光子辅助n-InP少数航空公司的Levy飞行

Thermoelectric transport of GaAs, InP, and PbTe: Hybrid functional with ${\bf \it k \cdot p}$ interpolation versus scissor-corrected generalized gradient approximation

Boltzmann transport calculations based on band structures generated with density functional theory (DFT) are often used in the discovery and analysis of thermoelectric materials. In standard implementations, such calculations require dense ${\it k}$-point sampling of the Brillouin zone and are therefore typically limited to the generalized gradient approximation (GGA), whereas more accurate methods such as hybrid functionals would have been preferable. GGA variants, however, generally underestimate the band gap. While premature onset of minority carriers can be avoided with scissor corrections…

二维器件活性物质n型和p型磷烯中载流子输运和寿命的从头算研究

Charge carrier transport and lifetimes in n-type and p-type phosphorene as 2D device active materials: an ab initio study

在这项工作中，我们提供了一个详细的分析磷性能的n型和p型活性物质。该研究是基于磷烯电子结构的第一性原理计算，以及由此产生的电子和空穴散射速率和寿命。重点放在极端制度通常发现在半导体器件，即高电场和重掺杂，在那里的碰撞电离和俄歇复合可能发生。我们发现，电子引发的碰撞电离是弱于空穴引发的过程中，相比载体-声子相互作用率，这表明弹性碰撞电离引发的击穿。此外，计算的少数电子寿命仅受辐射复合的限制，而不是由俄歇过程，这表明磷烯可以在光电子器件中实现良好的量子效率。所提供的散射率和寿命是关键的输入数据的建模和理解的磷光体为基础的设备物理。