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Photoelectrochemical and charge transfer properties of SnS/TiO2 heterostructure nanotube arrays

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Abstract

SnS/TiO2 heterostructure nanotube arrays (NTAs) were synthesized through a successive ionic layer adsorption and reaction process. The photoelectrochemical (PEC) property of SnS/TiO2 heterostructure NTAs was evaluated in liquid junction PEC solar cells. The results revealed that SnS/TiO2 heterostructure NTAs exhibited PEC property with an open-circuit voltage of 1.08 V, a short-circuit current density of 1.55 mA/cm2, and a conversion efficiency of 0.75% under 1 sun illumination. These values are higher than those of pristine SnS nanoparticles and TiO2 NTAs. Surface photovoltage spectroscopy and phase spectroscopy measurements were conducted to verify the formation of heterojunction and probe charge transfer between SnS and TiO2 NTAs. The PEC property and surface photovoltaic response enhancement of SnS/TiO2 heterostructure NTAs can be attributed to the enhanced electron-hole separation due to the effect of interfacial electric field in SnS/TiO2 heterostructure NTAs.

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Authors and Affiliations

  1. Key Laboratory of Advanced Technology of Materials (Ministry of Education of China), Superconductivity and New Energy R&D Center, Southwest Jiaotong University, Mail Stop 165#, Chengdu, Sichuan, 610031, China

    Yongfang Jia, Feng Yang, Fanggong Cai & Yong Zhao

  2. School of Materials Science and Engineering, University of New South Wales, Sydney, 2052, NSW, Australia

    Cuihua Cheng & Yong Zhao

Authors
  1. Yongfang Jia
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  2. Feng Yang
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  3. Fanggong Cai
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  4. Cuihua Cheng
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  5. Yong Zhao
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Correspondence to Feng Yang or Yong Zhao.

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Jia, Y., Yang, F., Cai, F. et al. Photoelectrochemical and charge transfer properties of SnS/TiO2 heterostructure nanotube arrays. Electron. Mater. Lett. 9, 287–291 (2013). https://doi.org/10.1007/s13391-013-2216-1

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  • DOI: https://doi.org/10.1007/s13391-013-2216-1

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