64 citations · 183 across the 9 of their papers we have counts for
9 papers
Visualising Policy-Reward Interplay to Inform Zeroth-Order Preference Optimisation of Large Language Models
Alessio Galatolo, Zhenbang Dai, Katie Winkle +1
Fine-tuning Large Language Models (LLMs) with first-order methods like back-propagation is computationally intensive. Zeroth-Order (ZO) optimisation uses function evaluations inste…
Ultrafast Vibrational Control of Hybrid Perovskite Devices Reveals the Influence of the Organic Cation on Electronic Dynamics
Nathaniel. P. Gallop, Dmitry R. Maslennikov, Katelyn P. Goetz +10
Vibrational control (VC) of photochemistry through the optical stimulation of structural dynamics is a nascent concept only recently demonstrated for model molecules in solution. E…
Discovery of enhanced lattice dynamics in a single-layered hybrid perovskite
Zhuquan Zhang, Jiahao Zhang, Zi-Jie Liu +9
Layered hybrid perovskites have attracted much attention in recent years due to their emergent physical properties and exceptional functional performances, but the coexistence of l…
Magnetic Bulk Photovoltaic Effect: Strong and Weak Field
Zhenbang Dai, Andrew M. Rappe
Shift current and ballistic current have been proposed to explain the bulk photovoltaic effect (BPVE), and there have been experiments designed to separate the two mechanisms. Thes…
Recent Progress in the Theory of Bulk Photovoltaic Effect
Zhenbang Dai, Andrew M. Rappe
The bulk photovoltaic effect (BPVE) occurs in solids with broken inversion symmetry and refers to DC current generation due to uniform illumination, without the need of heterostruc…
First Principles Calculation of Ballistic Current from Electron-Hole Interaction
Zhenbang Dai, Andrew M. Rappe
The bulk photovoltaic effect (BPVE) has attracted an increasing interest due to its potential to overcome the efficiency limit of traditional photovoltaics, and much effort has bee…
Phonon-Assisted Ballistic Current From First Principles Calculations
Zhenbang Dai, Aaron M. Schankler, Lingyuan Gao +2
The bulk photovoltaic effect (BPVE) refers to current generation due to illumination by light in a homogeneous bulk material lacking inversion symmetry. In addition to the intensiv…
The tetragonal phase of CHNHPbI is strongly anharmonic
Rituraj Sharma, Zhenbang Dai, Lingyuan Gao +7
Halide perovskite (HP) semiconductors exhibit unique strong coupling between the electronic and structural dynamics. The high-temperature cubic phase of HPs is known to be entropic…
Halide perovskites under polarized light: Vibrational symmetry analysis using polarized Raman
Rituraj Sharma, Matan Menahem, Zhenbang Dai +9
In the last decade, hybrid organic-inorganic halide perovskites have emerged as a new type of semiconductor for photovoltaics and other optoelectronic applications. Unlike standard…