Distribution of Copper States, Phases, and Defects across the Depth of a Cu-Doped CdTe Solar Cell

Nano-Cu Derived from a Copper Nitride Precatalyst for Reductive Coupling of Nitroaromatics to Azo Compounds

“…Structural reconstruction is a common but important phenomenon in catalysis, where the catalyst undergoes surface rearrangement or even phase transformation under working conditions. − On the one hand, the structure change may destroy the initial active catalytic surface, leading to the loss of active sites and catalyst deactivation. − On the other hand, the in situ reconstruction might be beneficial for the formation of new and robust active sites, thus significantly boosting the catalytic activity, tuning the selectivity and improving the stability. − In such a scenario, the original catalyst is more like a “pre-catalyst”, which would gradually evolve and generate real active sites for specific catalytic reactions. Therefore, the investigation of structural reconstruction is crucial to deeply understand the catalytic mechanism and guide the rational design of more advanced catalysts.…”

Grain boundary strain localization in a CdTe solar cell revealed by scanning 3D X-ray diffraction microscopy

“…Kranz et al 14 used inverted substrate geometry CdTe cells to study sulfur diffusion via grain boundaries using a combination of atom probe tomography and secondary ion mass spectrometry. Rojsatien et al 15 showed evidence of sulfur diffusion all the way to the back contact. However, none of these studies characterize the grain boundaries and identify which ones promote impurity diffusion.…”