Heteroepitaxial growth of Cu2O films on Nb-SrTiO3substrates and their photovoltaic properties
Wang, K.1,2; Gao, W.1; Zheng, H.W.1; Li, F.Z.1; Zhu, M.S.1; Yang, G.1; Yue, G.T.1; Liu, Y.K.3; Zheng, R.K.2
Source PublicationCeramics International
AbstractIn this paper, p-type Cu2O thin films have been epitaxially grown on n-type semiconducting (001) oriented Nb-SrTiO3(NSTO) substrates with different Nb doping concentration by pulsed laser deposition technique. X-ray diffraction and high resolution transmission electron microscopy reveal a cube-on-cube epitaxial relationship between Cu2O and NSTO. It is found that the deposition temperature, the thickness of Cu2O films and the Nb doping concentration of NSTO substrates have critical impact on the photovoltaic (PV) properties of the Cu2O/NSTO heterojunction devices. A maximum PV performance is observed in ITO/Cu2O/NSTO device when the deposition temperature, film thickness and Nb doping concentration of NSTO are 550 °C, 76 nm, and 0.7 wt% NSTO, respectively. The optimized PV output corresponds to the open circuit voltage, short-circuit current density, fill factor and photovoltaic conversion efficiency about 0.45 V, 1.1 mA/cm2, 46% and 0.23%respectively. This work offers an insight into the strategy for developing and designing novel optoelectronics of NSTO-based oxide heterostructures. © 2017 Elsevier Ltd and Techna Group S.r.l.
EI Accession Number20174204272022
EI KeywordsNiobium
EI Classification Number549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 712.1 Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits - 741.3 Optical Devices and Systems - 744.1 Lasers, General - 744.9 Laser Applications - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds
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Document Type期刊论文
Affiliation1.Henan Key Laboratory of Photovoltaic Materials, School of Physics and Electronics, Henan University, Kaifeng; 475004, China;
2.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
3.Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, Hong Kong
Recommended Citation
GB/T 7714
Wang, K.,Gao, W.,Zheng, H.W.,et al. Heteroepitaxial growth of Cu2O films on Nb-SrTiO3substrates and their photovoltaic properties[J]. Ceramics International,2017,43(18):16232-16237.
APA Wang, K..,Gao, W..,Zheng, H.W..,Li, F.Z..,Zhu, M.S..,...&Zheng, R.K..(2017).Heteroepitaxial growth of Cu2O films on Nb-SrTiO3substrates and their photovoltaic properties.Ceramics International,43(18),16232-16237.
MLA Wang, K.,et al."Heteroepitaxial growth of Cu2O films on Nb-SrTiO3substrates and their photovoltaic properties".Ceramics International 43.18(2017):16232-16237.
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