Evolution of self-assembled type-II ZnTe/ZnSe nanostructures: Structural and electronic properties

被引：0
|
作者：
机构：
[1] Kim, S.J.
[2] Juang, B.-C.
[3] Wang, W.
[4] Jokisaari, J.R.
[5] Chen, C.-Y.
[6] Phillips, J.D.
[7] Pan, X.Q.
来源：
Phillips, J.D. (jphilli@umich.edu) | 1600年 / American Institute of Physics Inc.卷 / 111期
关键词：
The strain-mediated evolution of epitaxial ZnTe/ZnSe quantum structures is studied at the atomic scale using spherical aberration-corrected scanning transmission electron microscopy; coupled with electronic properties characterized by photoluminescence spectroscopy. The growth development of these buried quantum dots clearly demonstrates a homogeneous profile with similar pyramidal geometry rather than bi-modal distribution; contradicting prior reports on ZnTe/ZnSe quantum dots. The result is consistent with atomistic theoretical calculations on strain distribution and electronic structure of a modeled quantum dot of similar geometry using a valence force field model. It is also found that the transition from 2-D islands to 3-D quantum dots involves thermally activated carrier transfer process and follows up with formation of extended defects at the quantum dot surface; acting as an effective source for remnant misfit strain relaxation. The new physical understanding concerning the growth of self-assembled ZnTe/ZnSe quantum dots embedded in the active regions provides important information for the measures to control the properties of buried ZnTe quantum dots; setting up a key footstep in developing novel materials of energy conversion. © 2012 American Institute of Physics;
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
  • [21] Properties of self-assembled nanostructures: general discussion
    Reguera, Javier
    Malachosky, Edward
    Martin, Matthew
    Tebbe, Moritz
    Law, Bruce
    Isa, Lucio
    Moehwald, Helmuth
    Liu, Yangwei
    Bresme, Fernando
    Ganeshan, Dhanavel
    Sorensen, Christopher
    Ghosh, Suvojit
    Fery, Andreas
    Kral, Petr
    Widmer-Cooper, Asaph
    Graf, Christina
    Gallego, Almudena
    Schiffrin, David
    Korgel, Brian
    Okram, Gunadhor
    Sankaranarayanan, Subramanian
    Wang, Yifan
    Teranishi, Toshiharu
    Salerno, K. Michael
    McBride, Sean
    Lin, Xiao-Min
    FARADAY DISCUSSIONS, 2015, 181 : 365 - 381
  • [22] Robust Coherent Magneto-optical Properties of Columnar Type-II Quantum Dots in ZnTe/ZnSe and ZnMnTe/ZnSe Systems
    Whiteside, V. R.
    Sellers, I. R.
    Eginligil, M.
    Oszwaldowski, R.
    Petrou, A.
    Zutic, I.
    Chou, W-C.
    Kuskovsky, I. L.
    Petukhov, A. G.
    Govorov, A. O.
    McCombe, B. D.
    PHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, 2011, 1399
  • [23] Growth of self-assembled (Zn)CdSe nanostructures on ZnSe by migration enhanced epitaxy
    Leonardi, K
    Hommel, D
    Meyne, C
    Zettler, JT
    Richter, W
    JOURNAL OF CRYSTAL GROWTH, 1999, 201 : 1222 - 1225
  • [24] Electrical characterisation of local electronic properties of self-assembled semiconductor nanostructures using AFM
    Decossas, S
    Marchand, JJ
    Brémond, G
    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2004, 23 (3-4): : 396 - 400
  • [25] Resonant photoluminescence and excitation spectroscopy of CdSe/ZnSe and CdTe/ZnTe self-assembled quantum dots
    Nguyen, TA
    Mackowski, S
    Rho, H
    Jackson, HE
    Smith, LM
    Wrobel, J
    Fronc, K
    Kossut, J
    Karczewski, G
    Dobrowolska, M
    Furdyna, J
    QUANTUM CONFINED SEMICONDUCTOR NANOSTRUCTURES, 2003, 737 : 71 - 76
  • [26] Formation and optical properties of CdTe self-assembled quantum rings with electronic states embedded in ZnTe barriers
    Kim, TW
    Lee, EH
    Lee, KH
    Kim, JS
    Park, HL
    APPLIED PHYSICS LETTERS, 2004, 84 (04) : 595 - 597
  • [27] Effects of the Capping and the Wetting Layers on the Electronic Properties of Self-assembled Pyramidal CdTe/ZnTe Quantum Dots
    Hong, Woo-Pyo
    Park, Seoung-Hwan
    JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2009, 55 (04) : 1607 - 1614
  • [28] Optical properties of self-assembled supracolloidal nanostructures for metamolecules
    Benson, Zackery
    Dias, Mariama
    Gong, Chen
    Leite, Marina
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2017, 254
  • [29] Transmission electron microscopy investigation of structural properties of self-assembled CdSe/ZnSe quantum dots
    Kirmse, H
    Schneider, R
    Rabe, M
    Neumann, W
    Henneberger, F
    APPLIED PHYSICS LETTERS, 1998, 72 (11) : 1329 - 1331
  • [30] An investigation of exciton behavior in type-II self-assembled GaSb/GaAs quantum dots
    Qiu, Feng
    Qiu, Weiyang
    Li, Yulian
    Wang, Xingjun
    Zhang, Yun
    Zhou, Xiaohao
    Lv, Yingfei
    Sun, Yan
    Deng, Huiyong
    Hu, Shuhong
    Dai, Ning
    Wang, Chong
    Yang, Yu
    Zhuang, Qiandong
    Hayne, Manus
    Krier, A.
    NANOTECHNOLOGY, 2016, 27 (06)
12345