体相异质结与同轴P-N结无机纳米晶阵列相结合制备有机聚合物太阳能电池

项目名称： 体相异质结与同轴P-N结无机纳米晶阵列相结合制备有机聚合物太阳能电池

项目编号： No.51302130

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 谈利承

作者单位： 南昌大学

项目金额： 25万元

中文摘要： 采用同轴P-N结无机纳米晶阵列与体相异质结相结合制备新型有机聚合物太阳能电池。通过选择合适的P型和N型无机纳米晶材料，采用水热法或模板法合成同轴P-N结无机纳米晶阵列，不仅为电子的传输提供捷径，还提高了对太阳能的吸收。通过调节同轴P-N结无机纳米晶阵列的直径、高度、阵列间距及其形貌，把共轭聚合物/PCBM通过旋涂甩膜方式填充阵列间形成活性层，再利用小分子液晶与同轴P-N结无机纳米晶阵列表面的相互作用和液晶的取向诱导作用，使表面富集液晶小分子的同轴P-N结无机纳米晶阵列发生自组装性驱动共轭聚合物/PCBM的有序堆砌。将同轴P-N结无机纳米晶阵列间距控制在激子扩散长度的尺寸范围，实现体相异质结给体/受体的纳米级微相分离，实现对整个活性层微观形貌的精确控制，从而抑制激子的复合，提高电荷的产生、扩散和传输效率。选择不同带隙的电子给体共轭聚合物制备得到高效率的有机聚合物太阳能电池。

中文关键词： 体相异质结；同轴P-N结；纳米晶阵列；自组装；聚合物太阳能电池

英文摘要： This project was preparing a new type of organic polymer solar cells with bulk-heterojunction and coaxial P-N junction inorganic nanocrystal arrays. Coaxial P-N junction inorganic nanocrystal arrays were synthesized via hydrothermal or template method by selecting appropriate P- and N-type inorganic nanocrystalline materials, which not only providing a shortcut for the electronic transmission, but also improving the absorption of solar energy. By adjusting the diameter, height and array pitch of coaxial P-N junction inorganic nanocrystalline arrays, the conjugated polymer/PCBM blends would well be filled into these arrays to form the active layer by spin coating. Then, the conjugated polymer/PCBM was driven self-assembly because of the orientation of liquid crystal (LC) phase and the interaction between LC molecules and the surface of coaxial P-N junction inorganic nanocrystal arrays. Furthermore, the arrays pitches were controlled within the dimensions of the exciton diffusion length to achieve nanometer scale microphase separation of the conjugated polymer/PCBM bulk-heterojunction and realize precise control of the morphology of the entire active layer, thereby inhibiting the exciton recombination, improving the charge generation, diffusion and transmission efficiency. It was promising to obtain organic polyme

英文关键词： bulk-heterojunction；coaxial P-N junction；nanocrystal array；self-assemble；polymer solar cell