通过原子层沉积制备的染料敏感光电合成细胞的分层分子组件
Degao Wang1, Matthew V Sheridan1, Bing Shan1
1Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States.
Journal of the American Chemical Society
|August 17, 2017
概括
一种新的原子层沉积 (ALD) 方法为染料敏感光电合成细胞 (DSPEC) 创建了强大的分子组件. 这种技术增强了催化剂-染色体的方向,提高了光驱动的水分裂效率.
科学领域:
- 材料科学
- 电化学
- 表面化学
背景情况:
- 染料敏感光电合成细胞 (DSPEC) 需要精确的催化剂-染色体定向以获得最佳效率.
- 创建这些组件的传统方法在范围和灵活性方面存在局限性.
研究的目的:
- 开发一种强大的原子层沉积 (ALD) 程序,用于制备分子染色体催化剂组件.
- 研究这些组件在光驱水分裂中的性能.
主要方法:
- 使用了一种新型的ALD程序,其中涉及酸盐衍生金属复合物的溶液沉积,然后进行气相处理.
- 形成的桥梁金属氧化物单元 (Al,Sn,IV,Ti,IV,Zr,IV) 连接染色体和催化剂物种.
- 在电子转移研究中使用过渡吸收光谱,并进行光驱水分裂实验.
主要成果:
- 通过各种桥梁金属氧化物成功制备了稳定的染色体催化剂组件.
- 通过使用SnO2桥梁组件,在440nm的水氧化中实现了17.1%的事件光子到电流效率 (IPCE).
- 使用三双染色体和Ni (II) 催化剂组件,证明了光驱动的生产.
结论:
- 与基于溶液的方法相比,ALD方法为创建稳定的表面组件提供了更高的范围和灵活性.
- 这种新方法可以精确控制分子组合,从而提高DSPEC的性能.
- 开发的方法有望推进高效的太阳能燃料生产技术.
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