Properties of p-type N-doped Cu2O thin films prepared by reactive sputtering
- Authors
- Jung, Yu Sup; Choi, Hyung Wook; Kim, Kyung Hwan
- Issue Date
- Nov-2014
- Publisher
- IOP PUBLISHING LTD
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS, v.53, no.11
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS
- Volume
- 53
- Number
- 11
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/12174
- DOI
- 10.7567/JJAP.53.11RA10
- ISSN
- 0021-4922
- Abstract
- We have investigated the electrical, optical, and structural properties of p-type nitrogen (N)-doped Cu2O thin films prepared at various nitrogen gas flow rates for application in heterojunction solar cells. The N-doped Cu2O thin films were fabricated by facing-target reactive sputtering. The hole concentration of the N-doped Cu2O thin films was affected by N-2 gas flow rate. With increasing N-2 gas flow rate from 0 to 0.5 sccm, the hole concentration and mobility of N-doped Cu2O films increased sharply. The resistivity, hole concentration, and mobility of the N-doped Cu2O films prepared at a N-2 gas flow rate of 4 sccm were 1.9 Omega.cm, 2.0 x 10(18)cm(-3), and 3.4 cm(2).V-1.s(-1), respectively. The N-doped Cu2O films showed Cu2O(111) and Cu2O(200) diffraction peaks. Cu2O(200) diffraction peak intensity increased slightly with N-2 gas flow rate. The Cu2O(200) peaks were stronger at a N-2 gas flow rate of 4 sccm than at other gas flow rates. (C) 2014 The Japan Society of Applied Physics
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