量子点敏化太阳能电池研究进展

doi:10.16085/j.issn.1000-6613.2015.10.013

摘要/Abstract

摘要： 量子点敏化太阳能电池(quantum dot-sensitized solar cells,QDSSCs)由于其理论转化效率高(44%)、带隙可调、价格低廉和稳定性好等优点引起了广泛关注。本文就QDSSCs的结构组成、工作原理、量子点(quantum dots,QDs)的合成方法、限制效率的因素以及优化方法等进行了综述,总结了量子点的两种合成方法即原位沉淀法和非原位沉淀法。与此同时,分析了目前影响QDSSCs效率的主要因素,如电子-空穴对的复合、光阳极结构不完善、电解质性能不佳等,最后对如何提高QDSSCs光电转化效率的研究重点和方向进行了展望,指出可通过改性量子点敏化剂、优化光阳极半导体及改善量子点与半导体间的界面特性等方法提高转换效率。

关键词: 量子点, 光阳极, 电解质, 太阳能电池, 转化效率

Abstract: Quantum Dot-Sensitized Solar Cells (QDSSCs) have been drawing much more attention due to their high efficiency, tunable band gap, low cost and good stability. This paper reviews the latest research progress in QDSSCs, including the structure of QDSSCs, the basic working principle of QDSSCs, the synthesis methods of quantum dots(QDs), the limiting factor of conversion efficiency and the optimization methods. Two preparation methods of QDs are also summarized as in-situ synthesis and ex-situ synthesis. Meanwhile, the effects of the recombination of electrons and holes, defective structure of photoelectrode and deficient functions of electrolyte on the efficiency of QDSSCs are analyzed, and the future research of QDSSCs is also prospected. Measures to improve the efficiency of QDSSCs, including QDs modification, photoelectrode structure optimization, and the modification of the interface between QDs and photoelectrode, are pointed out.

Key words: quantum dots, photoelectrode, electrolyte, solar cells, conversion efficiency

中图分类号:

TM914.4

马娟, 宋凤丹, 陈昊, 周运禄, 齐随涛, 杨伯伦. 量子点敏化太阳能电池研究进展[J]. 化工进展, 2015, 34(10): 3601-3608.

MA Juan, SONG Fengdan, CHEN Hao, ZHOU Yunlu, QI Suitao, YANG Bolun. Progress in quantum dot-sensitized solar cells[J]. Chemical Industry and Engineering Progree, 2015, 34(10): 3601-3608.

参考文献

[1] 李怀辉,王小平,王丽军,等. 硅半导体太阳能电池进展[J]. 材料导报,2011(19):49-53.

[2] 宋鑫. 量子点敏化太阳能电池:制备及光电转换性能的改进[D]. 天津:天津大学,2010.

[3] 车玉萍,翟锦. 新型纳米材料/结构在光电转化中的应用[J]. 中国科学:化学,2015(3):262-82.

[4] Tian J,Cao G. Semiconductor quantum dot-sensitized solar cells[J]. Nano Rev.,2013,4:22578.

[5] 杨健茂,胡向华,田启威,等. 量子点敏化太阳能电池研究进展[J]. 材料导报,2011,25(23):1-4.

[6] 孟庆波. 量子点太阳能电池技术概况[J]. 新材料产业,2013(3):61-63.

[7] Wang H,Luan C,Xu X,et al. In situ versus ex situ assembly of aqueous-based thioacid capped CdSe nanocrystals within mesoporous

TiO₂ films for quantum dot sensitized solar cells[J]. J. Phys. Chem.C.,2011,116(1):484-489.

[8] Tvrdy K,Kamat P V. Substrate driven photochemistry of CdSe quantum dot films:Charge injection and irreversible transformations

on oxide surfaces[J]. J. Phys. Chem. A,2009,113(16):3765-3772.

[9] Tvrdy K,Frantsuzov P A,Kamat P V. Photoinduced electron transfer from semiconductor quantum dots to metal oxide nanoparticles[J]. Proc. Natl. Acad. Sci. USA,2011,108:29-34.

[10] Chakrapani V,Baker D,Kamat P V. Understanding the role of the sulfide redox couple (S^2-/S_n^2-) in quantum dot-sensitized solar cells[J]. J. Am. Chem. Soc.,2011,133:9607-9615.

[11] 毛永强. 量子点材料的结构设计、生化分析及光电转换的研究[D]. 天津:天津大学,2012.

[12] 黄婵燕,陶俊超,刘玉峰,等. TiO₂纳米管的制备及其在太阳能电池中的应用[J]. 上海有色金属,2011(02):89-94.

[13] Jin-nouchi Y,Naya S,Tada H. Quantum dot-sensitized solar cell using a photoanode prepared by in situ photodeposition of CdS on nanocrystalline TiO₂ films[J]. J. Phys. Chem. C,2010,114(39):16837-16842.

[14] Lee H,Wang M,Chen P,et al. Efficient CdSe quantum dot-sensitized solar cells prepared by an improved successive ionic layer adsorption and reaction process[J]. Nano Lett.,2009,9(12):4221-4227.

[15] 孟庆波. 二十年磨一剑:新型太阳能电池[J]. 化学学报,2015(3):161-162.

[16] 吴晓春,陈文驹. 半导体量子点电子结构理论研究的进展[J]. 物理,1995(4):218-223.

[17] Lan J,Wei T,Feng S,et al. Effects of iodine content in the electrolyte on the charge transfer and power conversion efficiency of dye-sensitized solar cells under low light intensities[J]. J. Phys. Chem. C,2012,116(49):25727-25733.

[18] Wolfbauer G,Bond A M,MacFarlane D R. A channel flow cell system specifically designed to test the efficiency of redox shuttles in dye-sensitized solar cells[J]. Sol. Energy Mater. Sol. Cells,2001,70:85-101.

[19] 舒婷. 量子点敏化太阳能电池电解质的研究进展[J]. 化学工程师, 2013,27(4):42-44.

[20] Wang X,Zhu H J,Xu Y M,et al. Aligned ZnO/CdTe core-shell nanocable arrays on indium tin oxide:Synthesis and photoelectrochemical properties[J]. ACS Nano,2010,4(6):3302-3308.

[21] Fan S,Fang B,Kim J H,et al. Ordered multimodal porous carbon as highly efficient counter electrodes in dye-sensitized and quantum dot solar cells[J]. Langmuir,2010,26(16):13644-13649.

[22] 蔡小梅,陈福义,介万奇. SiO₂/CdS光子晶体的制备及其光学性能[J]. 功能材料,2006(08):1201-1203.

[23] Tang Z,Yin X,Zhang Y,et al. Synthesis of titanate nanotube CdS nanocomposites with enhanced visible light photocatalytic activity[J]. J. Inorg. Chem.,2013,52(20):11758-11766.

[24] Tak Y,Hong S J,Lee J S,et al. Solution-based synthesis of a CdS nanoparticle/ZnO nanowire heterostructure array[J]. Cryst. Growth Des.,2009,9(6):2627-2632.

[25] 杜运兴. ZnS荧光量子点的油水界面法合成及发光性质研究[D]. 上海:东华大学,2011.

[26] Kortan A R,Hull R,Opila R L,et al. Nucleation and growth of cadmium selendie on zinc sulfide quantum crystallite seeds,and vice versa,in inverse micelle media[J]. J. Am. Chem. Soc.,1990,112(4):1327-1332.

[27] Tian J,Gao R,Zhang Q,et al. Enhanced performance of CdS/CdSe quantum dot-sensitized solar cells via homogeneous distribution of quantum dots in TiO₂ film[J]. J. Phys. Chem. C,2012,116(35):18655-18662.

[28] 王海平. 一维纳米材料的合成及其在量子点敏化太阳能电池中的应用[D]. 兰州:兰州大学,2010.

[29] Margraf J T,Ruland A,Sgobba V,et al. Quantum dot-sensitized solar cells:Understanding linker molecules through theory and experiment [J]. Langmuir,2013,29(7):2434-2438.

[30] Yun H J,Paik T, Edley M E,et al. Enhanced charge transfer kinetics of CdSe quantum dot-sensitized solar cell by inorganic ligand exchange treatments[J]. Appl. Mater. Interfaces,2014,6(5):3721-3728.

[31] Huang Q,Li F,Gong Y,et al. Recombination in SnO₂-based quantum dots sensitized solar cells:The role of surface states[J]. J. Phys. Chem. C,2013, 117(21):10965-10973.

[32] 吴春芳,魏杰. 量子点敏化太阳能电池研究进展中出现的问题及其解决方案[J]. 功能材料,2013,44(1):1-7.

[33] Haque S A,Palomares E,Cho B M,et al. Charge separation versus recombination in dye-sensitized nanocrystalline solar cells:The minimization of kinetic redundancy[J]. J. Am. Chem. Soc.,2005,127(10):3456-3462.

[34] Haque S A,Tachibana Y,Willis R L,et al. Parameters influencing charge recombination kinetics in dye-sensitized nanocrystalline titanium dioxide films[J]. J. Phys. Chem. B,1999,104(3):538-547.

[35] Lee Y L,Chang C H. Efficient polysulfide electrolyte for CdS quantum dot-sensitized solar cells[J]. J. Power Source,2008,185(16):584-588.

[36] 徐雪青,史继富,徐刚,等. 一种用于量子点敏化太阳电池的基于硫基离子液体的多硫电解质及其制备方法:中国,102097213A[P]. 2011-06-15.

[37] 史继富,樊晔,徐雪青,等. 制备条件对Cu₂S光阴极性能的影响[J]. 物理化学学报,2012,28(4):857-864.

[38] Larramona G,Choné C,Jacob A,et al. Nanostructured photovoltaic cell of the type titanium dioxide,cadmium sulfide thin coating,and copper thiocyanate showing high quantum efficiency[J]. Chem. Mater.,2006,18(6):1688-1696.

[39] Kopidakis N,Benkstein K D,van de Lagemaat J,et al. Transport-limited recombination of photocarriers in dye-sensitized nanocrystalline TiO₂ solar cells[J]. J. Phys. Chem. B,2003,107(41):11307-11315.

[40] McPeak K M,Baxter J B. ZnO nanowires grown by chemical bath deposition in a continuous flow microreactor[J]. Cryst. Growth Des.,2009,9(10):4538-4545.

[41] Shalom M,Dor S,Rühle S,et al. Core/CdS quantum dot/shell mesoporous solar cells with improved stability and efficiency using an amorphous TiO₂ coating[J]. J. Phys. Chem. C,2009,113(9):3895-3898.

[42] Santra P K,Kamat P V. Mn-doped quantum dot-sensitized solar cells:A strategy to boost efficiency over 5%[J]. J. Am. Chem. Soc.,2012,134(5):2508-2511.

[43] Yang H,Holloway P H,Santra S. Water-soluble silica-overcoated CdS:Mn/ZnS semiconductor quantum dots[J]. J. Chem. Phys.,2004, 121(15):7421-7426.

[44] Zhang Y,Gan C,Muhammad J,et al. Enhanced fluorescence intermittency in Mn-doped single ZnSe quantum dots[J]. J. Phys.Chem. C,2008,112(51):20200-20205.

[45] Kongkanand A, Tvrdy K,Takechi K,et al. Quantum dot solar cells:Tuning photoresponse through size and shape control of CdSe-TiO₂ architecture[J]. J. Am. Chem. Soc., 2008,130(12):4007-4015.

[46] Lee Y,Chi C,Liau S. CdS/CdSe co-sensitized TiO₂ photoelectrode for efficient hydrogen generation in a photoelectrochemical cell[J]. Chem. Mater.,2009,22(3):922-927.

[47] Kamat P V. Quantum dot solar cells:Semiconductor nanocrystals as light harvesters[J]. J. Phys. Chem. C,2008,112(48):18737-18753.

[48] Williams E S,Major K J,Tobias A,et al. Characterizing the influence of TOPO on exciton recombination dynamics in colloidal CdSe quantum dots[J]. J. Phys. Chem. C,2013,117(8):4227-4237.

[49] Kamat P V,Christians J A,Radich J G. Quantum dot solar cells:Hole transfer as a limiting factor in boosting the photoconversion efficiency[J]. Langmuir, 2014,30(20):5716-5725.

[50] 杨祚宝. TiO₂纳米管的结构修饰、改性及敏化太阳电池的研究[D]. 上海:上海大学,2013.