News & Highlights
From 2021 to 2025
NanoDisp 2.0 brings together leading experts in display materials and technologies
Our group attended the NanoDisp 2.0 conference held at HKUST in early December 2025, co-organized by Prof. Abhishek Srivastava, Prof. Jonathan Halpert, and Prof. Andrey Rogach. Great talks and discussions were held!
December 2025
Luminescent transparent wood as a new platform for optoelectronic applications
Our recent research paper in collaboration with the group of Prof. Edwin Tso entitled "Enhanced light utilization in transparent wood-based luminescent solar concentrators: Harnessing the effect of anisotropic scattering" is now online in Materials Today Energy. As we were diving into this new topic, we found that anisotropic light scattering within the wood matrix plays a crucial role in boosting the LSC performance.
December 2025
Prof. Andrey Rogach reveals the secrets of perovskite LEDs at iCanX Talks
Our group leader, Prof. Andrey Rogach, is spreading the word about state-of-the-art perovskite LEDs at iCanX Talks with his presentation entitled "Perovskite Nanostructures for Efficient Red, Green, Blue and Infrared Light-Emitting Devices". The talk was held on November 7, 2025.
November 2025
Congratulations to Dr. Vighnesh Kunnathodi for obtaining PhD
We are happy to announce another successful defense in our group—Dr. Vighnesh Kunnathodi now holds a PhD in Materials Science and Engineering. His thesis "Colloidal Nanoheterostructures Based on Cesium Lead Halide Perovskites: Synthesis, Structure, and Optical Properties" culminates 4 years of his hard and dedicated work. We wish you all the best in your future career!
October 2025
Dr. Kseniia Sergeeva successfully defends her PhD thesis
Congratulations to Dr. Kseniia Sergeeva for an outstanding defense of her PhD thesis entitled "Infrared Photodetectors Based on HgTe Colloidal Quantum Dots: the Effect of Surface Chemistry and Plasmonic Structure Coupling on Their Performance" and taking on the new role of Senior Research Assistant in our group.
August 2025
Workshop on "Nano, Optoelectronics, and Photonics"
Great talks by the Distinguished Visiting Professor of CityUHK Maksym Kovalenko (Professor at ETH Zurich), Dr. Maryna Bodnarchuk (Group Leader at EMPA) and colleagues from several Hong Kong universities. Thank you for this fruitful and curious event.
June 2025
Perovskite QDs go spiral & chiral
A new article "Helical Perovskite Nanowires with Strong Circularly Polarized Luminescence Self-Assembled from Red-Emitting CsPbI3 Quantum Dots Following Chiral Ligand Exchange" has been published in ACS Nano.
May 2025
Dr. Ye Wu becomes Associate Professor in Nanjing
Dr. Ye Wu who has been working as a postdoc in our group for the last 2 years successfully finishes his current research and moves to Nanjing to take up the Associate Professor position at the School of Materials Science & Engineering, Nanjing University of Posts and Telecommunications. We will miss you, and good luck in your future career!
March 2025
New approach boosts efficiency of perovskite light-emitting diodes
Our group has developed a novel method to produce FAPbBr3 perovskite films with an ultralow trap density of 1.2×1010 cm−3, significantly enhancing the performance of LEDs. This advancement resulted in green perovskite LEDs achieving a brightness of approximately 312,000 cd/m2, a half-lifetime of 350 hours, and a power conversion efficiency of 15.6%. Read more in our fresh Nature Comm. paper "Ultralow trap density FAPbBr3 perovskite films for efficient light-emitting diodes and amplified spontaneous emission".
March 2025
Discover the realm of heterostructured electrocatalysts
Our new review "Heterostructured Electrocatalysts: from Fundamental Microkinetic Model to Electron Configuration and Interfacial Reactive Microenvironment" published in Adv. Mater. delves deep into the mechanisms and challenges of using heterostructures for electrocatalytic applications.
March 2025
Dr. Bing Tang moves to Shanghai and takes Associate Professor position at SIOM, CAS
Our colleague, Dr. Bing Tang who has been working with us for about three years becomes an Associate Professor at the Advanced Laser and Optoelectronic Functional Materials Department of the Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS). Thank you for the job you've done in our group, and best of luck with your new academic journey!
December 2024
Partial ligand replacement on 2D Fe-MOFs improves their electrocatalytic activity
A new paper "High-Density Atomic Level Defect Engineering of 2D Fe-Based Metal-Organic Frameworks Boosts Oxygen and Hydrogen Evolution Reactions" has been published in Adv. Sci.
November 2024
Strong ligand-induced chirality in AgBiS2 nanocrystals
Research Article "Intense Circular Dichroism and Spin Selectivity in AgBiS2 Nanocrystals by Chiral Ligand Exchange" has been published in Adv. Mater.
October 2024
Happy graduation, Dr. Sile Hu!
We say congrats to our friend Sile Hu who has successfully defended her PhD thesis on "Chiral Hybrid Metal Perovskites for Direct Circularly Polarized Photodetectors" and moved on to a new postdoc position in the group of Prof. Edward H. Sargent. We wish you a great scientific career!
October 2024
A new long-awaited review on HgTe QDs
Our latest review paper "The Rise of HgTe Colloidal Quantum Dots for Infrared Optoelectronics" is finally out! This is a joint effort made with Emmanuel Lhuillier, Christophe Delerue, Philippe Guyot-Sionnest, Xin Tang, Sean Keuleyan, and Sandrine Ithurria groups. It also marks the culmination of our Steve Kershaw's efforts in this research field.
July 2024
Our friend, colleague, and mentor Dr. Steve Kershaw is retiring
Thank you, Steve, for all these years of hard work and unbelieveable amount of help to each and every one of us. We will miss you!❤️
June 2024
Alumni Frederik Hetsch back at CityU
Great talk about funding start-ups and bringing sustainable technologies in materials science into the market. Thank you, Frederik!
May 2024
Andrey Rogach with Sasha Efros at QD2024
The 12th International Conference on Quantum Dots (QD2024) held in Munich this March has brought together great scientists and inspired many fruitful talks.
March 2024
The 2023 Nobel Prize in Chemistry goes to colloidal QDs
This year's Nobel Prize in Chemistry has been awarded to the fathers of the QD industry. We are excited and inspired by this great news. Congratulations to everyone in our community!
October 2023
Prof. Rogach amongst the top CityU scientists
Prof. Rogach has received a prestigious Senior Research Fellowship established by the Research Grants Council (RGC) of Hong Kong SAR.
August 2023
Tin-based perovskites for aqueous batteries—a disruptive new application
Our story on "Conversion-Type Organic-Inorganic Tin-Based Perovskite Cathodes for Durable Aqueous Zinc-Iodine Batteries" has appeared in Adv. Energy Mater.
May 2023
Andrey Rogach joins the list of Named Professors at CityU
Prof. Rogach has been appointed to the Yeung Kin Man Chair Professorship in Photonics Materials at City University of Hong Kong. We are proud of our recognized achievements and looking forward to the new exciting research opportunities in the future!
October 2022
Perovskite LEDs are on the cover page of AdvMat
Another review paper "Stability of Perovskite Light-Emitting Diodes: Existing Issues and Mitigation Strategies Related to both Material and Device Aspects" has been published in Advanced Materials featuring a back cover page.
August 2022
Exploring thermoelectric potential of perovskites
A new review paper about "Metal Halide Perovskites as Emerging Thermoelectric Materials" has been issued in ACS Energy Letters.
October 2021
Our contribution to a new big review
A gigantic review article covering almost the whole field of perovskite nanocrystals titled "State of the Art and Prospects for Halide Perovskite Nanocrystals" has appeared in ACS Nano. This is a great read, and we are very proud to be amongst its authors!
June 2021
In carbon dots we trust
The new review paper "Optical Processes in Carbon Nanocolloids" is online, featuring our second-favorite class of materials—carbon dots! This review has been published in Chem.
April 2021
Highly efficient LEDs based on 2D perovskite films
A recent paper by Rogach group in collaboration with University of Shanghai, entitled "Smoothing the energy transfer pathway in quasi-2D perovskite films using methanesulfonate leads to highly efficient light-emitting devices" has been published in Nature Communication, and highlighted in CityU Research Stories as a prominent topic.
March 2021
From 2016 to 2020
"We do it because we love science"
Prof. Andrey Rogach has been interviewed by the Croucher Foundation News channel. The article "Shedding light on novel nanomaterials" is now available for reading online.
December 2020
The bright future of perovskite nanorods
Our recent review paper entitled "Metal Halide Perovskite Nanorods: Shape Matters" is featured on the back cover page of Advanced Materials.
November 2020
Prof. Rogach receives prestigious international and local awards
Prof. Andrey Rogach is mentioned in a CityU News article as an internationally and locally recognized top researcher in materials science.
February 2019
Green perovskite LEDs become more stable
A recent paper by Rogach group in collaboration with University of Shanghai, entitled "Trifluoroacetate Induced text-muted small-Grained CsPbBr3 Perovskite Films Result in Efficient and Stable Light-Emitting Devices" has been published in Nature Communication.
February 2019
Towards brighter carbon dots
A recent paper by Rogach group in collaboration with Changchun Institute of Optics, Fine Mechanics and Physics, entitled "Carbon dots produced via space-confined vacuum heating: maintaining efficient luminescence in both dispersed and aggregated states" is featured on the front cover page of Nanoscale Horizons.
November 2018
Growth mechanism of perovskite NCs
A paper by Huang et al. recently published in Nature Communication invites us to discuss the "Growth mechanism of strongly emitting CH3NH3PbBr3 perovskite nanocrystals with a tunable bandgap".
October 2017
Let's talk about carrier multiplication
An open-access review on "Carrier Multiplication Mechanisms and Competing Processes in Colloidal Semiconductor Nanostructures" by Kershaw and Rogach has been published in Materials.
September 2017
Cu nanoclusters + MOFs = ❤️
Research paper "Incorporating Copper Nanoclusters into Metal-Organic Frameworks: Confinement-Assisted Emission Enhancement and Application for Trinitrotoluene Detection" by Wang et al. has been featured on the inside front cover page of Particle and highlighted on AdvancedScienceNews!
July 2017
Revealing the crystal structure of perovskites by magneto-optical spectroscopy
Our collaborative work with the University of Bordeauxis is featured on the cover page of Nano Letters! Read the full story on "Neutral and Charged Exciton Fine Structure in Single Lead Halide Perovskite Nanocrystals Revealed by Magneto-optical Spectroscopy" online.
May 2017
Quantum dots in optoelectronics
Steve Kershaw's new review article on "Materials Aspects of Semiconductor Nanocrystals for Optoelectronic Applications" has been published in Materials Horizons.
March 2017
Advances in lead halide perovskite nanocrystals
A review article by Huang et al. on "Colloidal Lead Halide Perovskite Nanocrystals: Synthesis, Optical Properties and Applications" has been published in NPG Asia Materials.
November 2016
Revisiting water-based semiconductor QDs
A review article on "Aqueous Based Semiconductor Nanocrystals" has been published in Chem. Rev.
September 2016
All-copper nanocluster based LEDs
Rogach's group paper is featured on the back cover page of Advanced Science (Wiley): "All-Copper Nanocluster Based Down-Conversion White Light-Emitting Devices".
June 2016
Nanothermometry with quantum dots
Rogach's group paper "Temperature-Dependent Exciton and Trap-Related Photoluminescence of CdTe Quantum Dots Embedded in a NaCl Matrix: Implication in Thermometry" is featured on the back cover page of text-muted small.
January 2016
From 2011 to 2015
Aligning nanorods using light
A recent ACS Nano paper by Rogach group in collaboration with HKUST, entitled "Combination of Photoinduced Alignment and Self-Assembly to Realize Polarized Emission from Ordered Semiconductor Nanorods" is now online.
October 2015
Prof. Rogach elected as Fellow of Electromagnetic Academy
The 2014 PhotonIcs and Electromagnetics Research Symposium (PIERS) held in Guangzhou featured the announcement of 20 newly approved Fellows of The Electromagnetics Academy, including our group leader Prof. Andrey Rogach.
August 2014
Towards efficient solar-driven fuel production
Research paper "Redox Shuttle Mechanism Enhances Photocatalytic H2 Generation on Ni-Decorated CdS Nanorods" has been published in Nature Materials as a result of our ongoing Hong Kong-German collaborative project.
August 2014
Prof. Rogach—an Honorary Professor at Xi’An Jiaotong University
Prof. Andrey Rogach conferred the title of Honorary Professor of Xi’An Jiaotong University, China.
March 2014
Hierarchical nanostructures: a practical guide
A review on "Hierarchical SnO2 Nanostructures: Recent Advances in Design, Synthesis, and Applications" has been published in the Special Issue "Celebrating Twenty-Five Years of Chemistry of Materials". We are proud to see our artwork among the 27 images comprising front-page anniversary collage.
January 2014
Advancements in nanocrystal ion exchange
The 25th Anniversary Article by S. Gupta et al. on "Ion Exchange in Colloidal Nanocrystals" has been published in Adv. Mater.
September 2013
A review about narrow bandgap QDs
Review article by S. Kershaw et al. on "Narrow Bandgap Colloidal Metal Chalcogenide Quantum Dots: Synthetic Methods, Heterostructures, Assemblies, Electronic and Infrared Optical Properties" has been published in Chem. Soc. Rev.
March 2013
Self-assembled nanowires from CdTe QDs
Feature article by A. Rogach and co-workers on "Semiconductor Nanowires Self-Assembled from Colloidal CdTe Nanocrystal Building Blocks: Optical Properties and Application Perspectives" has been published in J. Mater. Chem.
September 2012
We've published a new book!
The book on "Complex-Shaped metal Nanoparticles: Bottom-Up Syntheses and Applications" co-edited by Andrey Rogach and Tapan Sau has been published by Wiley-VCH.
July 2012
Gas sensing project kick-off
Our ARG project with Alphasense on the gas sensing with infrared emitting quantum dots has started.
July 2012
The shape and properties of QD-nanotube heterostructures
A recent research paper by Haihua Yang et al. on "Heterojunction Engineering of CdTe and CdSe Quantum Dots on TiO2 Nanotube Arrays..." has been featured on the back cover page of Advanced Functional Materials.
April 2012
Andrey Rogach becomes an Associate Editor of ACS Nano
We are happy to announce that Prof. Rogach becomes an Associate Editor of the ACS Nano journal. It's a great honor for us.
October 2011
Prof. Rogach receives a "Grand" CityU Research Excellence Award
After a rigorous selection, the Panel confers the Grand Award to Prof. Andrey Rogach.
July 2011
Are QDs the future of solar cells technologies?
A perspective article has been published in J. Phys. Chem. Lett.: "Semiconductor Nanocrystal Quantum Dots as Solar Cell Components and Photosensitizers: Material, Charge Transfer, and Separation Aspects of Some Device Topologies". Check it out online!
July 2011
Non-spherical semiconductors enhanced with metal functionalities
A new feature article entitled "Hybrid Colloidal Heterostructures of Anisotropic Semiconductor Nanocrystals Decorated with Noble Metals: Synthesis and Function" has now been published online.
April 2011
Andrey Rogach is under the TOP 100 Material Scientists worldwide
Prof. Rogach appears in a Thomson Reuters list, ranked #51 by citation impact.
March 2011
The foundation of CFP
CFP (Centre for Functional Photonics) has been approved with Prof. Andrey Rogach as the Founding Director. By gathering scientists from four departments, CFP is to promote, coordinate, and bundle interdisciplinary research in the field of functional photonics at CityU.
January 2011