전형탁
2018-09-12T06:39:53Z
2018-09-12T06:39:53Z
2016-08
RSC ADVANCES, v. 6, NO. 86, Page. 82900-82906
2046-2069
http://pubs.rsc.org/en/Content/ArticleLanding/2016/RA/C6RA15120E#!divAbstract
https://repository.hanyang.ac.kr/handle/20.500.11754/75126
Cu2O is a good candidate material for use as a p-type absorber in solar cells. Here, uniform ZnO nanorod (NR)-Cu2O core-shell structures are fabricated and their diode performances are studied. ZnO NRs are grown on fluorine-doped tin oxide (FTO) glass using a hydrothermal method. Cu2O is then deposited on the ZnO NRs using bottom-up RF magnetron sputtering. The crystal structures of the deposited ZnO NRs and Cu2O are characterized using X-ray diffraction. From secondary electron microscopy analysis, the uniform core-shell structure and its size are identified. UV-vis spectroscopy measurements show that the optical bandgap of the Cu2O in this structure is 2.3 eV. The diode characteristics of the fabricated nanostructures depend on the thickness of Cu2O; 2.7 mu m-thick Cu2O on ZnO NRs shows diode properties. Lastly, we propose a band alignment model based on X-ray photoelectron spectroscopy analysis and demonstrate a possible approach for fabricating CuxO-ZnO nanohybrids for further improvements to device efficiency, highlighting a need for interfacial band offset medication for oxide heterojunction solar cells.
This research was supported by the Basic Science Research Program (NRF-2014R1A2A1A11053174) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning, Korea.
en
ROYAL SOC CHEMISTRY
ATOMIC LAYER DEPOSITION
ENERGY CONVERSION
CU2O
PERFORMANCE
SEMICONDUCTOR
PHOTOVOLTAICS
INTERFACE
EFFICIENT
GROWTH
ARRAY
Uniform ZnO nanorod/Cu2O core-shell structured solar cells by bottom-up RF magnetron sputtering
Article
86
6
10.1039/c6ra15120e
82900-82906
RSC ADVANCES
Yoo, Il-Han
Kalanur, Shankara S.
Lee, Sang Yeon
Eom, Kiryung
Jeon, Hyeongtag
Seo, Hyungtak
2016010115
S
COLLEGE OF ENGINEERING[S]
DIVISION OF MATERIALS SCIENCE AND ENGINEERING
hjeon