The water splitting properties of InGaN photoanodes equipped with ZnO nanowires were examined in this study. Over the solar spectrum range, the absorbance exhibited a remarkable increase due to the enhanced light absorption caused by the ZnO nanowires. By varying the ZnO nanowires length, the photo-to-current density of photoanodes was increased from 0.017 to 0.205 mA/cm2 at 1.23 V versus reversible hydrogen electrode. Consequently, the incident-photon-to-current efficiency was increased by a factor of 5.5 as the ZnO nanowires growth time increased from 2 to 4 h. The results of this research demonstrate the importance of light absorbance and the surface reaction sites of photoanodes on energy harvesting.
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机译：在这项研究中检查了配备ZnO纳米线的InGaN光阳极的水分解性能。在整个太阳光谱范围内，由于ZnO纳米线引起的光吸收增强，吸光度显着增加。通过改变ZnO纳米线的长度，与可逆氢电极相比，在1.23 V下光阳极的光电流密度从0.017增加到0.205 mA / cm 2 。因此，随着ZnO纳米线的生长时间从2小时增加到4小时，入射光子-电流效率提高了5.5倍。这项研究的结果表明光吸收和光阳极表面反应部位对能量收集的重要性。
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