Synthesis of Polymeric Carbon Nitride Films with Adhesive Interfaces for Solar Water Splitting Devices
Synthesis of Polymeric Carbon Nitride Films with Adhesive Interfaces for Solar Water Splitting Devices
复制标题
用于太阳能水分解装置的具有粘合界面的聚合物氮化碳薄膜的合成
DOI：
10.1021/acscatal.8b02549
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发表时间：
2018-09-01
期刊：
影响因子：
12.9
通讯作者：
Wang, Xinchen
中科院分区：
文献类型：
--
作者：
Fang, Yuanxing;Li, Xiaochun;Wang, Xinchen
制备了用于太阳能分水装置的聚碳氮化碳(PCN)薄膜。在此，尝试了五种前驱体及其混合物，以获得约40种不同形貌的PCN薄膜。我们发现，要在掺氟氧化锡玻璃上生长PCN薄膜，必须将含硫(S)前驱体和非S前驱体混合在一起。通过对PCN薄膜的研究发现，S只存在于PCN和FTO薄膜的交界处。在这种情况下，S不仅是PCN薄膜生长的起始点，也是帮助分水装置电荷迁移的连接点。结果表明，在无牺牲剂的氢氧化钠电解液中，在1.23VRHE下，在AM1.5光照下，获得了约100μA/cm~2的最佳性能。这可以归因于界面缺陷的减少和电荷复合的减少。这种提高了与FTO层的化学附着力的PCN薄膜的合成设想了这样的有机材料用于构建...
Polymeric carbon nitride (PCN) films are synthesized for solar water splitting devices. Herein, five precursors and their mixtures are attempted, achieving PCN films in ca. 40 different morphologies. We find that sulfur (S) containing and non-S precursors must be mixed to grow PCN films on fluorine doped tin oxide (FTO) glasses. Through the investigations of the PCN films, S is found to only exist at the interfaces between the PCN and FTO films. In this case, S acts not only as the initialization for the growth of the PCN films but also as connections to assist charge migration for water splitting devices. As a result, the best performance ca. 100 μA/cm2 is achieved at 1.23 VRHE under AM 1.5 illumination in NaOH electrolyte solution without sacrificial agent. This result can be attributed to the reduced defects along the interfaces and the lessened charge recombination. This synthesis of PCN films with the improved chemical adhesion to the FTO layer envisages such organic material for the construction of ...