The novel donor building-block - 9-(p-tolyl)-2,3,4,4a,9,9a-hexahydro-1H-carbazole was designed and employed in the synthesis of dye-sensitized solar cell (DSSCs). An effective, high-yielding synthesis of 4,6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9-(p-tolyl)-1,2,3,4,4a,9a-hexahydrocarbazole from 1,2,3,4,4a,9a-hexahydrocarbazole was realized. Three new metal-free organic sensitizers, containing the new donor building block were prepared by a stepwise approach from 4,7-dibromobenzo[c][1,2,5]chacogenadiazoles. A 2,1,3-Benzothiadiazole dye containing hexahydrocarbazole donor, thiophene as π-spacer and cyanoacrylate as anchoring electron acceptor showed photovoltaic properties higher than the well-known WS-2 sensitizer with PCE = 5.86 %. Although benzoxa- and –selenadiazole dyes have a bathochromic shift (24−30 nm) in the UV–vis spectra, and smaller energy gap E_g (about 0.1 eV), they have lower photovoltaic parameters, including PCE of 1.5–2.3 %. Introducing a new donor 9-(p-tolyl)-2,3,4,4a,9,9a-hexahydro-1H-carbazole into the construction of the DSSCs has broadened possibilities for the optimization of their photovoltaic properties.

设计了新型供体结构单元-9-（对甲苯基）-2,3,4,4a，9,9a-六氢-1 H-咔唑，并将其用于染料敏化太阳能电池（DSSC）的合成中。有效，高产的4,6-（4,4,5,5-四甲基-1,3,2-二氧杂硼硼烷-2-基）-9-（对甲苯基）-1,2,3，由1,2,3,4,4a，9a-六氢咔唑实现了4,4a，9a-六氢咔唑。通过逐步方法，由4,7-二溴苯并[c] [1,2,5]产气二氮唑制备了三种新的不含金属的有机敏化剂，其中包含新的供体结构单元。含有六氢咔唑供体，噻吩作为π-间隔基和氰基丙烯酸酯作为锚定电子受体的2,1,3-苯并噻二唑染料显示出比众所周知的WS-2高的光伏性能PCE = 5.86％的敏化剂。尽管苯并恶唑和-硒代二唑染料在紫外可见光谱中具有红移（24-30 nm），并且能隙E _g较小（约0.1 eV），但它们的光伏参数较低，包括1.5-2.3％的PCE。将新的供体9-（对甲苯基）-2,3,4,4a，9,9a-六氢-1 H-咔唑引入到DSSC的结构中为优化其光伏性能提供了广阔的可能性。