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Sum Lab

@SumLab_NTU

Femtosecond Dynamics Lab led by @TzeChienSUM | @NTUSg | Ultrafast Spectroscopy #Perovskites

 Singapore
personal.ntu.edu.sg/tzechien/spms/
Joined July 2022
  • Tweets50
  • Following190
  • Followers233
Sum Lab retweeted
Sum Lab (@SumLab_NTU) profile picture
Sum Lab@SumLab_NTUMar 28
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
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🎓 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
Image from Sum Lab (@SumLab_NTU)
Image from Sum Lab (@SumLab_NTU)
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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/s41467-0…
Organic and inorganic sublattice coupling in two-dimensional lead halide perovskites

Organic and inorganic sublattice coupling in two-dimensional lead halide perovskites

Nature Communications - By resonant pumping the organic cation in 2D perovskite, Fu et al. report the electronic and mechanical couplings between the organic and inorganic sublattices, evidenced by...

nature.com
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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/acs…
Floquet Engineering of Excitons in Two-Dimensional Halide Perovskites via Biexciton States

Floquet Engineering of Excitons in Two-Dimensional Halide Perovskites via Biexciton States

Abstract. Layered two-dimensional halide perovskites (2DHPs) exhibit exciting non-equilibrium properties that allow the manipulation of energy levels throu

pubs.acs.org
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Sum Lab retweeted
ACS Nano (@acsnano) profile picture
ACS Nano@acsnano18 Apr 2024
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
TOC image from the article

ALT TOC image from the article

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🔬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/jac…
Making and Breaking of Exciton Cooling Bottlenecks in Halide Perovskite Nanocrystals

Making and Breaking of Exciton Cooling Bottlenecks in Halide Perovskite Nanocrystals

Abstract. Harnessing quantum confinement (QC) effects in semiconductors to retard hot carrier cooling (HCC) is an attractive approach for enabling efficien

pubs.acs.org
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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/jac…
Making and Breaking of Exciton Cooling Bottlenecks in Halide Perovskite Nanocrystals

Making and Breaking of Exciton Cooling Bottlenecks in Halide Perovskite Nanocrystals

Abstract. Harnessing quantum confinement (QC) effects in semiconductors to retard hot carrier cooling (HCC) is an attractive approach for enabling efficien

pubs.acs.org
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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/… #Perovskites #Research
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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/s41467-0…
Carrier multiplication in perovskite solar cells with internal quantum efficiency exceeding 100%

Carrier multiplication in perovskite solar cells with internal quantum efficiency exceeding 100%

Nature Communications - While there has been evidence of strong carrier multiplication effects in halide perovskites, studies in actual solar cells are lacking. Here, the authors demonstrate such...

nature.com
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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/s41467-0…
Carrier multiplication in perovskite solar cells with internal quantum efficiency exceeding 100%

Carrier multiplication in perovskite solar cells with internal quantum efficiency exceeding 100%

Nature Communications - While there has been evidence of strong carrier multiplication effects in halide perovskites, studies in actual solar cells are lacking. Here, the authors demonstrate such...

nature.com
Yue Wang (@Yue009_NTU) profile pictureYue Wang@Yue009_NTU10 Oct 2023
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/s41467-0…
Carrier multiplication in perovskite solar cells with internal quantum efficiency exceeding 100%

Carrier multiplication in perovskite solar cells with internal quantum efficiency exceeding 100%

Nature Communications - While there has been evidence of strong carrier multiplication effects in halide perovskites, studies in actual solar cells are lacking. Here, the authors demonstrate such...

nature.com
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An introductory blog post-how exciton spin depolarizes in CsPbBr3 nanocrystals😉 physicscommunity.nature.com/…
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Replying to @TzeChienSUM
@TzeChienSUM A simple approach to observe quantum coherence between exciton sublevels without a magnetic field in #perovskite nanocrystal ensembles. Underlying spin decoherence mechanisms are revealed nature.com/articles/s41467-0… – at West Region, Singapore
Zero-field quantum beats and spin decoherence mechanisms in CsPbBr3 perovskite nanocrystals

Zero-field quantum beats and spin decoherence mechanisms in CsPbBr3 perovskite nanocrystals

Nature Communications - Lead halide perovskites host bright triplet excitons which have applications in optospintronic devices. Here the authors observe quantum coherence between exciton sublevels...

nature.com
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Glad to see our recent work published online @NatureComms. We clarified the complex spin decoherence mechanisms in CsPbBr3 nanocrystals. Pleas check out this link rdcu.be/da0b3. Thank you to everyone on the team😊😊😊
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Sum Lab retweeted
Pablo (@PabloPBoix) profile picture
Pablo@PabloPBoix9 Mar 2023
What a great pleasure when the best scientists are also the best company for a nice dinner! Benvinguts a València! #MATSUS23 @Rabargues @TzeChienSUM Nam Gyu Park @IvanMoraSero Rafael Sanchez @annalisab2013 @Ismael_Ferguis,
Image from Pablo (@PabloPBoix)
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This breakthrough paves the way to wider adoption of perovskite solar cells that efficiently convert sunlight to electricity. bit.ly/NTUsg-perovskite #NTUsgResearch #perovskite #solar #sustainability #renewableenergy
Image from NTU Singapore (@NTUsg)
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#NTUsg scientists led by Prof Sum Tze Chien and Prof Lam Yeng Ming have developed a method to stabilise perovskite solar cells without lead, making them more eco-friendly. bit.ly/NTUsg-perovskite
Image from NTU Singapore (@NTUsg)
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Yeng Ming Lam, @SumLab_NTU and team at @NTUsg and @ASTARsg develop a method to fabricate low-dimensional #perovskite capping layers with metals other than lead or tin. #SolarCells go.nature.com/3J0c3dD
Image from Nature Energy (@NatureEnergyJnl)
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Farewell party for Dr. @sankaranrameshw 😉 and pre-celebration for Dr.@JWMelvinLim 😉 before group @SumLab_NTU meeting🥳🥳🥳. All the best to them ☺️
Image from Qiannan Zhang (@Qiann_Z)
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Do you know what happens to 2D perovskite devices under external E-field? Blueshifts, Seesaw between exciton modes, Efficiency roll-off, and more. Check out the Letter by @Qiann_Z @t_krisnanda @SumLab_NTU and follow for future research updates! go.acs.org/20R
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Sum Lab retweeted
Pablo (@PabloPBoix) profile picture
Pablo@PabloPBoix22 Aug 2022
Look at @JNogueraGomez’s hands in action. Are you interested in making such highly emissive perovskite nanoparticles with a straightforward process? No glovebox or materials purification is required!
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