White-light emission from a blend of CdSeS nanocrystals of different Se:S ratio

被引：72

作者：

Ali, Moazzam

Chattopadhyay, Soma

Nag, Angshuman

Kumar, Akshay

Sapra, Sameer

Chakraborty, S.

Sarma, D. D. ^{[1
]}

机构：

[1] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

[2] Cookson India Res Ctr, Bangalore 560012, Karnataka, India

[3] Indian Assoc Cultivat Sci, Ctr Adv Mat, Kolkata 700032, W Bengal, India

[4] Jawaharlal Nehru Ctr Adv Sci Res, Bangalore 560054, Karnataka, India

来源：

NANOTECHNOLOGY | 2007年 / 18卷 / 07期

关键词：

D O I：

10.1088/0957-4484/18/7/075401

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

CdSeS nanocrystals with different bandgap energies have been synthesized by the colloidal method. The solution blend of blue-, green- and red-emitting CdSeS nanocrystals, in appropriate proportions, showed strong white emission of different shades on excitation with a UV source. We observed that the CIE coordinate of the spectrum of a particular blend is independent of excitation wavelength. We also observed that the contribution of self-absorption in energy loss in the blend of CdSeS nanocrystals is not very significant. A white-light-emitting LED has been fabricated by coating a blend mixed with polymethylmethacrylate on a commercial UV-LED.

引用

页数：4

共 12 条

[1] White-light emission from magic-sized cadmium selenide nanocrystals [J].