The band gap regulation of HgxCd1-xTe quantum dots by ion exchange and their near-infrared self-absorption characteristics

被引：0
|
作者：
Fang Shi-Yu [1 ]
Liu Zhen-Yu [1 ]
Jin Jia-Jie [1 ]
Shi Ji-Chao [1 ]
Fang Yong-Zheng [1 ]
Sun Chang-Hong [2 ]
Ye Zhen-Hua [2 ]
Liu Yu-Feng [1 ,2 ]
机构：
[1] Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Tech Phys, Key Lab Infrared Imaging Mat & Devices, Shanghai 200083, Peoples R China
来源：
JOURNAL OF INFRARED AND MILLIMETER WAVES | 2022年 / 41卷 / 02期
关键词：
HgxCd1-xTe QDs; ion exchange; near-infrared; self-absorption; AG2S; PBS;
D O I：
10.11972/j.issn.1001-9014.2022.02.001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper???monodispersed CdTe quantum dots are synthesized by soft chemical method.Meanwhile???mer???cury cadmium telluride???HgxCd1-xTe???quantum dots with the quasi continuous visible to near-infrared spectrum are pre???pared by ion exchange adjusting the concentration of Hg2+.The variable temperature photoluminescence and self-absorp???tion characteristics of near-infrared Hg0.33Cd0.67Te quantum dots are deeply analyzed.The results indicate that the fluores???cence intensity of HgxCd1-xTe quantum dots decreases linearly with the increase of temperature???0 similar to 100 degrees C???.The spectralline broad and the peak position has a red-shift???12nm???.The partial overlap of absorption and emission spectra of quan???tum dots leads to self-absorption.The increase of self-absorption results in decrease of photoluminescence intensity while the concentration of quantum dots increases
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页码：377 / 383
页数：7
相关论文
共 22 条
  • [1] Antoszewski J., 2015, ECS Transactions, V69, P61, DOI 10.1149/06914.0061ecst
  • [2] Capper P., 2010, MERCURY CADMIUM TELL
  • [3] Major Electronic Transition Shift from Bandgap to Localized Surface Plasmon Resonance in CdXHg1-XSe Alloy Nanocrystals
    Choi, Dongsun
    Yoon, Bitna
    Kim, Dae-Kyu
    Baik, Hionsuck
    Choi, Jong-Ho
    Jeong, Kwang Seob
    [J]. CHEMISTRY OF MATERIALS, 2017, 29 (19) : 8548 - 8554
  • [4] Near-infrared Photoluminescent Ag2S Quantum Dots from a Single Source Precursor
    Du, Yaping
    Xu, Bing
    Fu, Tao
    Cai, Miao
    Li, Feng
    Zhang, Yan
    Wang, Qiangbin
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (05) : 1470 - +
  • [5] Development of CuInSe2 nanocrystal and nanoring inks for low-cost solar cells
    Guo, Qiiie
    Kim, Suk Jun
    Kar, Mahaprasad
    Shafarman, William N.
    Birkmire, Robert W.
    Stach, Eric A.
    Agrawal, Rakesh
    Hillhouse, Hugh W.
    [J]. NANO LETTERS, 2008, 8 (09) : 2982 - 2987
  • [6] Flexible and efficient perovskite quantum dot solar cells via hybrid interfacial architecture
    Hu, Long
    Zhao, Qian
    Huang, Shujuan
    Zheng, Jianghui
    Guan, Xinwei
    Patterson, Robert
    Kim, Jiyun
    Shi, Lei
    Lin, Chun-Ho
    Lei, Qi
    Chu, Dewei
    Tao, Wan
    Cheong, Soshan
    Tilley, Richard D.
    Ho-Baillie, Anita W. Y.
    Luther, Joseph M.
    Yuan, Jianyu
    Wu, Tom
    [J]. NATURE COMMUNICATIONS, 2021, 12 (01)
  • [7] Colloidal quantum dot photodetectors
    Konstantatos, Gerasimos
    Sargent, Edward H.
    [J]. INFRARED PHYSICS & TECHNOLOGY, 2011, 54 (03) : 278 - 282
  • [8] Hot Electron Transfer from CdTe Quantum Dot (QD) to Porphyrin and Ultrafast Electron Transfer from Porphyrin to CdTe QD in CdTe QD-Tetrakis(4-carboxyphenyl)porphyrin Nanocomposites
    Mandal, Haraprasad
    Chakali, Madhu
    Venkatesan, Munisamy
    Bangal, Prakriti Ranjan
    [J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2021, 125 (08): : 4750 - 4763
  • [9] Solution-processed PbS quantum dot infrared photodetectors and photovoltaics
    McDonald, SA
    Konstantatos, G
    Zhang, SG
    Cyr, PW
    Klem, EJD
    Levina, L
    Sargent, EH
    [J]. NATURE MATERIALS, 2005, 4 (02) : 138 - 142
  • [10] Structural and spectroscopic investigations of CdS/HgS/CdS quantum-dot quantum wells
    Mews, A
    Kadavanich, AV
    Banin, U
    Alivisatos, AP
    [J]. PHYSICAL REVIEW B, 1996, 53 (20) : 13242 - 13245
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