Increasing the Open Circuit Voltage of Bulk-Heterojunction Solar Cells by Raising the LUMO Level of the Acceptor
作者:Floris B. Kooistra、Joop Knol、Fredrik Kastenberg、Lacramioara M. Popescu、Wiljan J. H. Verhees、Jan M. Kroon、Jan C. Hummelen
DOI:10.1021/ol062666p
日期:2007.2.1
We report the synthesis, characterization, and electrochemical properties of ten new fullerene derivatives for usage in organic solar cells. The phenyl ring of PCBM was substituted with electron-donating and electron-withdrawing substituents to study their influence on the LUMO level of the parent fullerene. We varied the LUMO level over a range of 86 mV and show a small but significant change of the
我们报告了十个新的富勒烯衍生物用于有机太阳能电池的合成,表征和电化学性能。用给电子和吸电子取代基取代PCBM的苯环,以研究它们对母体富勒烯LUMO含量的影响。我们将LUMO电平在86 mV的范围内进行了变化,并显示了在MDMO-PPV:甲基富勒烯本体-异质结光伏电池中应用时,开路电压有微小但显着的变化。[结构:见文字]。