Abstract Using in situ ultrafast laser spectroscopic techniques to monitor the charge dynamics of semiconductor photocatalysts under operating conditions is essential for digging out the veritable interactions between charge carriers and the reactive species. This real-time observation is desirable for optimizing individual components and their integration in advanced photoelectrochemical (PEC) and photocatalytic systems, which can achieve the “Holy Grail” of solar energy harvesting and solar fuel generation. This Review summarizes the recent developments of employing transient absorption spectroscopy for in situ measurements of charge dynamics on semiconductor nanostructures. The implications in the PEC and photocatalytic reactions toward hydrogen production and carbon dioxide reduction will be discussed, along with future outlooks and perspectives.

中文翻译：

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用于先进光电化学和光催化应用的半导体纳米结构的原位电荷载流子动力学

摘要 使用原位超快激光光谱技术监测半导体光催化剂在操作条件下的电荷动力学对于挖掘电荷载流子和反应物种之间真正的相互作用至关重要。这种实时观察对于优化单个组件及其在先进光电化学 (PEC) 和光催化系统中的集成是可取的，可以实现太阳能收集和太阳能燃料发电的“圣杯”。本综述总结了使用瞬态吸收光谱法对半导体纳米结构上的电荷动力学进行原位测量的最新进展。将讨论 PEC 和光催化反应对制氢和二氧化碳还原的影响，