Efficient Solution-Processed Bulk Heterojunction Solar Cells by Antiparallel Supramolecular Arrangement of Dipolar Donor-Acceptor Dyes
作者:Hannah Bürckstümmer、Elena V. Tulyakova、Manuela Deppisch、Martin R. Lenze、Nils M. Kronenberg、Marcel Gsänger、Matthias Stolte、Klaus Meerholz、Frank Würthner
DOI:10.1002/anie.201105133
日期:2011.12.2
heterojunction solar cells was studied and related to the molecular properties of the dyes. In particular, the effect of the large ground‐state dipole moments of these dyes was investigated by single crystal X‐ray analysis, which revealed antiparallel dimers, resulting in an annihilation of the dipole moments. This specific feature of supramolecular organization explains the excellent performance of merocyanine
一系列偶极供体-受体(D–A)报告了带有氨基噻吩供体和不同杂环受体单元的生色团。通过调节受体强度,可以在整个可见光谱范围内获得吸收带,并且可以调整前沿分子轨道的水平。研究了在溶液处理的整体异质结太阳能电池中与富勒烯受体共混的生色团的性能,并与染料的分子特性有关。特别是,通过单晶X射线分析研究了这些染料的大基态偶极矩的影响,揭示了反平行二聚体,导致偶极矩的消失。超分子组织的这一特殊特征解释了花青染料在有机太阳能电池中的出色性能。与HB366的混合物:PC 71 BM,具有最有效的太阳能电池V OC 1.0 V,一个的Ĵ SC的10.2毫安厘米-2,和4.5%的功率转换效率在标准AM1.5实现,100毫瓦厘米-2情况。在减少的照明条件下,甚至可以获得高达5.1%的更高效率。