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科学通报  2011 

Gd2O3:Eu3+的制备及其在染料敏化太阳能电池中的应用

, PP. 2026-2031

Keywords: 染料敏化太阳能电池,下转换,发光材料,稀土氧化物,p-型掺杂

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Abstract:

采用均匀沉淀法制备Gd2O3Eu3+下转换发光粉,对其光学特性进行了分析,并将其应用到染料敏化太阳能电池中,将电池吸收很弱的紫外光转化为可被染料吸收利用的可见光,提高了电池的光电流;通过Gd2O3Eu3+的p-型掺杂效应,使材料的费米能级上升,增大了电池的开路电压;同时,发光层中稀土氧化物的存在不但能降低激发态染料往TiO2导带注入电子的效率,而且能在电极表面形成一个势垒抑制电荷复合,对电池的光电流和光电压都有影响.当Gd与Ti的摩尔比为6100时,电池的光电转换效率达到最大值7.01%,这比没掺发光粉的电池提高了17.4%.

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