取向多壁碳纳米管的制备及其在染料敏化太阳能电池中的应用

Synthesis of Oriented Multi-Walled Carbon Nanotubes and Application in Dye-Sensitized Solar Cells

使用经少量氯铂酸处理过的金属钛板作为基底,采用化学气相沉积法获得多壁碳纳米管。扫描电镜观察表明,经过氯铂酸处理过的钛板比未经过处理的钛板表面粗糙度低,获得的碳纳米管有一定取向性。将这种复合体系用作染料敏化太阳能电池的对电极,制作电池并测量其光电性能。与使用未经处理的多壁碳纳米管/钛板对电极的电池相比,使用经过氯铂酸处理的取向多壁碳纳米管/钛板复合体系的电池的开路电压Voc、短路电流密度Jsc及填充因子ff均有明显提高,分别达到了741 mV,8.99 mA/cm2和0.49。

The multi-walled carbon nanotubes （MWNTs） were synthesized on titanium plate treated with a small amount of chloroplatinic acid as a substrate by a chemical vapor deposition method. The scanning electron microscope photographs show that the surface of chloroplatinic acid-treated titanium plate has a lower roughness than the untreated one, and the carbon nanotubes on the treated one have a better orientation. These MWNTs/Ti systems were used as counter electrodes for dye-sensitized solar cells and the photovoltaic properties were measured. The results show that the cell with chloroplatinic acid-treated titanium plate as counter electrode has higher open circuit voltage Foe （741 mV）, short circuit current density Jsc（8.99 mA/cm2） and fill factor f（0.49） than that with untreated one.