Sum Lab

Room-temperature polaritonics is here 🔥 Our work shows ultrafast coherent exciton–polaritons in layered perovskites with giant LT splitting—unlocking slow light & next-gen photonics. Proud to share this in Nature Photonics! rdcu.be/faauS

Thrilled to share that our Chemical Science article, “Direct determination of multiphoton absorption cross-sections by transient absorption spectroscopy,” has been selected for the 2025 Chemical Science Most Popular Physical Chemistry Collection 🎉 🔗 pubs.rsc.org/doi/D5SC03392F

🎓 Huge congratulations to Dr. Rui Cai and Dr. Tomoki Furuhashi on receiving their PhD degrees today! Your hard work, dedication, and perseverance have truly paid off. Wishing you both continued success in your journeys ahead! 👏🎉 #PhDGraduation #NewDoctors

💧Bright perovskite quantum dots that love water? Yes, really! Our latest @AdvMater paper reports ultra-stable, mono-disperse aqueous perovskite quantum emitters with >80% PLQY & single-photon emission at ≈0.1 nM. 🔗 doi.org/10.1002/adma.2… @SumLab_NTU #QuantumDots #Perovskites

Congratulations, Dr. Tomoki Furuhashi, on successfully defending your thesis! Your perseverance and dedication have truly paid off. Wishing you an exciting and successful journey ahead in all your future endeavors! 👏🏻👏🏻🎉🎉🍾🍾🙌🙌

Congratulations to Dr. Cai Rui on successfully defending your thesis today! Your hard work and dedication have paid off - here’s to a bright future ahead!👏🏻👏🏻🎉🎉🍾🍾🙌🙌

🎉 Our heartiest congratulations to Dr. Wang Yue on earning her PhD! 🥳 Your dedication and hard work have truly paid off. Here’s to new adventures and groundbreaking discoveries ahead! 👩‍🎓✨#NTUsg

The organic and inorganic sublattices in 2D halide perovskites are not electronically isolated but show both electronic and mechanical couplings. Check out our latest work @NatureComms by @JamesFu09318317 @SumLab_NTU nature.com/articles/s4146…

One more Chapter for my PhD thesis🤗. We used chirped pulses to precisely modulate the exciton spectrum, via the biexciton mediated optical Stark effect in 2D halide perovikites. @SumLab_NTU @NanoLetters Check it 👇 pubs.acs.org/doi/10.1021/ac…

Researchers led by @TzeChienSUM @NTUsg synthesized weakly confined HOIP #QuantumDots at room temperature which exhibit superior #singlephoton purity with nearly blinking-free behavior. #perovskites #excitons Read the full text here 👉 go.acs.org/8Yn

🔬Delving into Cooling Bottlenecks in Perovskite Nanocrystals! Our work reveals how quantum confinement influences carrier cooling rates—size, composition, and interactions play key roles. Key insights for hot carrier extraction and beyond. @SumLab_NTU pubs.acs.org/doi/10.1021/ja…

Making and Breaking of Exciton Cooling Bottlenecks in Halide Perovskite Nanocrystals | Journal of the American Chemical Society @NTUsg @TzeChienSUM #Exciton #Cooling #Bottlenecks #Halide #Perovskites #Nanocrystals pubs.acs.org/doi/10.1021/ja…

Discover the vital role of organic spacers in layered halide perovskites and their impact on Auger recombination. Dive into our latest article in Advanced Optical Materials. onlinelibrary.wiley.com/doi/10.1002/ad… #Perovskites #Research

Would carrier multiplication manifest in an actual perovskite solar cell device? Check out our latest work @NatureComms by @Yue009_NTU @SumLab_NTU nature.com/articles/s4146…

Wang et al. @Yue009_NTU @SumLab_NTU demonstrate strong #carrier multiplication effect in halide #perovskites with low threshold of 2Eg and high #efficiency of 99.4%, realizing unbiased internal quantum efficiency up to 160% #Devices #GettingApplied nature.com/articles/s4146…

Heartiest Congratulations Dr Melvin Lim - @JWMelvinLim

NTU Femtolab gathering at #ICMAT2023! A warm homecoming back to SG to all our alumni - Professor Chen Shi, Professor Li Mingjie and Professor Ankur Solanki!

Discover how pump-push-probe spectroscopy enhances our understanding of hot-carrier dynamics in #perovskites. Join us (@GeoFong @TzeChienSum) on this exciting journey of unraveling the mysteries of carrier-phonon interactions in #perovskites. shorturl.at/xSV28 @AdvSciNews