Bi-Assisted CdTe/CdS Hierarchical Nanostructure Growth for Photoconductive Applications

Kwang Heo, Hyungwoo Lee, Jikang Jian, Dong Jin Lee, Yongju Park, Changhee Lee, Byung Yang Lee, Seunghun Hong

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We developed a method to control the structure of CdTe nanowires by adopting Bi-mixed CdTe powder source to a catalyst-assisted chemical vapor deposition, which allowed us to fabricate CdTe/CdS hierarchical nanostructures. We demonstrated that diverse nanostructures can be grown depending on the combination of the Bi powder and film catalysts. As a proof of concepts, we grew CdTe/CdS branched nanowires for the fabrication of photodetectors. The hierarchical nanostructure-based photodetectors showed an improved photoresponsivity compared to the single CdTe nanowire (NW)-based photodetector. Our strategy can be a simple but powerful method for the development of advanced optoelectronic devices and other practical applications.

Original languageEnglish
Article number331
Pages (from-to)1-7
Number of pages7
JournalNanoscale Research Letters
Issue number1
Publication statusPublished - 2015 Dec 1

Bibliographical note

Publisher Copyright:
© 2015, Heo et al.


  • Chemical vapor deposition
  • Hierarchical structures
  • Nanowires
  • Photodetector

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics


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