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Publications

Preprints

Journals

  • Coherent Phonons, Localization and Slow Polaron Formation in Lead-free Gold Perovskite

Sankaran Ramesh, Yonghong Wang, Pavel Chabera, Rafael Araujo, Mustafa Aboulsaad, Tomas Edvinsson, Feng Gao, Tönu Pullerits

Arxiv Preprint

  • Enhancing Two-Dimensional Electronic Spectroscopy for Layered Halide Perovskites

Sankaran Ramesh, Minjun Feng, Tomoki Furuhashi, Tze Chien Sum

ACS Photonics 2023, 10, 12, 4456–4464

  • Unveiling the Impact of Organic Spacer Cations on Auger Recombination in Layered Halide Perovskites

Tomoki Furuhashi, Anil Kanwat, Sankaran Ramesh, Nripan Mathews, Tze Chien Sum

Advanced Optical Materials. 2024, 12, 2301230

  • Carriers, Quasi-particles, and Collective Excitations in Halide Perovskites

Jianhui Fu, Sankaran Ramesh, Jia Wei Melvin Lim, Tze Chien Sum

Chemical Reviews 2023, 123, 13, 8154–8231

  • Spacer cation engineering in Ruddlesden-Popper perovskites for efficient red light-emitting diodes with recommendation 2020 color coordinates

Jian Qing, Sankaran Ramesh, Xiao-Ke Liu, Heyong Wang, Hongling Yu, Chaoyang Kuang, Lintao Hou, Wenjing Zhang, Tze Chien Sum, Feng Gao

Applied Surface Science 2023, 616, 156454

  • Defect Passivation Using a Phosphonic Acid Surface Modifier for Efficient RP Perovskite Blue-Light-Emitting Diodes

Jayanta Kumar Mishra, Natalia Yantara, Anil Kanwat, Tomoki Furuhashi, Sankaran Ramesh, Teddy Salim, Nur Fadilah Jamaludin, Benny Febriansyah, Zi En Ooi, Subodh Mhaisalkar, Tze Chien Sum, Kedar Hippalgaonkar, Nripan Mathews

ACS Applied Materials & Interfaces 2022, 14, 30, 34238–34246​

  • Tailoring the Energy Manifold of Quasi-Two-Dimensional Perovskites for Efficient Carrier Extraction

Sankaran Ramesh, David Giovanni, Marcello Righetto, Senyun Ye, Elisa Fresch, Yue Wang, Elisabetta Collini, Nripan Mathews, Tze Chien Sum

Advanced Energy Materials 2022, 12, 2103556

  • Spacer Cation Alloying in Ruddlesden–Popper Perovskites for Efficient Red Light-Emitting Diodes with Precisely Tunable Wavelengths

Jian Qing, Sankaran Ramesh, Qiang Xu, Xiao‐Ke Liu, Heyong Wang, Zhongcheng Yuan, Zhan Chen, Lintao Hou, Tze Chien Sum, Feng Gao

Advanced Materials 2021, 33, 2104381

  • Electronic States Modulation by Coherent Optical Phonons in 2D Halide Perovskites

Jianhui Fu, Mingjie Li, Ankur Solanki, Qiang Xu, Yulia Lekina, Sankaran Ramesh, Ze Xiang Shen, Tze Chien Sum

Advanced Materials 2021, 33, 2006233

  • The Physics of Interlayer Exciton Delocalization in Ruddlesden–Popper Lead Halide Perovskites

David Giovanni*, Sankaran Ramesh*, Marcello Righetto, Jia Wei Melvin Lim, Qiannan Zhang, Yue Wang, Senyun Ye, Qiang Xu, Nripan Mathews, Tze Chien Sum [ * - Equal Contribution ]

Nano Letters 2021, 21, 1, 405–413

  • Origins of the long-range exciton diffusion in perovskite nanocrystal films: photon recycling vs exciton hopping

David Giovanni, Marcello Righetto, Qiannan Zhang, Jia Wei Melvin Lim, Sankaran Ramesh, Tze Chien Sum

Light: Science & Applications 2021, 10, 2

  • Hot carriers perspective on the nature of traps in perovskites

Marcello Righetto, Swee Sien Lim, David Giovanni, Jia Wei Melvin Lim, Qiannan Zhang, Sankaran Ramesh, Yong Kang Eugene Tay, Tze Chien Sum

Nature Communications 2020, 11, 271

  • Excitons in 2D perovskites for ultrafast terahertz photonic devices

Abhishek Kumar, Ankur Solanki, Manukumara Manjappa, Sankaran Ramesh, Yogesh Kumar Srivastava, Piyush Agarwal, Tze Chien Sum, Ranjan Singh

Science Advances 2020, 6, 8, eaax8821

  • Inducing formation of a corrugated, white-light emitting 2D lead-bromide perovskite via subtle changes in templating cation

Benny Febriansyah, David Giovanni, Sankaran Ramesh, Teck Ming Koh, Yongxin Li, Tze Chien Sum, Nripan Mathews, Jason England

Journal of Materials Chemistry C 2020, 8, 3, 889-893

  • Thermodynamic stability of LuRhO3 in a photoelectrochemical cell

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