利用脉冲激光沉积(PLD),在纳米多孔二氧化钛层(np-TiO2)与透明导电玻璃之间分别沉积了二氧化钛致密层(d-TiO2)和掺锂二氧化钛致密层(d-Li-TiO2),XRD衍射结果显示该致密层具有锐钛矿结构.电池开路电压随时间的衰减实验结果表明,该结构可以有效减慢开路电压的衰减,抑制透明导电玻璃上的电子向电解质逆向传输并进行电子复合的几率；同时,掺入锂后,致密TiO2层(d-TiO2)能带宽度变窄,降低了np-TiO2层与透明导电玻璃之间的界面电阻,使得np-TiO2层导带上的光生电子更容易地向透明导电玻璃传输,进而使得具有d-Li-TiO2层的染料敏化太阳电池比无致密层的染料敏化太阳电池光电转换效率提高了42％.
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