.
ethz.ch/en/the-eth-z...

A Decade of Lead Halide Perovskites for Direct‐Conversion X‐ray and Gamma Detection: Technology Readiness Level and Challenges This review summarizes the first decade of research on lead halide perovskite (LHP)-based X-ray and gamma-ray radiation detectors, emphasizing their exceptional detection properties, advances in synt...

Our team was among the first to begin testing perovskites as direct X-ray and gamma detectors more than a decade ago. Their uniqueness lies in low-cost and facile integration, high radiation stopping power, and semiconductor-grade electronic quality.

advanced.onlinelibrary.wiley.com/doi/10.1002/...

Temperature-Dependent 207Pb Nuclear Magnetic Resonance Spectroscopy: A Spectroscopic Probe for the Local Electronic Structure of Lead Halide Perovskites Lead halide perovskites (LHPs) have garnered considerable interest, owing to their advantageous optoelectronic properties and ease of synthesis. However, understanding their intricate structure–proper...

There is always much more to to solid state NMR of materials than we thought before, also for lead halide peorvskites
pubs.acs.org/doi/10.1021/...

It was an honor to visit UW (Clean Energy Institute) in Seattle (and this city). Beautiful campus. Wonderful colleagues.
Thanks for hospitality to: Eden , @velian-lab.bsky.social , Daniel Gamelin, @brandicossairt.bsky.social @gingerchem.bsky.social and their students, @uw-cei.bsky.social

Thanks for coming @maksymuki.bsky.social!

This week's CEI seminar will be presented by Dr. Maksym Kovalenko from ETH Zurich! @maksymuki.bsky.social @ethzurich.bsky.social 🇺🇦🇨🇭

"My quantum dot journey: from water to infrared, and finally to luminescent salts" 🧪💡

Thurs Apr 10, 4:00 pm @ NanoES 181
@gingerchem.bsky.social @imod-stc.bsky.social

Coherent Multidimensional Spectroscopy Reveals Hot Exciton Cooling Landscapes in CsPbBr3 Quantum Dots Hot exciton relaxation dynamics is one of the main processes in quantum dots (QD), conferring their functions in optoelectronic devices spanning photovoltaics and solar fuel generation to light emitting diodes, lasers, and quantum light sources. The challenge has been to monitor energy relaxation dynamics in parallel with resolution of excitation or excess energy. Here, we exploit the unique capacity of Coherent Multi-Dimensional Spectroscopy (CMDS) to provide the first observation of the hot exciton cooling landscape of a large size range of CsPbBr3 lead halide perovskite QD, notable for their impact on optoelectronic devices, as well as their strong and unique exciton-lattice coupling. The CMDS data reveal that the hot exciton relaxation landscape is a complex function of the energy. Ab initio quantum dynamics simulations rationalize the observed behavior through energy dependent nonadiabatic exciton–phonon coupling. This first observation of cooling landscapes in QD suggests that materials science that either accelerates or slows hot exciton cooling can better be understood as a landscape to optimize for applications.

pubs.acs.org/doi/full/10....