Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry, Shanxi University, Taiyuan, 030006, P.R. China.
Innovation Center of Chemistry and Molecular Science, Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Shanxi University, Taiyuan, 030006, P.R. China.
Angew Chem Int Ed Engl. 2017 Jul 24;56(31):9146-9150. doi: 10.1002/anie.201705399. Epub 2017 Jul 4.
The ternary iron-group thiospinels of metal diindium sulfides (MIn S , M=Fe, Co, Ni) with a vertically aligned nanosheet array structure are fabricated through an in situ solvothermal method on F-doped tin oxide (FTO) substrates, which are employed as one type of platinum (Pt)-free counter electrodes (CEs) in structure-dependent dye-sensitized solar cells (DSSCs). A DSSC assembled with ternary CoIn S CE achieves an photoelectric conversion efficiency (PCE) of 8.83 %, outperforming than that of FeIn S (7.18 %) and NiIn S (8.27 %) CEs under full sunlight illumination (100 mW cm , AM 1.5 G), which is also comparable with that of the Pt CE (8.19 %). Putting aside that the interconnected nanosheet array provides fast electron transfer and electrolyte diffusion channels, the highest PCE of CoIn S based DSSC results from its largest specific surface area (144.07 m g ), providing abundant active sites and the largest electron injection efficiency from CE to electrolyte.
通过在掺氟氧化锡（FTO）基底上的原位溶剂热法制备了具有垂直排列纳米片阵列结构的金属二吲哚硫化物（MInS，M=Fe、Co、Ni）的三元铁族硫属化合物，该结构被用作结构依赖性染料敏化太阳能电池（DSSC）中无铂（Pt）对电极（CE）的一种类型。组装的三元 CoInS CE 的光电转换效率（PCE）为 8.83%，优于 FeInS（7.18%）和 NiInS（8.27%）CE 在全阳光照射下（100mWcm，AM1.5G）的效率，这与 Pt CE（8.19%）的效率相当。除了互连的纳米片阵列提供了快速的电子转移和电解质扩散通道之外，CoInS 基 DSSC 的最高 PCE 归因于其最大的比表面积（144.07m g ），提供了丰富的活性位点和从 CE 到电解质的最大电子注入效率。
