基于内嵌金属富勒烯的有机太阳能电池受体材料的研究

项目名称： 基于内嵌金属富勒烯的有机太阳能电池受体材料的研究

项目编号： No.21271174

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 孙宝云

作者单位： 中国科学院高能物理研究所

项目金额： 80万元

中文摘要： 太阳能的开发利用已成为世界关注的热点课题。富勒烯衍生物是目前文献报道的具有最高光电转化率的有机太阳能电池受体材料（7.4%）。金属富勒烯具有与之相似的共轭体系，但由于不同的结构和性质，预计可以达到超过10%的光电转化率，与多晶硅太阳能电池（15%）相比，具有更大的竞争优势。本研究将在本实验室有能力宏量制备金属富勒烯，且拥有完备的材料表征及器件制作的设备的基础上，利用多年金属富勒烯及有机太阳能电池的研究经验，制备足量的不同种类的金属富勒烯衍生物，优化金属富勒烯衍生物结构和性质，调整分子HOMO、LUMO能级和能带宽度，得到与给体材料能级匹配的金属富勒烯受体材料，并与给体材料结合制备有机太阳能电池器件， 测定其光电转换率，并结合多种检测手段对衍生物及器件的性质进行研究，探讨内嵌金属、碳笼与载流子之间的相互关系，使金属富勒烯成为具有更高光电转换效率的受体材料，提高有机太阳能电池光电转化率。

中文关键词： 富勒烯；太阳能电池；衍生物；光电效率；受体材料

英文摘要： Organic photovoltaic cells (OPVs) have attracted more attention as a renewable energy source owing to their advantages of easy fabrication, low cost, light weight, and the possibility to fabricate flexible devices. So far, one of the most representative bulk-heterojunction polymer solar cells is the device based on a blend of P3HT as an electron donor and a soluble fullerene derivative (PCBM) as an electron acceptor, whose power conversion efficiency (PCE) reaches up to 7.4%. Compared with fullerenes, metallofullerenes have different structures, novel electronic properties and the metal-to-cage electron transfer. Using Lu3N@C80-PCBH as acceptor materials, OPV efficiencies had been prospected to be greater than 10%. To further improve the device performance, different metallofullerene derivative-based photovoltaic electron acceptors are particularly important. However, little attention was paid to it since it was difficult to get enough amounts of metallofullerenes. Since 2008, we had established a new extraction method so that gram quantities of metallofullerenes with a high purity of 99.5% have been purified in one month. Based on this method, we have built a scaling-up pilot plant and it guarantees that we can acquire stable and enough metallofullerene materials. Having bulk quantities of these materials at h

英文关键词： fullerene；solar cell；derivatives；photovoltaic performances；acceptor