Energy-transfer from ultra-small Au nanoclusters to Er3+ ions: a short-range mechanism

被引：9

作者：

Cesca, Tiziana ^{[1
,2
]}

Kalinic, Boris ^{[1
,2
]}

Michieli, Niccolo ^{[1
,2
]}

Maurizio, Chiara ^{[1
,2
]}

Scian, Carlo ^{[1
,2
]}

Devaraju, Gurram ^{[1
,2
]}

Battaglin, Giancarlo ^{[3
]}

Mazzoldi, Paolo ^{[1
,2
]}

Mattei, Giovanni ^{[1
,2
]}

机构：

[1] Univ Padua, Dept Phys & Astron, I-35131 Padua, Italy

[2] Univ Padua, CNISM, I-35131 Padua, Italy

[3] Ca Foscari Univ Venice, Dept Mol Sci & Nanosyst, I-30123 Venice, Italy

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2014年 / 16卷 / 29期

关键词：

LUMINESCENCE; NANOCRYSTALS; GLASSES; SILVER;

D O I：

10.1039/c4cp01680g

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：

Sub-nanometric Au nanoclusters are known to act as very efficient sensitizers for the luminescent emission of Er3+ ions in silica through a non-resonant broad-band energy-transfer mechanism. In the present work the energy-transfer process is investigated in detail by room temperature photoluminescence characterization of Er and Au co-implanted silica systems in which a different degree of coupling between Er3+ ions and Au nanoclusters is obtained. The results allow us to definitely demonstrate the short-range nature of the interaction in agreement with non-radiative energy-transfer mechanisms. Moreover, an upper limit to the interaction length is also set by the Au-Au intercluster semi-distance which is smaller than 2.4 nm in the present case.

引用

页码：15158 / 15163

页数：6

共 22 条

[1]

[Anonymous], UNPUB

[2] Lanthanide-Based Luminescent Hybrid Materials [J].