D
David Giovanni
Researcher at Nanyang Technological University
Publications - 46
Citations - 2119
David Giovanni is an academic researcher from Nanyang Technological University. The author has contributed to research in topics: Perovskite (structure) & Chemistry. The author has an hindex of 17, co-authored 37 publications receiving 1379 citations. Previous affiliations of David Giovanni include National Institute of Education.
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Journal ArticleDOI
Synthesis of Organic–Inorganic Lead Halide Perovskite Nanoplatelets: Towards High-Performance Perovskite Solar Cells and Optoelectronic Devices
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Discerning the Surface and Bulk Recombination Kinetics of Organic–Inorganic Halide Perovskite Single Crystals
Bo Wu,Huy Tiep Nguyen,Zhiliang Ku,Guifang Han,David Giovanni,Nripan Mathews,Hong Jin Fan,Tze Chien Sum +7 more
TL;DR: In this paper, an all-optical study is presented that clearly distinguishes the surface kinetics from those of the bulk in the representative methylammonium-lead bromide (MAPbBr3) and -lead iodide(MAPbI3) single crystals.
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Highly spin-polarized carrier dynamics and ultralarge photoinduced magnetization in CH3NH3PbI3 perovskite thin films.
David Giovanni,Hong Ma,Hong Ma,Julianto Chua,Michael Grätzel,Michael Grätzel,Ramamoorthy Ramesh,Subodh Mhaisalkar,Nripan Mathews,Tze Chien Sum +9 more
TL;DR: This work highlights the potential of CH3NH3PbI3 as a new candidate for ultrafast spin switches in spintronics applications and elucidates the electron spin relaxation lifetime to be ∼7 ps and that of the hole is ∼1 ps through a simple two-level model.
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Spectral Features and Charge Dynamics of Lead Halide Perovskites: Origins and Interpretations
Tze Chien Sum,Nripan Mathews,Guichuan Xing,Swee Sien Lim,Wee Kiang Chong,David Giovanni,Herlina Arianita Dewi +6 more
TL;DR: The discoveries of long balanced electron-hole diffusion lengths and gain properties in halide perovskites underpin their significant roles in uncovering structure-function relations and providing essential feedback for materials development and device optimization.
Journal ArticleDOI
Tunable room-temperature spin-selective optical Stark effect in solution-processed layered halide perovskites
David Giovanni,Wee Kiang Chong,Herlina Arianita Dewi,Krishnamoorthy Thirumal,Ishita Neogi,Ramamoorthy Ramesh,Subodh Mhaisalkar,Nripan Mathews,Tze Chien Sum +8 more
TL;DR: Novel room-temperature, strong ultrafast spin-selective optical Stark effect in solution-processed (C6H4FC2H4NH3)2PbI4 perovskite thin films and presents a straightforward strategy for tuning light-matter coupling strength.