The role of glutathione on shape control and photoelectrical property of cadmium sulfide nanorod arrays

Chunyan Yang, Sheng Liu, Mingrun Li, Xiuli Wang, Jian Zhu, Ruifeng Chong, Dong Yang, Wen Hua Zhang, Can Li

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Well-aligned CdS nanorod arrays (CdS NRs) with ∼100. nm in diameter and ∼700. nm in length were fabricated on FTO (fluorine-doped tin oxide) substrate by using glutathione as capping agents. The growth of CdS NRs was studied in details by exploring the roles of each active binding group in glutathione. The thiol group in glutathione plays an important role in forming a compact CdS nanocrystal film, upon which the nanorods grow subsequently via the synergetic effect of thiol and dicarboxyl groups in glutathione. The influence of surface passivation with glutathione on the photoelectrical property of CdS NRs was also tested. The results revealed that glutathione ligands encapsulated in the surfaces of CdS NRs act as insulating barriers between CdS NRs and solution, hindering charge transport. Hybrid photovoltaic cells of FTO/CdS NRs/P3HT (poly(3-hexylthiophene))/Au were then assembled. The performance of the photovoltaic devices was increased with increasing the length of the as-prepared CdS nanorods and further enhanced to the highest efficiency of 0.373% after the thermal sulfuration treatment.

Original languageEnglish (US)
Pages (from-to)58-65
Number of pages8
JournalJournal of Colloid And Interface Science
Volume393
Issue number1
DOIs
StatePublished - Mar 1 2013

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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