Energy band alignment of PbTe/CdTe(111) interface determined by ultraviolet photoelectron spectra using synchrotron radiation

doi:10.1088/1674-1056/19/7/077301

中国物理B ›› 2010, Vol. 19 ›› Issue (7): 77301-077301.doi: 10.1088/1674-1056/19/7/077301

Energy band alignment of PbTe/CdTe(111) interface determined by ultraviolet photoelectron spectra using synchrotron radiation

斯剑霄¹, 蔡春锋², 吴惠桢², 金树强², 张文华³, 许杨³, 朱骏发³

(1)College of Physics and Mathematics, Zhejiang Normal University, Jinhua 321004, China; (2)Department of Physics, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China; (3)National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China

修回日期:2009-12-16 出版日期:2010-07-15 发布日期:2010-07-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10974174 and 60676003).

Energy band alignment of PbTe/CdTe(111) interface determined by ultraviolet photoelectron spectra using synchrotron radiation

Cai Chun-Feng(蔡春锋)^a), Wu Hui-Zhen(吴惠桢)^a)†, Si Jian-Xiao(斯剑霄)^b), Jin Shu-Qiang(金树强)^a), Zhang Wen-Hua(张文华)^c), Xu Yang(许杨)^c), and Zhu Jun-Fa(朱骏发)^c)

^a Department of Physics, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China; ^b College of Physics and Mathematics, Zhejiang Normal University, Jinhua 321004, China; ^c National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China

Revised:2009-12-16 Online:2010-07-15 Published:2010-07-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10974174 and 60676003).

摘要/Abstract

摘要： The energy band structure with type-I alignment at the PbTe/CdTe(111) heterojunction interface is determined by the ultraviolet photoelectron spectrum using synchrotron radiation. The valence band and conduction band offsets are obtained to be 0.09±0.12 and 1.19±0.12 eV, respectively. These results are in agreement with theoretically predicted ones. The accurate determination of the valence band and conduction band offsets is useful for the fundamental understanding of the mid-infrared light emission from the PbTe/CdTe heterostructures and its application in devices.

Abstract: The energy band structure with type-I alignment at the PbTe/CdTe(111) heterojunction interface is determined by the ultraviolet photoelectron spectrum using synchrotron radiation. The valence band and conduction band offsets are obtained to be 0.09±0.12 and 1.19±0.12 eV, respectively. These results are in agreement with theoretically predicted ones. The accurate determination of the valence band and conduction band offsets is useful for the fundamental understanding of the mid-infrared light emission from the PbTe/CdTe heterostructures and its application in devices.

Key words: valence band offset, ultraviolet photoelectron spectra, synchrotron radiation

中图分类号: (Semiconductor compounds)

71.20.Nr

73.40.Lq (Other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions) 79.60.Bm (Clean metal, semiconductor, and insulator surfaces) 79.60.Jv (Interfaces; heterostructures; nanostructures) 78.67.De (Quantum wells)

蔡春锋, 吴惠桢, 斯剑霄, 金树强, 张文华, 许杨, 朱骏发. Energy band alignment of PbTe/CdTe(111) interface determined by ultraviolet photoelectron spectra using synchrotron radiation[J]. 中国物理B, 2010, 19(7): 77301-077301.

Cai Chun-Feng(蔡春锋), Wu Hui-Zhen(吴惠桢), Si Jian-Xiao(斯剑霄), Jin Shu-Qiang(金树强), Zhang Wen-Hua(张文华), Xu Yang(许杨), and Zhu Jun-Fa(朱骏发). Energy band alignment of PbTe/CdTe(111) interface determined by ultraviolet photoelectron spectra using synchrotron radiation[J]. Chin. Phys. B, 2010, 19(7): 77301-077301.

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Energy band alignment of PbTe/CdTe(111) interface determined by ultraviolet photoelectron spectra using synchrotron radiation

Energy band alignment of PbTe/CdTe(111) interface determined by ultraviolet photoelectron spectra using synchrotron radiation

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