中文摘要：

首次将染料分子3-乙基绕丹宁连接到[6，6]-苯基-C61-丁酸甲酯（PCBM）上，合成了具有增强光吸收性能的新型富勒烯受体光伏材料PCBRh．通过1HNMR，13CNMR和质谱分析确定了PCBRh的结构，紫外-可见吸收光谱测试表明所合成的PCBRh在300～600nm比起PCBM具有更强的光吸收，这归因于3-乙基绕丹宁高的吸光系数．电化学测试表明PCBRh的最低未占轨道（LUMO）能级比PCBM高0.1eV，这是由绕丹宁基团的给电子作用引起的．将PCBRh作为受体光伏材料与聚己基噻吩（P3HT）共混构建出体相异质结太阳能电池，在优化的制备工艺（P3HT/PCBRh＝1：1（质量比），135℃热处理10min）下，电池器件的能量转换效率为1．46％．通过AFM表征研究退火处理对光活性层的形貌的影响及其与电池器件效率的联系：与参比P3HT：PCBM共混薄膜相比，退火处理使P3HT：PCBRh薄膜中的P3HT聚集成长度约为20nm的长条，并且粗糙度较大，因此不利于激子的扩散与分离．

英文摘要：

A dye unit ,3-ethyl rhodanine ,was attached onto （6 ,6）-phenyl-C61 butyric acid methyl ester （PCBM ） for the first time ,affording a new fullerene acceptor PCBM-rhodanine （PCBRh） for polymer solar cells （PSCs） with enhanced light absorption .The successful attachment of the rhodanine moiety was confirmed by 1 H NMR ,13 C NMR and matrix-assisted laser desorption/ionization time-of-flight （MALDI-TOF ） mass spectroscopies . UV-vis spectroscopic study indicated that PCBRh had stronger absorptions in the region of 300-600 nm than PCBM ,and this was due to the high absorption coefficient of the dye unit of 3-ethyl rhodanine . Cyclic voltammetric measurement revealed that the lowest unoccupied molecular orbital （LUMO） level of PCBRh was 0 .1 eV higher than that of PCBM ,which can be understood by considering the electron donating property of the rhodanine moiety .Using PCBRh as an acceptor blending with poly（3-hexylthiophene-2 ,5-diyl） （P3HT） ,the bulk heterojunction （BHJ） PSC device exhibited a power conversion efficiency （PCE） of 1.46% under the optimized condition （blending ratio of P3HT ：PCBM = 1 ：1 （mass ratio ） ,annealing treatment at 135 ？ for 10 min） . The effect of annealing on the morphology of P3HT ：PCBRh active layer and its correlation with the device performance were studied by atomic force microscopy （AFM ） , revealing that in the annealed P3HT ：PCBRh blend film P3HT aggregated to long stripes with an average length of ca .20 nm and the RMS roughness increased compared to that for the reference P3HT ：PCBM blend film , thus leading to unfavorable exciton diffusion and dissociation.