METHOD OF MANUFACTURING ZnO SEMICONDUCTOR LAYER FOR ELECTRONIC DEVICE AND THIN FILM TRANSISTOR INCLUDING THE ZnO SEMICONDUCTOR LAYER
First Claim
1. A method of manufacturing a ZnO semiconductor layer for an electronic device, the method comprising the steps of:
- (a) loading a substrate into a chamber;
(b) injecting a Zn precursor into the chamber to adsorb the Zn precursor on the substrate;
(c) injecting an inert gas or N2 gas into the chamber to remove the remaining Zn precursor;
(d) injecting an oxygen precursor into the chamber to cause a reaction between the oxygen precursor and the Zn precursor adsorbed on the substrate to form the ZnO semiconductor layer;
(e) injecting the N2 gas or inert gas into the chamber to remove the remaining oxygen precursor;
(f) repeating steps (a) through (e);
(g) repeatedly processing the surface treatment of the ZnO semiconductor layer using O2 plasma or O3;
(h) injecting the N2 gas or inert gas into the chamber to remove the remaining oxygen and Zn precursors; and
(i) repeating steps (a) through (h) to control the thickness of the ZnO semiconductor layer.
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Accused Products
Abstract
Provided are a method of manufacturing a ZnO semiconductor layer for an electronic device, which can control the size of crystals of the ZnO semiconductor layer and the number of carriers using a surface chemical reaction between precursors, and a thin film transistor (TFT) including the ZnO semiconductor layer. The method includes: (a) loading a substrate into a chamber; (b) injecting a Zn precursor into the chamber to adsorb the Zn precursor on the substrate; (c) injecting an inert gas or N2 gas into the chamber to remove the remaining Zn precursor; (d) injecting an oxygen precursor into the chamber to cause a reaction between the oxygen precursor and the Zn precursor adsorbed on the substrate to form the ZnO semiconductor layer; (e) injecting the N2 gas or inert gas into the chamber to remove the remaining oxygen precursor; (f) repeating steps (a) through (e); (g) repeatedly processing the surface treatment of the ZnO semiconductor layer using O2 plasma or O3; (h) injecting the N2 gas or inert gas into the chamber to remove the remaining oxygen and Zn precursors; and (i) repeating steps (a) through (h) to control the thickness of the ZnO semiconductor layer. In this method, a transparent TFT is formed using a transparent substrate to enable manufacture of a transparent display device, and a flexible display device can be manufactured using a flexible substrate. Also, the crystallinity of the ZnO semiconductor layer can be increased to improve the mobility of a TFT, and the number of carriers can be controlled to reduce a leakage current. Therefore, a ZnO semiconductor having excellent characteristics can be manufactured.
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Citations
12 Claims
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1. A method of manufacturing a ZnO semiconductor layer for an electronic device, the method comprising the steps of:
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(a) loading a substrate into a chamber; (b) injecting a Zn precursor into the chamber to adsorb the Zn precursor on the substrate; (c) injecting an inert gas or N2 gas into the chamber to remove the remaining Zn precursor; (d) injecting an oxygen precursor into the chamber to cause a reaction between the oxygen precursor and the Zn precursor adsorbed on the substrate to form the ZnO semiconductor layer; (e) injecting the N2 gas or inert gas into the chamber to remove the remaining oxygen precursor; (f) repeating steps (a) through (e); (g) repeatedly processing the surface treatment of the ZnO semiconductor layer using O2 plasma or O3; (h) injecting the N2 gas or inert gas into the chamber to remove the remaining oxygen and Zn precursors; and (i) repeating steps (a) through (h) to control the thickness of the ZnO semiconductor layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification