Two new compounds based on the phenyltetrazole system, 5-(4-decyloxyphenyl)tetrazole (LTz-4) and N,N-diethyl-4-{[(2′-nitro-4′-tetrazoyl)phenyl]diazenyl}aniline (SD - 6), were synthesized and characterized as co-adsorbents in Dye-Sensitized Solar Cells (DSSCs). The effects of hydrophobic chain length and anchoring group on the properties of DSSCs containing the previously reported dye HD-14 and compared with the benchmark deoxycholic acid (DCA) are described. The charge-transfer resistance of dye/TiO₂ interface followed the order HD-14 – SD - 6 > HD-14 – LTz-4 > HD-14 –DCA. However, the V_OC for the dye HD-14 with co-adsorbent DCA was 0.71 V, for the and the dye HD-14 with co-adsorbent LTz-4 was 0.70 V and for the dye HD-14 with co-adsorbent SD - 6 was 0.67 V. Co-adsorbents LTz-4 and SD - 6 achieved mean solar-to-power conversion efficiencies (%η), for three devices, of 9.20 and 7.48, respectively, compared to 9.14 for DCA under the same experimental device conditions. For LTz-4 co-adsorbent, the results can be attributed to the repellent effect of the long alkyl chain that prevents the charge recombination on the semiconductor surface. For SD - 6, the molecular volume of the co-adsorbent and the presence of the nitro group in a lateral position should make it difficult to form a more compact layer with the dye. The sum of these contributions would allow the electrolyte to approach, reducing the efficiency of electron injection into TiO₂.

基于苯基四唑系统的两种新化合物5-（4-癸氧基苯基）四唑（LTz-4）和N，N-二乙基-4-{[（（2'-硝基-4'-四唑基）苯基]重氮基}苯胺（合成SD-6），并将其表征为染料敏化太阳能电池（DSSC）中的共吸附剂。描述了疏水链长度和锚定基团对包含先前报道的染料HD-14并与基准脱氧胆酸（DCA）比较的DSSCs性能的影响。染料/ TiO ₂界面的电荷转移电阻遵循HD-14 – SD-6  >  HD-14 – LTz-4  >  HD-14的顺序– DCA。但是，在V _OC为染料HD-14与共吸附剂DCA为0.71伏，对于和染料HD-14与共吸附剂LTZ-4为0.70 V和用于染料HD-14与共吸附剂SD -6为0.67V。助吸附剂LTz-4和SD-6在相同的实验下，三个装置的平均太阳能转换效率（％η）分别为9.20和7.48，而DCA为9.14设备条件。对于LTz-4作为共吸附剂，其结果可归因于长烷基链的排斥作用，阻止了半导体表面上的电荷重组。对于SD-6，共吸附剂的分子体积和在侧向位置上硝基的存在将使得难以与染料形成更致密的层。这些贡献的总和将使电解质接近，从而降低电子注入TiO ₂的效率。