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在染料共敏感化纳米晶体TiO2薄膜上的多步电子转移过程

John N Clifford¹, Emilio Palomares, Md K Nazeeruddin

¹Centre for Electronic Materials and Devices, Chemistry Department, Imperial College, South Kensington, Exhibition Road, SW 7 2AY London, United Kingdom.

Journal of the American Chemical Society

|May 6, 2004

概括

这项研究引入了一种新的方法,用于使用异氧化处理的二氧化 (TiO2) 薄膜的多层共敏感化. 这种技术通过实现高效的电子转移和减少电荷重组来提高光伏设备的性能.

科学领域:

材料科学材料科学材料科学
太阳能光伏发电是如何实现的
纳米技术纳米技术

背景情况:

纳米晶体二氧化 (TiO2) 薄膜对于光伏应用至关重要.
目前的敏感化方法面临的挑战是接口电荷重组,限制了设备的效率.

研究的目的:

开发一种用于TiO2膜的多层共敏感化方法.
通过抑制电荷重组来提高光伏设备的性能.

主要方法:

一种新异氧化物处理方法应用于单敏化TiO2膜.
第二种敏感染料被沉积在经过处理的薄膜上.
研究了矢量,多步电子转移过程.

主要成果:

异氧化物处理使有效的多层共敏感化成为可能.
多步电子转移过程是通过仔细的染料选择来实现的.
观察到显著抑制了界面电荷重组.

结论:

开发的方法为提高光伏设备效率提供了一条途径.
使用这种技术的多层共同敏感化优于单层方法.
这种方法对推进太阳能电池技术充满希望.

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