TY - JOUR
T1 - CdCl2 activation annealing of CdTe microwires grown by close-spaced sublimation method
AU - Yang, Gwangseok
AU - Jung, Younghun
AU - Chun, Seungju
AU - Kim, Donghwan
AU - Kim, Ji Hyun
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
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U2 - 10.1149/2.0071409ssl
DO - 10.1149/2.0071409ssl
M3 - Article
SN - 2162-8742
VL - 3
SP - Q47-Q50
JO - ECS Solid State Letters
JF - ECS Solid State Letters
IS - 9
ER -