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Electrical and optical properties of Si-doped indium tin oxides as transparent electrode and anti-reflection coating for solar cells

Title
Electrical and optical properties of Si-doped indium tin oxides as transparent electrode and anti-reflection coating for solar cells
Author
김은규
Keywords
Anti-reflection coating; RF magnetron co-sputtering; Graded refractive index; Solar cell
Issue Date
2015-07
Publisher
ELSEVIER SCIENCE BV
Citation
CURRENT APPLIED PHYSICS, v. 15, NO 7, Page. 794-798
Abstract
We have studied the electrical and optical properties of Si-doped indium tin oxides (ITSOs) as transparent electrodes and anti-reflection coatings for Si-based solar cells. The ITSO thin films were obtained by co-sputtering of ITO and SiO2 targets under target power control. The resistivity of the ITSO thin films deposited at 0.625 in terms of power ratio (ITO/SiO2) were 391 Omega cm. In this condition, the ITSO thin films showed very high resistivity compared to sputted pure ITO thin films (1.08 x 10(-3) Omega cm). However, refractive index of ITSO thin films deposited at the same condition at 500 nm is somewhat lowered to 1.97 compared to ITO thin films (2.06). The fabricated graded refractive index AR coatings using ITO, ITSO, and SiO2 thin films kept over 80% of transmittance regardless of their thickness varing from 97 nm to 1196 nm because of their low extinction coefficient. As the AR coating with graded refractive indices using ITO, ITSO, and SiO2 layers was applied to general silicon-based solar cell, the current level increased nearly twice more than that of bare silicon solar cell without AR coating. (C) 2015 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S1567173915001248http://hdl.handle.net/20.500.11754/26556
ISSN
1567-1739; 1878-1675
DOI
10.1016/j.cap.2015.04.005
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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