Factors controlling the photoresponse of copper(<scp>i</scp>) diimine dyes containing hole-transporting dendrons in dye-sensitized solar cells: substituent and solvent effects
作者:Sven Y. Brauchli、Biljana Bozic-Weber、Edwin C. Constable、Nik Hostettler、Catherine E. Housecroft、Jennifer A. Zampese
DOI:10.1039/c4ra03700f
日期:——
efficiencies are obtained with the second-generation dyes [Cu(13)(L)]+ (L = 7–11 with Me, nBu, isoBu, hexyl, Ph groups); [Cu(13)(12)]+ (12 contains 2-naphthyl groups in the 6,6′-positions) and its first-generation analogue [Cu(13)(6)]+ perform poorly. When CH2Cl2 is used in the dipping cycle, DSCs with dyes [Cu(13)(1)]+ and [Cu(13)(7)]+ (6,6′-Me2-substituted) show the highest VOC, JSC and η values,
带有不同的6,6'-取代基(Me,n Bu,iso Bu,己基,Ph和2-萘基)并带有第一代(配体1-6)的两个2,2'-联吡啶(bpy)配体系列据报道,第二代(配体7-12)空穴在4,4'-位上传输树突。它们已被掺入均相铜(I)配合物[CuL 2 ] [PF 6 ]。用锚定配体((6,6'-二甲基-[2,2'-联吡啶] -4,4'-二基)双(4,1-亚苯基))双(膦酸)功能化的FTO / TiO 2电极,将13滴入[CuL]的CH 2 Cl 2或丙酮溶液中2 ] [PF 6 ]产生两个系列的表面结合型杂色染料。评估了它们在染料敏化太阳能电池(DSC)中的性能。染料功能化电极的固态吸收光谱表明,如果在染料浸渍循环中使用丙酮而不是CH 2 Cl 2,则染料吸收量更大,并且使用丙酮制得的DSC通常比使用CH 2 Cl制得的类似DSC更好。 2。使用丙酮浸渍溶液,第二代染料[Cu( 13)(L)]