CdTeS<sub>3</sub>量子点光阳极的制备与光电性能

摘要

将适量的碲、硫加入到硫化钠甲醇水溶液中反应生成Na₂TeS₃作为阴离子前驱体，以Cd （NO₃）₂为阳离子前驱体，通过连续离子层吸附与反应法（SILAR）制备CdTeS₃/TiO₂量子点敏化光阳极。采用拉曼光谱、X射线光电子能谱及能量色散X射线能谱分析表征了产物的价键结构和组成；通过紫外可见吸光光谱表征量子点的光吸收性能；利用J-V曲线与IPCE分别对CdS与CdTeS₃量子点敏化太阳能电池的光电性能进行了表征。实验结果表明，通过SILAR法制备的CdTeS₃量子点敏化太阳能电池能量转换效率比CdS量子点敏化太阳能电池能量转换效率高出约25%。

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	白述铭
	田建华
	马换梅
	单忠强

关键词：量子点敏化太阳能电池；碲硫化镉；连续离子层浸渍吸附与反应法

Abstract：

The sodium sulfide-telluride was used as the anionic precursor synthesized by using S, Te and sodium sulfide, and cadmium nitrate was used as the cationic precursor. The successive ionic layer adsorption and reaction (SILAR) was utilized to assemble cadmium sulfide-telluride onto the mesoporous TiO₂ films for quantum dots-sensitized solar cell (QDSC) applications. The Raman spectra and energy dispersive spectroscopy (EDX) were applied to investigate the bond structure and elements of sodium sulfide-telluride. The absorption capacity of the as-prepared CdTeS₃ quantum dots was assessed by UV-Vis spectrum. The photovoltic property of CdTeS₃ was characterized by J-V and IPCE curve. These results show that the long lifetime of electron and high availability ratio of light of CdTeS₃ QDSC are found to be the major advantages over the CdS QDSC. Those factors are leading to that the maximum conversion efficiency of CdTeS₃ QDSC is about 25% more than that of CdS QDSC.

Keywords： quantum dots sensitized solar cell； CdTeS₃； successive ionic layer adsorption and reaction method

Received 2015-04-15;

Fund:

国家973项目基金资助项目（2015CB251100）；天津市科学技术委员会资助项目（14JCDJC32400）

Corresponding Authors: 田建华,E-mail:jhtian@tju.edu.cn。 Email: jhtian@tju.edu.cn

About author: 白述铭(1989-),男,硕士研究生,现从事量子点敏化太阳能电池方面的研究。

引用本文:

白述铭, 田建华, 马换梅, 单忠强.CdTeS₃量子点光阳极的制备与光电性能[J]. 化学工业与工程, 2017,34(1): 41-46

Bai Shuming, Tian Jianhua, Ma Huanmei, Shan Zhongqiang.Preparation and Photoelectric Performance of CdTeS₃ Quantum Dots Sensitized Photoanode[J]. Chemcial Industry and Engineering, 2017,34(1): 41-46

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