Reversible photoluminescence quenching of CdSe/ZnS quantum dots embedded in porous glass by ammonia vapor

被引：12

作者：

Orlova, A. O. ^{[1
]}

Gromova, Yu A. ^{[1
]}

Maslov, V. G. ^{[1
]}

Andreeva, O. V. ^{[1
]}

Baranov, A. V. ^{[1
]}

Fedorov, A. V. ^{[1
]}

Prudnikau, A. V. ^{[2
]}

Artemyev, M. V. ^{[2
]}

Berwick, K. ^{[3
]}

机构：

[1] Natl Res Univ Informat Technol Mech & Opt, St Petersburg 197101, Russia

[2] Belarusian State Univ, Inst Physicochem Problems, Minsk 220030, BELARUS

[3] Dublin Inst Technol, Sch Elect & Elect Engn, Dublin 8, Ireland

来源：

NANOTECHNOLOGY | 2013年 / 24卷 / 33期

关键词：

ENERGY-TRANSFER; NANOCRYSTALS;

D O I：

10.1088/0957-4484/24/33/335701

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The photoluminescence response of semiconductor CdSe/ZnS quantum dots embedded in a borosilicate porous glass matrix to exposure to ammonia vapor is investigated. The formation of surface complexes on the quantum dots results in quenching of the photoluminescence and a shortening of the luminescence decay time. The process is reversible, desorption of ammonia molecules from the quantum dot surface causes the photoluminescence to recover. The sensitivity of the quantum dot luminescence intensity and decay time to the interaction time and the reversibility of the photoluminescence changes make the CdSe/ZnS quantum dots in porous glass system a candidate for use as an optical sensor of ammonia.

引用

页数：5

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