CdCl2 activation annealing of CdTe microwires grown by close-spaced sublimation method

Gwangseok Yang, Younghun Jung, Seungju Chun, Donghwan Kim, Ji Hyun Kim

Research output: Contribution to journalArticlepeer-review

Abstract

We report on the effect of CDC CDCl2 treatment on CdTe microwires that were grown using a simple close-spaced sublimation method. Au particles were used for catalytic vapor-liquid-solid growth of the CdTe microwires with a direct band-gap of∼1.49 eV. The optical, morphological and structural properties of the CdTe microwires were characterized after post-growth CDC CDCl2 treatment at 385°C for 15∼ 90 min by scanning electron microscopy, X-ray diffraction, μ-Raman scattering, μ-photoluminescence spectroscopy and focused-ion-beam techniques. New grains nucleated at the surface of CdTe microwires were observed after CDC CDCl2 treatment. The orientations of the CdTe microwires and of the underlying CdTe thin films became more randomized with increasing durations of CDC CDCl2 treatment. However, the optical properties were hardly affected by CDC CDCl2 treatment. Post-growth CDC CDCl2 activation on CdTe microwires is a critical process for high efficiency CdTe microwire-based solar cells.

Original languageEnglish
Pages (from-to)Q47-Q50
JournalECS Solid State Letters
Volume3
Issue number9
DOIs
Publication statusPublished - 2014

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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