Luminescent Cu doped CdTe nanocrystals via cation exchange of Cu7Te5 nanocubes: From undoped to doped emission

Jiaojiao Zheng; Bing Bai; Qiumei Di; Zhuoli Jiang; Meng Xu; Jiatao Zhang

doi:10.1016/j.pnsc.2021.04.011

Luminescent Cu doped CdTe nanocrystals via cation exchange of Cu₇Te₅ nanocubes: From undoped to doped emission

Jiaojiao Zheng, Bing Bai, Qiumei Di, Zhuoli Jiang, Meng Xu, Jiatao Zhang^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

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

2 Citations (Scopus)

Abstract

In II-VI group, the doping in CdTe nanocrystals (NCs) is more difficult than other chalcogenides. In this communication, CdTe nanocrystals containing Cu impurities were carefully synthesized based on controlled reverse cation exchange process between as-prepared Cu₇Te₅ nanocubes and Cd²⁺ ions. By well-defined Cu₇Te₅ nanocubes, the obtained CdTe NCs kept the original morphology. The concentration of Cu impurities in CdTe NCs was controlled by the regulation such reverse cation exchange. Additionally, the regulation from band gap (BG) photoluminescence (PL) to the coexistence of the bandgap emission, dopant emission, and surface-state emission was realized. This tailoring from undoped to doped emission in the case of Cu impurities is helpful to study the Cu related doping in telluride NCs.

Original language	English
Pages (from-to)	398-403
Number of pages	6
Journal	Progress in Natural Science: Materials International
Volume	31
Issue number	3
DOIs	https://doi.org/10.1016/j.pnsc.2021.04.011
Publication status	Published - Jun 2021

Keywords

Cation exchange
Colloidal semiconductor nanocrystals
Cu-related emission
Photoluminescence regulation

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10.1016/j.pnsc.2021.04.011

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title = "Luminescent Cu doped CdTe nanocrystals via cation exchange of Cu7Te5 nanocubes: From undoped to doped emission",

abstract = "In II-VI group, the doping in CdTe nanocrystals (NCs) is more difficult than other chalcogenides. In this communication, CdTe nanocrystals containing Cu impurities were carefully synthesized based on controlled reverse cation exchange process between as-prepared Cu7Te5 nanocubes and Cd2+ ions. By well-defined Cu7Te5 nanocubes, the obtained CdTe NCs kept the original morphology. The concentration of Cu impurities in CdTe NCs was controlled by the regulation such reverse cation exchange. Additionally, the regulation from band gap (BG) photoluminescence (PL) to the coexistence of the bandgap emission, dopant emission, and surface-state emission was realized. This tailoring from undoped to doped emission in the case of Cu impurities is helpful to study the Cu related doping in telluride NCs.",

keywords = "Cation exchange, Colloidal semiconductor nanocrystals, Cu-related emission, Photoluminescence regulation",

author = "Jiaojiao Zheng and Bing Bai and Qiumei Di and Zhuoli Jiang and Meng Xu and Jiatao Zhang",

note = "Publisher Copyright: {\textcopyright} 2021 Chinese Materials Research Society",

year = "2021",

month = jun,

doi = "10.1016/j.pnsc.2021.04.011",

language = "English",

volume = "31",

pages = "398--403",

journal = "Progress in Natural Science: Materials International",

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}

TY - JOUR

T1 - Luminescent Cu doped CdTe nanocrystals via cation exchange of Cu7Te5 nanocubes

T2 - From undoped to doped emission

AU - Zheng, Jiaojiao

AU - Bai, Bing

AU - Di, Qiumei

AU - Jiang, Zhuoli

AU - Xu, Meng

AU - Zhang, Jiatao

PY - 2021/6

Y1 - 2021/6

N2 - In II-VI group, the doping in CdTe nanocrystals (NCs) is more difficult than other chalcogenides. In this communication, CdTe nanocrystals containing Cu impurities were carefully synthesized based on controlled reverse cation exchange process between as-prepared Cu7Te5 nanocubes and Cd2+ ions. By well-defined Cu7Te5 nanocubes, the obtained CdTe NCs kept the original morphology. The concentration of Cu impurities in CdTe NCs was controlled by the regulation such reverse cation exchange. Additionally, the regulation from band gap (BG) photoluminescence (PL) to the coexistence of the bandgap emission, dopant emission, and surface-state emission was realized. This tailoring from undoped to doped emission in the case of Cu impurities is helpful to study the Cu related doping in telluride NCs.

AB - In II-VI group, the doping in CdTe nanocrystals (NCs) is more difficult than other chalcogenides. In this communication, CdTe nanocrystals containing Cu impurities were carefully synthesized based on controlled reverse cation exchange process between as-prepared Cu7Te5 nanocubes and Cd2+ ions. By well-defined Cu7Te5 nanocubes, the obtained CdTe NCs kept the original morphology. The concentration of Cu impurities in CdTe NCs was controlled by the regulation such reverse cation exchange. Additionally, the regulation from band gap (BG) photoluminescence (PL) to the coexistence of the bandgap emission, dopant emission, and surface-state emission was realized. This tailoring from undoped to doped emission in the case of Cu impurities is helpful to study the Cu related doping in telluride NCs.

KW - Cation exchange

KW - Colloidal semiconductor nanocrystals

KW - Cu-related emission

KW - Photoluminescence regulation

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U2 - 10.1016/j.pnsc.2021.04.011

DO - 10.1016/j.pnsc.2021.04.011

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AN - SCOPUS:85107012849

SN - 1002-0071

VL - 31

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JO - Progress in Natural Science: Materials International

JF - Progress in Natural Science: Materials International

IS - 3

ER -

Luminescent Cu doped CdTe nanocrystals via cation exchange of Cu₇Te₅ nanocubes: From undoped to doped emission

Abstract

Keywords

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