常温电化学法沉积硅薄膜并部分晶化以制备太阳能电池

Amorphous Si thin film solar cells have good prospects for their numerous advantages, such as large-scale-production ability and low cost. However, the high investment cost and Wronski-Stacbler effect have become the bottleneck of their development. This project proposed the solution electrochemical deposition method to prepare amorphous Si thin film at room temperature in order to reduce the investment cost; the cells were fabricated as p-i-n structure and the films were partially crystallized to reduce the Wronski-Stacbler effect. This subject may provide guidance for the solution electrochemical method to prepare partially crystalline Si thin film solar cells.

摘要：非晶硅太阳能电池因可大规模生产、成本低廉等众多优点有着广阔的应用前景，但前期投资成本高和光致衰减效应成了其发展的瓶颈。本项目拟采用溶液法电沉积路线在常温下制备非晶硅薄膜以降低投资成本；制备电池时采用p-i-n结构，同时将所得到的非晶硅进行部分晶化以减弱光致衰减的影响。本课题的开展可以为溶液法制备部分晶化硅太阳能电池提供指导。

在非水溶液体系中，使用直流电沉积与脉冲电沉积的方法，通过电化学还原 Si 的卤化物，在不锈钢薄板电极表面成功制备非晶硅薄膜。.在硅膜上修饰贵金属，并用作作为染料敏化太阳能电池的对电极。铂/硅材料作为染料敏化太阳能电池的对电极，可以减小I3-/I-过电位达0.05V，组装成太阳能电池后，效率为6.57%，与标准铂对电极相比，开路电压增加了0.04V，提升了5.6%；短路电流增加了0.57mAcm-2，提升了3.3%；功率转换效率增加0.45%，提升了7.4%。.以硅膜为主体，制备固体太阳能电池。利用硅薄膜为基底，以三氧化钼为电子阻挡层，铝和银为电极制作了太阳能电池，获得了初步的太阳能转换效率，其中开路电压为0.26 V，短路电流为0.46 mA/cm2，效率为0.066%，填充因子为0.55。.共发表相关SCI论文26篇，授权专利1个。