Ma Jingyao, Wang Jiawei, Shi Xin, Sun Tianqi, Dai Pengpeng
Xinjiang Key Laboratory of Luminescence Minerals and Optical Functional Materials, School of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi 830054, China.
Nanomaterials (Basel). 2025 Jun 6;15(12):875. doi: 10.3390/nano15120875.
ZnO nanorods are promising nanomaterials for photoelectrochemical photodetectors (PEC PDs). However, the weak photocurrent density, delayed response, and low stability of ZnO are major drawbacks for their applications. To address these challenges, we integrated multilayer MoS nanosheets with ZnO nanorods using a chemical bath deposition method. The resulting ZnO/MoS heterojunction achieved a photocurrent density of 1.02 mA/cm (~20 times higher than that of bare ZnO), ultrafast response times (90/150 ms), and 92% stability retention over 3600 s. These enhancements originated from suppressed charge recombination and accelerated water oxidation kinetics. Our work provides another possible energy-saving route toward developing high-efficiency and stable ZnO-based photoanodes for practical applications in PEC PDs.
氧化锌纳米棒是用于光电化学光电探测器（PEC PDs）的很有前景的纳米材料。然而，氧化锌的光电流密度弱、响应延迟和稳定性低是其应用的主要缺点。为了应对这些挑战，我们采用化学浴沉积法将多层二硫化钼纳米片与氧化锌纳米棒集成在一起。所得的氧化锌/二硫化钼异质结实现了1.02 mA/cm的光电流密度（比裸氧化锌高约20倍）、超快响应时间（90/150毫秒）以及在3600秒内92%的稳定性保持率。这些增强效果源于电荷复合的抑制和水氧化动力学的加速。我们的工作为开发用于PEC PDs实际应用的高效稳定的氧化锌基光阳极提供了另一条可能的节能途径。
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