Number：

01097006

Download

PDF

Name：

劉啟昌

Titles：

Associate professor

Author：

Chi-Chiuan Kuo Chi-Chang Liu Yuan-Ching Liang Yeuh-Yeong Liou Jia-Wen Chen Chung-Chin Lin

Paper name：

Fabrication and opto-electric properties of ITO/ZnO bilayer films on polyethersulfone substrates by ion beam-assisted evaporation

Name of activity：

Solar Energy Materials & Solar Cells

Keywords：indium tin oxide , polyethersulfone substrate ,ion beam-assisted evaporation,Resistivity,Transmittance

Abstract：

Transparent conducting oxides bilayer films stacked by one 130-nm-thick indium tin oxide (ITO) top layer and one 75-nm-thick zinc oxide (ZnO) buffer layer were grown onto polyethersulfone (PES) substrates by ion beam-assisted evaporation. The effects of ion energy and ZnO buffer layers on the structural and opto-electric properties of ITO films were initially investigated. The as-deposited ZnO buffer layer show wurtzite (0 0 2) preferred orientation on the PES substrates with ion beam assistance. The results of X-ray diffraction reveal a marked increase in the crystallinity of the ITO films which use ZnO as a buffer layer material. A drop of ~60% in electrical resistivity of the ITO film on the PES can be achieved by using ZnO buffer layer. The transmittance of the ITO/ZnO bilayer was not deteriorated due to the insertion of ZnO layer. The lowest electrical resistivity of 6.552 x 10^-4 Ω-cm associated with the transmittance of ~80% at the wavelength of 550nm can be obtained for the ITO film on the ZnO-coated PES at ion energy of 60eV. The ITO films on the ZnO-buffered PES with moderate control of ion energy have a promising future for the application of the contact layers for flexible solar cells.

Back