Size-tunable infrared (1000-1600 nm) electroluminescence from PbS quantum-dot nanocrystals in a semiconducting polymer

被引：359

作者：

Bakueva, L ^{[1
]}

Musikhin, S

Hines, MA

Chang, TWF

Tzolov, M

Scholes, GD

Sargent, EH

机构：

[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

[2] Univ Toronto, Lash Miller Chem Labs, Toronto, ON M5S 3H6, Canada

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 17期

关键词：

D O I：

10.1063/1.1570940

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nanocomposites consisting of PbS nanocrystals in a conjugated polymer matrix were fabricated. We report results of photo- and electroluminescence across the range of 1000 to 1600 nm with tunability obtained via the quantum-size effect. The intensity of electroluminescence reached values corresponding to an internal quantum efficiency up to 1.2%. We discuss the impact of using different-length capping ligands on the transfer of excitations from polymer matrix to nanocrystals. (C) 2003 American Institute of Physics.

引用

页码：2895 / 2897

页数：3

共 16 条

[1] Agranovich V.M., 1982, Electronic Excitation Energy Transfer in Condensed Matter
[2] Anisotropy-induced optical transitions in PbSe and PbS spherical quantum dots
Andreev, AD
Lipovskii, AA
[J]. PHYSICAL REVIEW B, 1999, 59 (23): : 15402 - 15404
[3] AUXIER J, 2000, TOPS, V39, P385
[4] ANGULAR-DEPENDENCE OF THE EMISSION FROM A CONJUGATED POLYMER LIGHT-EMITTING DIODE - IMPLICATIONS FOR EFFICIENCY CALCULATIONS
GREENHAM, NC
FRIEND, RH
BRADLEY, DDC
[J]. ADVANCED MATERIALS, 1994, 6 (06) : 491 - 494
[5] High-external-quantum-efficiency organic light-emitting devices
Gu, G
Garbuzov, DZ
Burrows, PE
Venkatesh, S
Forrest, SR
Thompson, ME
[J]. OPTICS LETTERS, 1997, 22 (06) : 396 - 398
[6] HINES MA, UNPUB
[7] LI HP, 2000, 2000 C LAS EL EUR
[8] PbS-polymer nanocomposite with third-order nonlinear optical response in femtosecond regime
Liu, B
Li, HP
Chew, CH
Que, WX
Lam, YL
Kam, CH
Gan, LM
Xu, GQ
[J]. MATERIALS LETTERS, 2001, 51 (06) : 461 - 469
[9] Synthesis, optical spectroscopy and ultrafast electron dynamics of PbS nanoparticles with different surface capping
Patel, AA
Wu, FX
Zhang, JZ
Torres-Martinez, CL
Mehra, RK
Yang, Y
Risbud, SH
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (49): : 11598 - 11605
[10] Optical and conductivity properties of PbS nanocrystals in amorphous zirconia sol-gel films
Sashchiuk, A
Lifshitz, E
Reisfeld, R
Saraidarov, T
Zelner, M
Willenz, A
[J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2002, 24 (01) : 31 - 38

← 1 2 →