Fabrication of single phase p-CuInSe2 nanowire arrays by electrodeposited into anodic alumina templates

Yu Song Cheng, Hao Jan Lang, Mau-phon Houng

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Single-phase CuInSe2 nanowire (NW) arrays were prepared at various pH values in a heated electrolyte by using pulse electrodeposition techniques and an anodized aluminum oxide template. X-ray diffraction showed that the CuInSe2 NW nucleation mechanism received H+ constraints when the NWs were deposited at pH 1.7 with a (112) orientation and annealed at 550 °C. The CuInSe2 NW band gap was determined to be approximately 1 eV through optical measurements. Transmission electron microscopy showed that at the pH value of 1.7, small particles of the single-phase CuInSe2 NWs aligned along the crystallographic direction are nucleated to form large particles. Scanning electron microscopy revealed that the NW diameter and the length were 80 nm and 2.3 μm, respectively. From Mott-Schottky and Ohmic contact plots, the CuInSe2 NWs were found to be p-type semiconductors, and their work function was estimated to be approximately 4.69 eV.

Original languageEnglish
Article number162103
JournalApplied Physics Letters
Volume107
Issue number16
DOIs
Publication statusPublished - 2015 Oct 19

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Fabrication of single phase p-CuInSe<sub>2</sub> nanowire arrays by electrodeposited into anodic alumina templates'. Together they form a unique fingerprint.

  • Cite this