Shell layer dependence of photoblinking in CdSe/ZnSe/ZnS quantum dots

被引：22

作者：

Isnaeni ^{[1
,2
]}

Kim, Kyoo H. ^{[1
,2
]}

Nguyen, Dinh L. ^{[3
]}

Lim, Hanjo ^{[3
]}

Pham Thu Nga ^{[4
]}

Cho, Yong-Hoon ^{[1
,2
]}

机构：

[1] Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol WCU, Dept Phys, Taejon 305701, South Korea

[2] Korea Adv Inst Sci & Technol, KI NanoCentury, Taejon 305701, South Korea

[3] Ajou Univ, Dept Elect & Comp Engn, Suwon 443749, South Korea

[4] Vietnam Acad Sci & Technol, Inst Mat Sci, Hanoi 10000, Vietnam

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 01期

关键词：

SEMICONDUCTOR NANOCRYSTALS; BLINKING; RECOMBINATION; INTERMITTENCY; ENVIRONMENT; EMISSION; EMITTERS;

D O I：

10.1063/1.3533401

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on the influence of shell addition, shell thickness, and shape of CdSe/ZnSe/ZnS colloidal quantum dots (QDs) on luminescence, decay lifetime, and photoblinking. The addition of shell layers appreciably increased (decreased) the time interval of on (off) time, while the increase of outer shell thickness only increases the time interval of on-time. The photoblinking was suppressed as the QD shape changes from spherical to ellipsoidal probably due to the reduction of Auger process as the wave function degeneracy of the identical states of the two holes is lifted. We also suggest that interface traps might enhance the Auger recombination. (C) 2011 American Institute of Physics. [doi:10.1063/1.3533401]

引用

页数：3

共 50 条

[31] Low temperature, green synthesis of CdSe/ZnS and CdSe/CdZnS core/shell quantum dots
Zhu, Huiguang
Prakash, Arjun
Benoit, Denise
Jones, Christopher
Colvin, Vicki
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2009, 237
[32] Characterization of the ZnSe/ZnS core shell quantum dots synthesized at various temperature conditions and the water soluble ZnSe/ZnS quantum dot
Hwang, CS
Cho, IH
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, 2005, 26 (11) : 1776 - 1782
[33] Measurement of the separation dependence of resonant energy transfer between CdSe/ZnS core/shell nanocrystallite quantum dots
Shafiei, Farbod
Ziama, Sannah P.
Curtis, Eric D.
Decca, Ricardo S.
PHYSICAL REVIEW B, 2011, 84 (07)
[34] Preparation of a ZnS Shell on CdSe Quantum Dots Using a Single-Molecular ZnS Precursor
Dethlefsen, Johannes R.
Dossing, Anders
NANO LETTERS, 2011, 11 (05) : 1964 - 1969
[35] Fluorescence quantum efficiency of CdSe/ZnS quantum dots embedded in biofluids: pH dependence
Pilla, Viviane
Alves, Leandro P.
de Santana, Juliana F.
da Silva, Leandro G.
Ruggiero, Reinaldo
Munin, Egberto
JOURNAL OF APPLIED PHYSICS, 2012, 112 (10)
[36] Effect of ZnS shell formation on the confined energy levels of ZnSe quantum dots
Lad, Amit D.
Mahamuni, Shailaja
PHYSICAL REVIEW B, 2008, 78 (12)
[37] Synthesis of CdSe/ZnSe Core/Shell and CdSe/ZnSe/ZnS Core/Shell/Shell Nanocrystals: Surface-Ligand Strain and CdSe-ZnSe Lattice Strain
Zhang, Jiakuan
Li, Chuyue
Li, Jiongzhao
Peng, Xiaogang
CHEMISTRY OF MATERIALS, 2023, 35 (17) : 7049 - 7059
[38] Photon Antibunching in Small Clusters of CdSe/ZnS Core/Shell Quantum Dots
Whitcomb, Kevin J.
Geisenhoff, Jessica Q.
Ryan, Duncan P.
Gelfand, Martin P.
Van Orden, Alan
JOURNAL OF PHYSICAL CHEMISTRY B, 2015, 119 (29): : 9020 - 9028
[39] Photoluminescence of core-shell CdSe/ZnS quantum dots of different sizes
Torchynska, T. V.
Douda, J.
Pena Sierra, R.
PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, SUPPL 1, 2009, 6 : S143 - S145
[40] Ultrafast Hole Transfer Dynamics in InP/ZnSe/ZnS Core/Shell/Shell Quantum Dots
Zeng, Shijia
Li, Zhenbo
Tan, Wenjiang
Si, Jinhai
Li, Yuren
Hou, Xun
JOURNAL OF PHYSICAL CHEMISTRY C, 2023, 127 (22): : 10609 - 10616

← 1 2 3 4 5 →