Appointment: Professor

Research topics:

Ultrafast optical spectroscopy and time-integrated optical spectroscopy of emergent nanoscale and light harvesting material systems:

• Investigating light matter interactions
• Energy and charge transfer mechanisms
• Probing carrier and quasi-particle dynamics

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31 to 40 of 57 Results
May 5, 2020 - Manukumara Manjappa
Manjappa, Manukumara; Solanki, Solanki; Kumar, Abhishek; Sum, Tze Chien; Singh, Ranjan, 2020, "Replication data: Solution‐Processed Lead Iodide for Ultrafast All‐Optical Switching of Terahertz Photonic Devices", https://doi.org/10.21979/N9/ELRXN4, DR-NTU (Data), V2, UNF:6:Us+ae5DF/P7Hrk8nuu8U6A== [fileUNF]
Solution‐processed lead iodide (PbI2) governs the charge transport characteristics in the hybrid metal halide perovskites. Besides being a precursor in enhancing the performance of perovskite solar cells, PbI2 alone offers remarkable optical and ultrasensitive photoresponsive pro...
May 1, 2020 - Ankur Solanki
Ankur, Solanki; Mohammad Mahdi Tavakoli; Qiang Xu; Sai S.H. Dintakurti; Swee Sien Lim; Anirban Bagui; John V. Hanna; Jing Kong; Sum, Tze Chien, 2020, "Replication Data for: Heavy Water Additive in Formamidinium: A Novel Approach to Enhance Perovskite Solar Cell Efficiency", https://doi.org/10.21979/N9/31GZP9, DR-NTU (Data), V1
Heavy water or deuterium oxide (D2O) comprises of deuterium, a hydrogen isotope twice the mass of hydrogen. Contrary to the disadvantages of deuterated perovskites, such as shorter recombination lifetimes and lower/invariant efficiencies, we herein divulge the serendipitous effec...
May 1, 2020 - Manukumara Manjappa
Manjappa, Manukumara; Srivastava, Yogesh Kumar; Solanki, Ankur; Kumar, Abhishek; Sum, Tze Chien; Singh, Ranjan, 2020, "Replication Data for: Hybrid Lead Halide Perovskites for Ultrasensitive Photoactive Switching in Terahertz Metamaterial Devices", https://doi.org/10.21979/N9/AO8EGS, DR-NTU (Data), V1, UNF:6:q64smXm5gC1Z4eiNn8MDRw== [fileUNF]
The recent meteoric rise in the field of photovoltaics with the discovery of highly efficient solar‐cell devices is inspired by solution‐processed organic–inorganic lead halide perovskites that exhibit unprecedented light‐to‐electricity conversion efficiencies. The stunning perfo...
Apr 26, 2020 - LIM Jia Wei Melvin
Yang, Jie; Bao, Chunxiong; Ning, Weihua; Wu, Bo; Ji, Fuxiang; Yan, Zhibo; Tao, Youtian; Liu, Jun-Ming; Sum, Tze Chien; Bai, Sai; Wang, Jianpu; Huang, Wei; Zhang, Wenjing; Gao, Feng, 2020, "Replication Data for: Stable, High‐Sensitivity and Fast‐Response Photodetectors Based on Lead‐Free Cs2AgBiBr6 Double Perovskite Films", https://doi.org/10.21979/N9/QITZEA, DR-NTU (Data), V1
Solution-processed metal halide perovskites (MHPs) have demonstrated great advances on achieving high-performance photodetectors. However, the intrinsic material instability and the toxicity of lead still hinder the practical applications of MHPs-based photodetectors. In this wor...
Apr 26, 2020 - LIM Jia Wei Melvin
Shao, Feng; Qin, Peng; Wang, Dong; Zhang, Guoqing; Wu, Bo; He, Jianqiao; Peng, Wei; Sum, Tze Chien; Wang, Deliang; Huang, Fuqiang, 2020, "Replication Data for: Enhanced Photovoltaic Performance and Thermal Stability of CH3NH3PbI3 Perovskite through Lattice Symmetrization", https://doi.org/10.21979/N9/WTJDXM, DR-NTU (Data), V1
The organic–inorganic lead halide perovskites are attractive materials for photovoltaic application. The most widely studied perovskites based on methyl ammonium organic cation are less likely to form an ideal high-symmetry configuration at room temperature, leading to the appear...
Apr 21, 2020 - Kumar Abhishek
Kumar Abhishek; Solanki Ankur; Manjappa Manukumara; Ramesh Sankaran; Srivastava Yogesh Kumar; Agarwal Piyush; Sum, Tze Chien; Singh Ranjan, 2020, "Replication Data for: Excitons in 2D perovskites for ultrafast terahertz photonic devices", https://doi.org/10.21979/N9/CQMJGP, DR-NTU (Data), V1, UNF:6:ZfJvc1C1T+pYrsgk29IZsg== [fileUNF]
In recent years, two-dimensional (2D) Ruddlesden-Popper perovskites have emerged as promising candidates for environmentally stable solar cells, highly efficient light-emitting diodes, and resistive memory devices. The remarkable existence of self-assembled quantum well (QW) stru...
Apr 20, 2020 - David Giovanni
Giovanni, David; Chong, Wee Kiang; Liu, Yu Yang Fredrik; Dewi, Herlina Arianita; Yin, Ting Ting; Shen, Ze Xiang; Mathews, Nripan; Gan, Chee Kwan; Sum, Tze Chien, 2020, "Replication Data for: Coherent spin and quasi-particle dynamics in solution-processed layered 2D lead halide perovskites", https://doi.org/10.21979/N9/DX8UBN, DR-NTU (Data), V1
Raw Data for the published paper: "Coherent spin and quasi-particle dynamics in solution-processed layered 2D lead halide perovskites"
Apr 18, 2020 - David Giovanni
Julian A. Steele; Pascal Puech; Bartomeu Monserrat; Bo Wu; Ruo Xi Yang; Thomas Kirchartz; Haifeng Yuan; Guillaume Fleury; David Giovanni; Eduard Fron; Masoumeh Keshavarz; Elke Debroye; Guofu Zhou; Sum, Tze Chien; Aron Walsh; Johan Hofkens; Maarten B. J. Roeffaers, 2020, "Replication Data for: Role of Electron−Phonon Coupling in the Thermal Evolution of Bulk Rashba-Like SpinSplit Lead Halide Perovskites Exhibiting DualBand Photoluminescence", https://doi.org/10.21979/N9/IHR5FK, DR-NTU (Data), V1
This dataset contained part of the data which were obtained by NTU.
Apr 17, 2020 - Ankur Solanki
Ankur, Solanki; Lim Swee Sien; Subodh Mhaisalkar; Sum, Tze Chien, 2020, "Replication Data for: Role of Water in Suppressing Recombination Pathways in CH3NH3PbI3 Perovskite Solar Cells", https://doi.org/10.21979/N9/WUEMZC, DR-NTU (Data), V1
Moisture degradation of halide perovskites is the Achilles heel of perovskite solar cells. A surprising revelation in 2014 about the beneficial effects of controlled humidity in enhancing device efficiencies overthrew established paradigms on perovskite solar cell fabrication. De...
Apr 16, 2020 - LIM Jia Wei Melvin
Qing, Jian; Kuang, Chaoyang; Wang, Heyong; Wang, Yuming; Liu, Xiao‐Ke; Bai, Sai; Li, Mingjie; Sum, Tze Chien; Hu, Zhangjun; Zhang, Wenjing; Gao, Feng, 2020, "Replication Data for: High‐Quality Ruddlesden–Popper Perovskite Films Based on In Situ Formed Organic Spacer Cations", https://doi.org/10.21979/N9/ZMOIT8, DR-NTU (Data), V1
Ruddlesden-Popper perovskites (RPPs), consisting of alternating organic spacer layers and inorganic layers, have emerged as a promising alternative to 3D perovskites for both photovoltaic and light-emitting applications. The organic spacer layers provide a wide range of new possi...
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