Photophysical and structural characterisation of in situ formed quantum dots

被引：19

作者：

Bansal, A. K. ^{[1
]}

Antolini, F. ^{[2
]}

Sajjad, M. T. ^{[1
]}

Stroea, L. ^{[2
]}

Mazzaro, R. ^{[3
,4
]}

Ramkumar, S. G. ^{[5
]}

Kass, K. -J. ^{[5
]}

Allard, S. ^{[5
]}

Scherf, U. ^{[5
]}

Samuel, I. D. W. ^{[1
]}

机构：

[1] Univ St Andrews, Sch Phys & Astron, Organ Semicond Ctr, St Andrews KY16 9SS, Fife, Scotland

[2] ENEA UTTMATF, I-48018 Faenza, RA, Italy

[3] Univ Bologna, Chem Dept G Ciamician, I-40126 Bologna, Italy

[4] CNR IMM Sect Bologna, I-40129 Bologna, Italy

[5] Berg Univ Wuppertal, Inst Polymertechnol, D-42097 Wuppertal, Germany

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2014年 / 16卷 / 20期

基金：

英国工程与自然科学研究理事会;

关键词：

ENERGY-TRANSFER; CHARGE SEPARATION; POLYMER; CDSE; NANOPARTICLES; NANOCRYSTALS; PRECURSORS; ELECTROLUMINESCENCE; DEVICES;

D O I：

10.1039/c4cp00727a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Conjugated polymer-semiconductor quantum dot (QD) composites are attracting increasing attention due to the complementary properties of the two classes of materials. We report a convenient method for in situ formation of QDs, and explore the conditions required for light emission of nanocomposite blends. In particular we explore the properties of nanocomposites of the blue emitting polymer poly[9,9-bis(3,5-di-tert-butylphenyl)-9H-fluorene] together with cadmium sulphide (CdS) and cadmium selenide (CdSe) precursors. We show the formation of emissive quantum dots of CdSe from thermally decomposed precursor. The dots are formed inside the polymer matrix and have a photoluminescence quantum yield of 7.5%. Our results show the importance of appropriate energy level alignment, and are relevant to the application of organic-inorganic systems in optoelectronic devices.

引用

页码：9556 / 9564

页数：9

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