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Carrier dynamics

Ultrafast photoexcited-carrier dynamics

Understanding charge transfer, recombination, and electron–phonon coupling in low-dimensional materials and energy-relevant interfaces.

English

Photoexcited-carrier dynamics govern the performance of photovoltaic, optoelectronic, plasmonic, and photocatalytic systems. We use nonadiabatic molecular dynamics to examine interfacial charge transfer and electron–hole recombination in two-dimensional materials, clarifying the role of electron–phonon coupling. Our work also explores near-free-electron states in solar-cell applications and phonon- or dopant-controlled carrier lifetimes in phosphorene.

中文

光激发载流子的动力学决定太阳能电池、光电器件、表面等离激元和光催化体系的性能。课题组利用非绝热分子动力学研究二维材料中的界面电荷转移与电子–空穴复合,揭示电声耦合的重要作用,并探索近自由电子态、掺杂和声子激发对载流子寿命及功能器件设计的影响。