Discover and Optimisation of High Efficiency Photocathode Materials

第四代光源迫切需要新型的光电阴极材料。这些由非常高的量子效率和低发射阴极组成，用于将电子注入自由电子激光腔。中尺度建模和光电发射预测的结合（适当时使用混合dft、TD-DFT和GW）将用于表征复杂材料表面和涂层的发射光谱。由此产生的结构-性质关系将在大型国际合作中使用，以产生用于材料表征的下一代光源。

There is an urgent need for novel photocathode materials for 4th generation light sources. These consist of very high quantum efficiency and low emmitance cathodes that are used to injecting electrons into a free electron lazer cavity. A combination of mesoscale modelling and photoemission prediction (from hybrid-DFT, TD-DFT and GW as appropriate) will be used to characterise the emmited spectrum from complex material surfaces and coatings. The resultant structure-property relationships will be used within a large international collaboration to generate next generation light sources for materials characteriation.