White-light-emitting CdSe quantum dots synthesized at room temperature

被引：32
作者：
Jose, Rajan
Zhelev, Zhivko
Bakalova, Rumiana
Baba, Yoshinobu
Ishikawa, Mitsuru
机构：
[1] AIST, Nanobioanal Team, Hlth Technol Res Ctr, Takamatsu, Kagawa 7610395, Japan
[2] AIST, Onsite Sensing & Diagnost Res Lab, Tosu, Saga 8410052, Japan
来源：
APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 01期
关键词：
D O I：
10.1063/1.2219510
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
White-light-emitting CdSe quantum dots (QDs) were synthesized at room temperature (RT, similar to 23 degrees C) using an organometallic colloidal growth process. These QDs are characterized by high and reproducible quantum yields (Phi(PL)similar to 0.4) as well as by unusual spectral broadening [full width at half maximum (FWHM) similar to 150 nm) despite of their observed size monodispersity. Surface functionalization of these quantum dots using mercaptosuccinic acid made them soluble in water. A change of color together with an enhancement in Phi(PL) was observed upon surface functionalization. (c) 2006 American Institute of Physics.
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