物理化学学报 >> 2016, Vol. 32 >> Issue (4): 822-827.doi: 10.3866/PKU.WHXB201602262

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硫基离子液体电解质拓宽量子点敏化太阳能电池的应用温度范围

史继富1,黄启章1,2,万青翠1,徐雪青1,*(),李春生3,*(),徐刚1,*()   

  1. 1 中国科学院广州能源研究所, 中国科学院可再生能源与天然气水合物重点实验室, 广东省新能源和可再生能源重点实验室, 广州 510640
    2 中国科学院大学, 北京 100049
    3 华北理工大学化工学院, 河北唐山 063009
  • 收稿日期:2016-01-22 发布日期:2016-04-07
  • 通讯作者: 徐雪青,李春生,徐刚 E-mail:xuxq@ms.giec.ac.cn;lichsheng@163.com;xugang@ms.giec.ac.cn
  • 基金资助:
    国家自然科学基金(21103194, 51506205);广东省科技计划(2014A010106018, 2013A011401011);粤港合作项目(2014B050505015);广东省特支计划(2014TQ01N610);中国科学院广州能源研究所所长创新基金(y307p81001);广东省太阳能光热先端材料工程技术研究中心建设项目(2014B090904071)

Sulfide-Based Ionic Liquid Electrolyte Widening the Application Temperature Range of Quantum-Dot-Sensitized Solar Cells

Ji-Fu SHI1,Qi-Zhang HUANG1,2,Qing-Cui WAN1,Xue-Qing XU1,*(),Chun-Sheng LI3,*(),Gang XU1,*()   

  1. 1 Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy and Gas Hydrate, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Chinese Academy of Sciences, Guangzhou 510640, P. R. China
    2 University of Chinese Academy of Sciences, Beijing 100049, P. R. China
    3 College of Chemical Engineering, North China University of Science and Technology, Tangshan 063009, Hebei Province, P. R. China
  • Received:2016-01-22 Published:2016-04-07
  • Contact: Xue-Qing XU,Chun-Sheng LI,Gang XU E-mail:xuxq@ms.giec.ac.cn;lichsheng@163.com;xugang@ms.giec.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(21103194, 51506205);Science and Technology Planning Project ofGuangdong Province, China(2014A010106018, 2013A011401011);Guangdong-Hong Kong Joint Innovation Project of Guangdong Province, China(2014B050505015);Special Support Program of Guangdong Province, China(2014TQ01N610);Director Innovation Foundation of GuangzhouInstitute of Energy Conversion, China(y307p81001);Solar Photothermal Advanced Materials Engineering Research Center Construction Projectof Guangdong Province, China(2014B090904071)

摘要:

制备了1-甲基-3-丙基咪唑硫离子液体电解质,并应用在量子点敏化太阳能电池中。通过优化S和Na2S的浓度,电解质的电导率在25℃下达到了12.96 mS·cm-1。差示扫描量热法分析表明离子液体电解质的玻璃化转变温度为-85℃。采用该电解质的量子点敏化太阳能电池在25℃下达到了3.03%的光电转化效率(η),与采用水基电解质的电池的效率3.34%接近。由于本文中的离子液体电解质具有低玻璃化转变温度和不易挥发的优点,采用离子液体电解质的量子点敏化太阳能电池在-20℃ (η=2.32%)及80℃ (η=1.90%)的温度下表现出了比水基电解质优异的光电转化性能。

关键词: 量子点敏化太阳能电池, 离子液体电解质, 1-甲基-3-丙基咪唑硫, 应用温度, 效率

Abstract:

We report the preparation and application of a 1-methyl-3-propylimidazolium sulfide-based ionic liquid electrolyte for quantum-dot-sensitized solar cells. By optimizing the concentrations of S and Na2S, a considerable conductivity of 12.96 mS·cm-1 is achieved at 25℃. Differential scanning calorimetry indicates that the glass transition temperature of the electrolyte is-85℃. The quantum-dot-sensitized solar cell assembled with this ionic liquid electrolyte displays a high energy conversion efficiency (η) of 3.03% at 25℃, which is comparable to the efficiency of quantum-dot-sensitized solar cells using a water-based polysulfide electrolyte (η= 3.34%). Due to the favorable thermal properties of this ionic liquid electrolyte (lower glass transition temperature and nonvolatility at higher temperatures), the quantum-dot-sensitized solar cell maintains satisfactory η even at-20℃ (η= 2.32%) and 80℃ (η= 1.90%), which is superior to the cell using the water-based polysulfide electrolyte.

Key words: Quantum-dot-sensitized solar cell, Ionic liquid electrolyte, 1-Methyl-3-propylimidazolium sulfide, Application temperature, Efficiency

MSC2000: 

  • O646