稀土有机配合物掺杂凝胶薄膜的制备及其发光性能研究

【作者】 李伟；

【导师】 樊先平；

【作者基本信息】 浙江大学 ， 材料学， 2005， 硕士

【摘要】 本文系统总结评述了有机无机复合光功能材料的研究进展、前景和面临的主要问题。应用荧光光谱和太阳能电池的I-V特性曲线等综合实验方法研究了TEOS/GPTMS溶胶系统中掺杂稀土离子Eu3+和有机配体二苯甲酰基甲烷(DBM)或噻吩甲酰三氟丙酮(TTA)凝胶单层膜及多层膜的发光特性以及掺杂稀土离子Tb3+和有机配体对羟基苯甲酸(Hy)或磺基水杨酸的凝胶单薄膜及多层膜的发光特性,初步揭示了基质组成、稀土离子的掺杂含量、有机配体种类以及膜层厚度等对稀土有机配合物掺杂薄膜发光性能的影响规律,取得了较好的实验结果。研究了以太阳能电池片和硅片为基片拉制的TEOS/GPTMS溶胶系统中共掺Eu3+离子与有机配体、Tb3+离子与有机配体的凝胶单薄膜及多层膜的发光特性,基于Tb3+离子有机配合物和Eu3+离子有机配合物对太阳光中的紫外光部分的不同吸收范围且在300nm左右存在共同的吸收带,通过在同一凝胶薄膜中同时掺杂Tb3+离子有机配合物和Eu3+离子有机配合物,实现了两种稀土有机配合物在紫外光区的激发叠加,使薄膜在紫外光区的激发范围扩展到200nm-400nm,同时在300nm左右出现叠加激发峰,增加了薄膜对紫外光的吸收效率,从而高效地将紫外光转换到可见光。与镀膜前相比,涂覆稀土有机配合物掺杂薄膜的单晶硅太阳能电池的转换效率可增加10-15%。更多还原

【Abstract】 The progress and the prospect in the research of organic-inorganic hybrid optical materials have been systematically summarized in the paper. The luminescence behaviors of single-coating TEOS/GPTMS films or multiple-coating TEOS/GPTMS films on the glass or silicon by dip-coating, which were doped with the Eu3+ complexes and Dibenzoylmehane (DBM) or 2-theonyltrifluoroacetone (TTA). have been investigated. Also, the luminescence behaviors of the gel films doped with Tb3+ complexes with p-Hydroxybenzoic acid (Hy) or sulphosalicylic acid (SSA) have been investigated. The influence of the matrix composition, the doping concentration of lanthanide ions, the species of ligands and the coating layer number of films on luminescence behavior of lanthanide complexes doped gel films were described.Moreover, the luminescence behaviors and I-V characteristic curves of the silicon solar energy cell doped with Eu3+ complexes and Tb3+ complexes doped coatings which were prepared by dip-coating have been investigated. The Eu3+ complexes and Tb complexes doped coatings have effectively converted the UV lights to the visible ones, which are more sensitive for c-Si PVCs. As results, the improvement obtained in the silicon solar cell efficiency has been found to be about 10-15 % when the Eu3+ complexes and Tb + complexes co-doped coatings were used on silicon solar cells.更多还原