Panchromatic cross-conjugated π-bridge NIR dyes for DSCs
作者:Yanbing Zhang、Hammad Cheema、Alexander E. London、Amber Morales、Jason D. Azoulay、Jared H. Delcamp
DOI:10.1039/c7cp06703h
日期:——
Four organic sensitizers incorporating a cross-conjugated cyclopenta[2,1-b:3,4-b′]dithiophene (CPDT) π-bridge have been synthesized. As a result of molecular engineering, broad high energy bands and red shifted absorption maxima and onset is observed relative to a benchmark analogue (C218) using a non-cross-conjugated CPDT π-bridge. The use of a cross-conjugated bridge allows a new strategy for tuning
合成了四种有机增敏剂,它们含有交叉共轭的环戊[2,1- b:3,4- b ']二噻吩(CPDT)π桥。分子工程的结果是,相对于使用非交叉共轭CPDTπ桥的基准类似物(C218),观察到宽的高能带和最大吸收峰和红移。交叉共轭桥的使用允许一种新的策略来调节染料的能量学,并通过增加额外的高能吸收带来引入增加的吸收均匀性。这些染料在相同条件下显示出高达800 nm的太阳-电转换,并且一种衍生物超过了C218的性能。