Photoluminescence enhancement of colloidal quantum dots embedded in a microcavity

被引：5

作者：

Du Ling-Xiao ^{[1
]}

Hu Lian ^{[1
]}

Zhang Bing-Po ^{[1
]}

Cai Xi-Kun ^{[1
]}

Lou Teng-Gang ^{[1
]}

Wu Hui-Zhen ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Phys, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

来源：

ACTA PHYSICA SINICA | 2011年 / 60卷 / 11期

基金：

中国国家自然科学基金;

关键词：

CdSe quantum dots; photoluminescence enhancement; microcavity effect; LIGHT-EMITTING DEVICES; OPTICAL-PROPERTIES;

D O I：

10.7498/aps.60.117803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the study of CdSe quantum dot microcavity formed between two distributed Bragg reflectors (DBRs). The active region consisting of CdSe quantum dots is embedded in PMMA. We use the transfer matrix method (TMM) to simulate the reflectivity spectrum of the microcavity. We demonstrate an enhancement of the spontaneous emission from the colloidal CdSe quantum dots in the microcavily. After embedding the QDs in the cavity, the full width at half maximum (FWHM) is narrowed to 7.5 nm compared with 27.9 nm of QDs in free space. The emission of the quantum dots is enhanced by a factor of 3.7 due to the microcavity effect.

引用

页数：5

共 18 条

[1] Titanate Nanosheets as High Refractive Layer in Vertical Microcavity Incorporating Semiconductor Quantum Dots
Antonello, Alessandro
Guglielmi, Massimo
Bello, Valentina
Mattei, Giovanni
Chiasera, Alessandro
Ferrari, Maurizio
Martucci, Alessandro
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (43): : 18423 - 18428
[2] Top-emitting organic light-emitting devices with cavity effect
Cao Jin
Liu Xiang
Zhang Xiao-Bo
Wei Fu-Xiang
Zhu Wen-Qing
Jiang Xue-Yin
Zhang Zhi-Lin
Xu Shao-Hong
[J]. ACTA PHYSICA SINICA, 2007, 56 (02) : 1088 - 1092
[3] Colorimetrical study of colloidal CdSe quantum dots
Chen, Ding-An
Shen, Li
Zhang, Jia-Yu
Cui, Yi-Ying
[J]. ACTA PHYSICA SINICA, 2007, 56 (11) : 6340 - 6344
[4] Photoinduced fluorescence enhancement and energy transfer effects of quantum dots porous silicon
DeLouise, Lisa A.
Ouyang, Huimin
[J]. PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 7, 2009, 6 (07): : 1729 - +
[5] Optical microcavities using highly luminescent films of semiconductor nanocrystals
Finlayson, CE
Ginger, DS
Greenham, NC
[J]. APPLIED PHYSICS LETTERS, 2000, 77 (16) : 2500 - 2502
[6] The effect of annealing and photoactivation on the optical transitions of band-band and surface trap states of colloidal quantum dots in PMMA
Hu, Lian
Wu, Huizhen
Du, Lingxiao
Ge, Hongying
Chen, Xin
Dai, Ning
[J]. NANOTECHNOLOGY, 2011, 22 (12)
[7] Method for preparation of semiconductor quantum-rod lasers in a cylindrical microcavity
Kazes, M
Lewis, DY
Banin, U
[J]. ADVANCED FUNCTIONAL MATERIALS, 2004, 14 (10) : 957 - 962
[8] LAO YF, 2005, THESIS CHINESE ACAD
[9] LIU BL, 2000, CHIN J SEMICOND, V22, P335
[10] Size-dependent optical properties and carriers dynamics in CdSe/ZnS quantum dots
Department of Physics, Shanghai University, Shanghai 200444, China
不详
不详
[J]. Chin. Phys., 2008, 4 (1280-1285):

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