Synthesis and characterization of the hole-conducting silica/polymer nanocomposites and application in solid-state dye-sensitized solar cell.
Synthesis and characterization of the hole-conducting silica/polymer nanocomposites and application in solid-state dye-sensitized solar cell.
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DOI：
10.1021/am4001858
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发表时间：
2013-05
影响因子：
9.5
通讯作者：
Wen Yuan;Hui Zhao;Heyi Hu;Shen Wang;G. Baker
中科院分区：
文献类型：
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作者：
Wen Yuan;Hui Zhao;Heyi Hu;Shen Wang;G. Baker
空穴导电二氧化硅/聚合物纳米复合材料具有独特的物理和化学性质，在储能和混合型太阳能电池领域具有重要的应用前景。尽管将空穴传导聚合物接枝到二氧化硅纳米颗粒表面上的常规策略是使用原位氧化聚合，但是已经出现了使用表面引发的受控活性自由基聚合来将聚合物锚在二氧化硅上的有希望的替代方案。从后一种方法得到的二氧化硅/聚合物纳米复合材料更化学和热稳定，因为与原位聚合的静电相互作用相比，共价键更强。本文报道了这些纳米复合材料与螺-MeO 3（2，2 '，7，7'-四（N，N-二对甲氧基苯胺）-9，9 '-螺二芴）混合作为一种新型空穴导体在固态染料敏化太阳能电池（ss-DSSC）中的应用。该ss-DSSC的功率转换效率高于全螺-MeOCl_3 ss-DSSC。值得注意的是，短路电流提高了26%。这是由大尺寸的二氧化硅/聚合物纳米复合材料在光阳极顶部形成额外的光散射层来解释的。这是第一次将导电光散射层引入ss-DSSC以提高电池性能。
Hole-conducting silica/polymer nanocomposites exhibit interesting physical and chemical properties with important applications in the field of energy storage and hybrid solar cells. Although the conventional strategy of grafting hole-conducting polymer onto the surface of silica nanoparticles is to use in situ oxidative polymerization, a promising alternative of using surface-initiated controlled living radical polymerization has arisen to anchor the polymer on the silica. The resulting silica/polymer nanocomposites from the latter method are more chemically and thermally stable because of the strong covalent bonding compared to the electrostatic interaction from in situ polymerization. The use of these nanocomposites mixed with spiro-MeOTAD (2,2',7,7'-tetrakis(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene) as a new hole conductor in the application of solid-state dye-sensitized solar cell (ss-DSSC) is reported here. The power conversion efficiency of this ss-DSSC is higher than the full spiro-MeOTAD ss-DSSC. Notably, the short circuit current improves by 26%. It is explained by large size silica/polymer nanocomposites forming an additional light scattering layer on the top of photoanode. This is the first time a conductive light scattering layer is introduced into ss-DSSC to enhance cell performance.