Synthesis and Properties of Water-Soluble Blue-Emitting Mn-Alloyed CdTe Quantum Dots

Olena Tynkevych; Volodymyr Karavan; Igor Vorona; Svitlana Filonenko; Yuriy Khalavka

doi:10.1186/s11671-018-2529-y

Synthesis and Properties of Water-Soluble Blue-Emitting Mn-Alloyed CdTe Quantum Dots

Olena Tynkevych^*, Volodymyr Karavan, Igor Vorona, Svitlana Filonenko, Yuriy Khalavka

^*Corresponding author for this work

Department of Neuroscience and Biomedical Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

10 Citations (Scopus)

186 Downloads (Pure)

Abstract

In this work, we prepared CdTe quantum dots, and series of Cd_1-xMn_xTe-alloyed quantum dots with narrow size distribution by an ion-exchange reaction in water solution. We found that the photoluminescence peaks are shifted to higher energies with the increasing Mn²⁺ content. So far, this is the first report of blue-emitting CdTe-based quantum dots. By means of cyclic voltammetry, we detected features of electrochemical activity of manganese energy levels formed inside the Cd_1-xMn_xTe-alloyed quantum dot band gap. This allowed us to estimate their energy position. We also demonstrate paramagnetic behavior for Cd_1-xMn_xTe-alloyed quantum dots which confirmed the successful ion-exchange reaction.

Original language	English
Article number	132
Pages (from-to)	1-6
Journal	Nanoscale Research Letters
Volume	13
DOIs	https://doi.org/10.1186/s11671-018-2529-y
Publication status	Published - 1 Jan 2018
MoE publication type	A1 Journal article-refereed

Keywords

Alloying
Cadmium telluride
Manganese
Quantum dots
Thioglycolic acid

Access to Document

10.1186/s11671-018-2529-y

s11671-018-2529-yFinal published version, 1.54 MBLicence: CC BY

Cite this

@article{02af1db2201e4334b01239a1b6ad5f96,

title = "Synthesis and Properties of Water-Soluble Blue-Emitting Mn-Alloyed CdTe Quantum Dots",

abstract = "In this work, we prepared CdTe quantum dots, and series of Cd1-xMnxTe-alloyed quantum dots with narrow size distribution by an ion-exchange reaction in water solution. We found that the photoluminescence peaks are shifted to higher energies with the increasing Mn2+ content. So far, this is the first report of blue-emitting CdTe-based quantum dots. By means of cyclic voltammetry, we detected features of electrochemical activity of manganese energy levels formed inside the Cd1-xMnxTe-alloyed quantum dot band gap. This allowed us to estimate their energy position. We also demonstrate paramagnetic behavior for Cd1-xMnxTe-alloyed quantum dots which confirmed the successful ion-exchange reaction.",

keywords = "Alloying, Cadmium telluride, Manganese, Quantum dots, Thioglycolic acid",

author = "Olena Tynkevych and Volodymyr Karavan and Igor Vorona and Svitlana Filonenko and Yuriy Khalavka",

year = "2018",

month = jan,

day = "1",

doi = "10.1186/s11671-018-2529-y",

language = "English",

volume = "13",

pages = "1--6",

journal = "Nanoscale Research Letters",

issn = "1931-7573",

publisher = "Springer",

}

TY - JOUR

T1 - Synthesis and Properties of Water-Soluble Blue-Emitting Mn-Alloyed CdTe Quantum Dots

AU - Tynkevych, Olena

AU - Karavan, Volodymyr

AU - Vorona, Igor

AU - Filonenko, Svitlana

AU - Khalavka, Yuriy

PY - 2018/1/1

Y1 - 2018/1/1

N2 - In this work, we prepared CdTe quantum dots, and series of Cd1-xMnxTe-alloyed quantum dots with narrow size distribution by an ion-exchange reaction in water solution. We found that the photoluminescence peaks are shifted to higher energies with the increasing Mn2+ content. So far, this is the first report of blue-emitting CdTe-based quantum dots. By means of cyclic voltammetry, we detected features of electrochemical activity of manganese energy levels formed inside the Cd1-xMnxTe-alloyed quantum dot band gap. This allowed us to estimate their energy position. We also demonstrate paramagnetic behavior for Cd1-xMnxTe-alloyed quantum dots which confirmed the successful ion-exchange reaction.

AB - In this work, we prepared CdTe quantum dots, and series of Cd1-xMnxTe-alloyed quantum dots with narrow size distribution by an ion-exchange reaction in water solution. We found that the photoluminescence peaks are shifted to higher energies with the increasing Mn2+ content. So far, this is the first report of blue-emitting CdTe-based quantum dots. By means of cyclic voltammetry, we detected features of electrochemical activity of manganese energy levels formed inside the Cd1-xMnxTe-alloyed quantum dot band gap. This allowed us to estimate their energy position. We also demonstrate paramagnetic behavior for Cd1-xMnxTe-alloyed quantum dots which confirmed the successful ion-exchange reaction.

KW - Alloying

KW - Cadmium telluride

KW - Manganese

KW - Quantum dots

KW - Thioglycolic acid

UR - http://www.scopus.com/inward/record.url?scp=85046621055&partnerID=8YFLogxK

U2 - 10.1186/s11671-018-2529-y

DO - 10.1186/s11671-018-2529-y

M3 - Article

AN - SCOPUS:85046621055

SN - 1931-7573

VL - 13

SP - 1

EP - 6

JO - Nanoscale Research Letters

JF - Nanoscale Research Letters

M1 - 132

ER -

Synthesis and Properties of Water-Soluble Blue-Emitting Mn-Alloyed CdTe Quantum Dots

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this