journal article·2019-05

Role of surface trapping state in the charge exchange characteristics of CdSe nanorod

Xue Lou, Ning Sui, Li-quan Zhang, Ye Zhang, Ming Cong, Qing-hui Liu, Zhi-hui Kang, Qiang Zhou, Han-zhuang Zhang, Ying-hui Wang

Journal of Nanoparticle Research· Volume 21· Issue 5
Publisher page

Abstract

The charge exchange (CE) characteristics of CdSe nanorod would be manipulated by the TBP and Li+. We employ electrochemical impedance spectroscopy (EIS) and cyclic voltammogram (CV) to scan the CE mechanism of CdSe nanorod. The EIS data shows that TBP would restrict the CE process and the Li+ would show the opposite role. The CV data confirms that the restriction behavior of CE affected by TBP is originated from the filling surface trapping state. Meanwhile, the facilitation of CE process manipulated by Li+ is coming from the creation of new trapping state and the deepening of trapping state. In comparison with TBP, Li+ would exhibit much extensive function in affecting the trapping state. Finally, the results help people to further understand the characteristics of trapping state in the charge property of nanocrystals.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films · Advancements in Battery Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (19)

Show source-provided references
1. Bai Y, Zhang J, Zhou DF, Wang YH, Zhang M, Wang P (2011) Engineering organic sensitizers for iodine-free dye-sensitized solar cells: red-shifted current response concomitant with attenuated charge recombination. J Am Chem Soc 133:11442–1144510.1021/ja203708k ↗
2. Bard AJ, Faulkner LR (2001) Electrochemical methods: fundamentals and applications[M], 2nd edn. Wiley, New York
3. Hagfeldt A, Boschloo G, Sun LC, Kloo L, Pettersson H (2010) Dye-sensitized solar cells. Chem Rev 110:6595–666310.1021/cr900356p ↗
4. Jian XM, Tu JP, Qiao YQ, Lu Y, Wang XL, Gu CD (2013) Synthesis and electrochemical performance of LiVO3 cathode materials for lithium ion batteries. J Power Sources 236:33–3810.1016/j.jpowsour.2013.02.004 ↗
5. Jones M, Kumar S, Lo SS, Scholes GD (2008) Exciton trapping and recombination in type II CdSe/CdTe nanorod heterostructures. J Phys Chem C 112:5423–543110.1021/jp711009h ↗
6. Law M, Greene LE, Johnson JC, Saykally R, Yang PD (2005) Nanowire dye-sensitized solar cells. Nat Mater 4:455–45910.1038/nmat1387 ↗
7. Li JT, Cushing SK, Zheng P, Tess S, Meng FK, Bristow AD, Manivannan A, Wu NQ (2014) Solar hydrogen generation by a CdS-Au-TiO2 sandwich nanorod array enhanced with au nanoparticle as electron relay and plasmonic photosensitizer. J Am Chem Soc 136:8438–844910.1021/ja503508g ↗
8. Nan W, Niu Y, Qin H, Cui F, Yang Y, Lai R, Lin W, Peng X (2012) Crystal structure control of zinc-blende CdSe/CdS core/shell nanocrystals: synthesis and structure-dependent optical properties. J Am Chem Soc 134:19685–1969310.1021/ja306651x ↗
9. Orazem ME, Tribollet B (2008) Electrochemical impedance spectroscopy[M], 1st edn. Wiley, New York10.1002/9780470381588 ↗
10. Peng ZA, Peng XG (2002) Nearly monodisperse and shape-controlled CdSe. J Am Chem Soc 124:3343–335310.1021/ja0173167 ↗
11. Rui XH, Jin Y, Feng XY, Zhang LC, Chen CH (2011) A comparative study on the low-temperature performance of LiFePO4/C and Li3V2(PO4)3/C cathodes for lithium-ion batteries. J Power Sources 196:2109–211410.1016/j.jpowsour.2010.10.063 ↗
12. Sauvage F, Decoppet JD, Zhang M, Zakeeruddin SM, Comte P, Nazeeruddin M, Wang P, Grätzel M (2011) Effect of sensitizer adsorption temperature on the performance of dye-sensitized solar cells. J Am Chem Soc 113:9304–931010.1021/ja110541t ↗
13. Tachibana Y, Akiyama HY, Ohtsuka Y, Torimoto T, Kuwabata S (2007) CdS quantum dots sensitized TiO2 sandwich type photoelectrochemical solar cells. Chem Lett 36:88–8910.1246/cl.2007.88 ↗
14. Tachibana Y, Umekita K, Otsuka Y, Kuwabata S (2008) FAST TRACK COMMUNICATION: Performance improvement of CdS quantum dots sensitized TiO2 solar cells by introducing a dense TiO2 blocking layer. J Phys D Appl Phys 41:1–510.1088/0022-3727/41/10/102002 ↗
15. Veamatahau A, Jiang B, Seifert T, Makuta S, Latham K, Kanehara M, Teranishid T, Tachibana Y (2015) Origin of surface trap states in CdS quantum dots: relationship between size dependent photoluminescence and sulfur vacancy trap states. Phys Chem Chem Phys 17:2850–285810.1039/C4CP04761C ↗
16. Wang P, Zhang J, He HL, Xu XL, Jin YD (2015) The important role of surface ligand on CdSe/CdS core/shell nanocrystals in affecting the efficiency of H2 photogeneration from water. Nanoscale 7:5767–577510.1039/C4NR07343F ↗
17. Yu QJ, Wang YH, Yi ZH, Zu NN, Zhang J, Zhang M, Wang P (2010) High-efficiency dye-sensitized solar cells: the influence of lithium ions on exciton dissociation, charge recombination, and surface states. ACS Nano 4:6032–603810.1021/nn101384e ↗
18. Zeng Q, Kong X, Sun Y, Zhang Y, Tu L, Zhao J, Zhang H (2008) Synthesis and optical properties of type II CdTe/CdS core/shell quantum dots in aqueous solution via successive ion layer adsorption and reaction. J Phys Chem C 112:8587–859310.1021/jp711395f ↗
19. Zheng J, Yuan X, Ikezawa M, Jing P, Liu X, Zheng Z, Kong X, Zhao J, Masumoto Y (2009) Efficient photoluminescence of Mn2+ ions in MnS/ZnS core/shell quantum dots. J Phys Chem C 113:16969–1697410.1021/jp906390y ↗