Structural tuning of color chromaticity through nonradiative energy transfer by interspacing CdTe nanocrystal monolayers

被引：36

作者：

Cicek, Neslihan ^{[1
]}

Nizamoglu, Sedat ^{[1
]}

Ozel, Tuncay ^{[1
]}

Mutlugun, Evren ^{[1
]}

Karatay, Durmus Ugur ^{[1
]}

Lesnyak, Vladimir ^{[2
]}

Otto, Tobias ^{[2
]}

Gaponik, Nikolai ^{[2
]}

Eychmueller, Alexander ^{[2
]}

Demir, Hilmi Volkan ^{[1
]}

机构：

[1] Bilkent Univ, Inst Mat Sci & Nanotechnol, Nanotechnol Res Ctr, Dept Elect & Elect Engn,Dept Phys, TR-06800 Ankara, Turkey

[2] Tech Univ Dresden, D-01062 Dresden, Germany

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 06期

关键词：

cadmium compounds; colour; II-VI semiconductors; nanostructured materials; optical tuning; photoluminescence; LIGHT-EMITTING-DIODES; QUANTUM DOTS; BILAYERS; SOLIDS; FILMS;

D O I：

10.1063/1.3079679

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We proposed and demonstrated architectural tuning of color chromaticity by controlling photoluminescence decay kinetics through nonradiative Forster resonance energy transfer in the heterostructure of layer-by-layer spaced CdTe nanocrystal (NC) solids. We achieved highly sensitive tuning by precisely adjusting the energy transfer efficiency from donor NCs to acceptor NCs via controlling interspacing between them at the nanoscale. By modifying decay lifetimes of donors from 12.05 to 2.96 ns and acceptors from 3.68 to 14.57 ns, we fine-tuned chromaticity coordinates from (x,y)=(0.575,0.424) to (0.632, 0.367). This structural adjustment enabled a postsynthesis color tuning capability, alternative or additive to using the size, shape, and composition of NCs.

引用

页数：3

共 22 条

[1]

Banin U, 2008, NAT PHOTONICS, V2, P209, DOI 10.1038/nphoton.2008.40

[2] Spectrally resolved dynamics of energy transfer in quantum-dot assemblies: Towards engineered energy flows in artificial materials [J].