喷涂型聚合物太阳能电池光敏层垂直分相的微观过程及电荷传输行为研究

项目名称： 喷涂型聚合物太阳能电池光敏层垂直分相的微观过程及电荷传输行为研究

项目编号： No.61505018

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 程江

作者单位： 重庆文理学院

项目金额： 20万元

中文摘要： 聚合物太阳能电池具有成本低、重量轻、柔性化等突出优点，具有广泛的应用前景，是近年来新能源材料与器件的研究热点。但实际光电转换效率较低，与理论值尚有很大差距。其中光敏层未能实现有效的垂直分相，电荷在传输过程中损耗过高是降低器件性能的主要原因之一。针对上述关键科学问题，本项目拟先利用喷涂制备技术实现光敏层给体与受体材料在垂直方向上形成浓度梯度差，再利用极性溶剂喷雾对光敏层进行处理，进一步提高给体和受体的垂直分相，使之各自形成连续穿插的网络结构，构建高效的载流子传输通道。同时系统地分析给体和受体网络在光敏层垂直分相过程中的形成机制和变化规律，及对提高电荷传输效率的贡献，发展出成熟的光敏层垂直分相的喷涂工艺，为最终有效提高聚合物太阳能电池的转换效率和稳定性提供必要的理论基础和实践经验。

中文关键词： 聚合物太阳能电池；喷涂技术；相分离

英文摘要： Polymer solar cells (PSCs) have received much attention from the field of new energy materials and devices due to their attractive advantages of light weight, flexibility and low cost fabrication. However the photoelectric conversion efficiency is quite low comparing with the theoretical values. One of the most important reasons is the active layer fails to achieve effective vertical phase separation that cause charge loss during charge transport process. To solve this key scientific problem, we plan to use an advanced spray-coating technique to create a concentration gradient in the vertical direction of the active layer, and then continue to improve the phase separation of the donor material and acceptor materials by a polar solvents-spraying technique. Then insertion network structure will format as an efficient carrier transmission channel. Also we plan to analysis donor material and acceptor network motion mechanism, variation law and the contribution to the charge transfer efficiency systematically. Finally establish an effective technique for active layer vertical phase separation by spray-coating, and provide the necessary theoretical basis and practical experience to improve the PCE and stability of PSCs.

英文关键词： polymer solar cell;spray-coating;phase separation