The different-shape Cu₂O nanostructured in solar water splitting system serves as the photon absorber structure for modulating photoelectric conversion to challenge the issue of the high resistance and low electronic mobility with the different light trapping effect due to the orientation and geometry of Cu₂O. Finite difference time domain (FDTD) simulation results demonstrate that the Cu₂O nanostructured of truncated octahedral exhibits photonic Fano resonance compared with the other shapes. The generation rate of electrons and holes can rise with truncated octahedral Cu₂O nanostructures on the ZnO nanowires. By combining solar water splitting with photonic Fano resonance, we can use a lower voltage 0.7 V (the standard potential of the water electrolysis is −1.23 V) to splitting water, and then separate H₂ and O₂ into different electrodes. The hydrogen generation rate of truncated octahedral Cu₂O can reach 3 × 10^–4 ml/s·cm², which is about 10 times higher than that of Cu₂O in other shapes by modulating photonic Fano resonance, which has the potential application in the field of integrated quantum system in the future.

中文翻译：

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ZnO纳米线上多形Cu ₂ O纳米粒子的光子Fano共振调节水分解池中氢的产生效率

太阳能分水系统中不同形状的Cu ₂ O纳米结构作为光子吸收剂结构，用于调制光电转换，以挑战高电阻和低电子迁移率的问题，由于Cu ₂的取向和几何形状而具有不同的光捕获效果O.时域有限差分（FDTD）模拟结果表明，与其他形状相比，截短的八面体的Cu ₂ O纳米结构表现出光子Fano共振。截短的八面体Cu ₂可以提高电子和空穴的生成速率ZnO纳米线上的O纳米结构。通过将太阳能分解水与光子Fano共振结合，可以使用较低的电压0.7 V（水电解的标准电势为-1.23 V）分解水，然后将H ₂和O ₂分离到不同的电极中。截短的八面体Cu ₂ O的氢生成速率可以达到3×10 ^–4 ml / s·cm ²，这是通过调节光子Fano共振而比其他形状的Cu ₂ O高约10倍，具有潜在的应用前景在未来的集成量子系统领域。