Asymmetric interface band alignments of Cu2O/ZnO and ZnO/Cu 2O heterojunctions

被引：0
|
作者：
机构：
[1] Yang, Meijia
[2] Zhu, Liping
[3] Li, Yaguang
[4] Cao, Ling
[5] Guo, Yanmin
来源：
Zhu, L. (zlpl@zju.edu.cn) | 1600年 / Elsevier Ltd卷 / 578期
关键词：
X-ray photoelectron spectroscopy was used to investigate the valence-band offsets (VBOs) of the Cu2O-ZnO heterojunctions fabricated by magnetron sputtering. A significant forward-backward asymmetry was observed in the band alignments of Cu2O/ZnO-ZnO/Cu2O heterojunctions. The valence band offsets of 2.91 eV and 2.52 eV were achieved in Cu 2O/ZnO and ZnO/Cu2O heterojunctions respectively. The asymmetry was attributed to the lattice distortion of the Cu2O at the interface of Cu2O/ZnO heterojunction. The compressed Cu2O lattices lead to the upward shift of the top of the valence-band of Cu 2O; and thus the measured VBO of Cu2O/ZnO is larger than that of ZnO/Cu2O. Considering the band alignments; the ZnO/Cu 2O structure is expected to have more advantage in photovoltaic application than Cu2O/ZnO structure. © 2013 Elsevier B.V. All rights reserved;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
相关论文
共 50 条
  • [31] Enhanced photoresponse of Cu2O/ZnO heterojunction with piezo-modulated interface engineering
    Pei Lin
    Xiang Chen
    Xiaoqin Yan
    Zheng Zhang
    Haoge Yuan
    Peifeng Li
    Yanguang Zhao
    Yue Zhang
    Nano Research, 2014, 7 : 860 - 868
  • [32] Efficiency enhancement of ZnO/Cu2O solar cells with well oriented and micrometer grain sized Cu2O films
    Zang, Zhigang
    APPLIED PHYSICS LETTERS, 2018, 112 (04)
  • [33] Influence of Cu2O surface treatment on the photovoltaic properties of Al-doped ZnO/Cu2O solar cells
    Nishi, Yuki
    Miyata, Toshihiro
    Nomoto, Jun-ichi
    Minami, Tadatsugu
    THIN SOLID FILMS, 2012, 520 (10) : 3819 - 3822
  • [34] Cu2O/ZnO heterojunction thin-film solar cells: the effect of electrodeposition condition and thickness of Cu2O
    Tran, Man Hieu
    Cho, Jae Yu
    Sinha, Soumyadeep
    Gang, Myeng Gil
    Heo, Jaeyeong
    THIN SOLID FILMS, 2018, 661 : 132 - 136
  • [35] A QUANTUM CHEMICAL STUDY OF ZNO, CU ZNO, CU2O, AND CUO CLUSTERS AND CO CHEMISORPTION ON ZNO(0001), CUZNO(0001), AND CU/ZNO(0001) SURFACES
    RODRIGUEZ, JA
    CAMPBELL, CT
    JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (27): : 6648 - 6658
  • [36] Photocatalytic property of ZnO microrods modified by Cu2O nanocrystals
    Liu, Kejia
    Zhang, Junying
    Gao, Hong
    Xie, Tengfeng
    Wang, Dejun
    JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 552 : 299 - 303
  • [37] Fabrication and optical properties of Cu2O–ZnO composite opal
    Youjun Chen
    Hongwei Yan
    Beifang Yang
    Yan Lv
    Meiwang Wen
    Jiao Xu
    Min Wu
    Xuelian Zhu
    Zhengping Fu
    Applied Physics A, 2010, 98 : 467 - 472
  • [38] Progress of Cu2O/ZnO oxide heterojunction solar cells
    Chen Xin-Liang
    Chen Li
    Zhou Zhong-Xin
    Zhao Ying
    Zhang Xiao-Dan
    ACTA PHYSICA SINICA, 2018, 67 (11)
  • [39] Moisture Sensing Application of Cu2O Doped ZnO Nanocomposites
    Pandey, N. K.
    Tiwari, Karunesh
    Roy, Akash
    IEEE SENSORS JOURNAL, 2011, 11 (09) : 2142 - 2148
  • [40] EXCITATION MECHANISM AND INFRARED RADIATION OF ZNO-CU2O HETEROJUNCTIONS
    DRAPAK, IT
    IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII FIZIKA, 1976, (06): : 45 - 49
12345