Two-Step "seed-Mediated" Synthetic Approach to Colloidal Indium Phosphide Quantum Dots with High-Purity Photo- and Electroluminescence

Parthiban Ramasamy; Keum Jin Ko; Jae Wook Kang; Jong Soo Lee

doi:10.1021/acs.chemmater.8b02049

Two-Step "seed-Mediated" Synthetic Approach to Colloidal Indium Phosphide Quantum Dots with High-Purity Photo- and Electroluminescence

Parthiban Ramasamy, Keum Jin Ko, Jae Wook Kang, Jong Soo Lee

Department of Energy and Science and Engineering

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

116 Scopus citations

Abstract

A study was conducted to present a two-step approach to synthesize highly monodisperse indium phosphide (InP) quantum dots (QDs) absorbing from 490 to 650 nm. Initially, InP QDs with an average size of 1.9 nm were synthesized and later used as 'seeds' to grow larger QDs by continuously injecting Zn(In)-P complexes as monomers source. The study used X-ray photoelectron spectroscopy (XPS) to study the oxidation of phosphorus in the synthesized InP 'seeds'. The absence of oxidized phosphorus signal showed the oxide free surface of the 'seed' QDs.

Original language	English
Pages (from-to)	3643-3647
Number of pages	5
Journal	Chemistry of Materials
Volume	30
Issue number	11
DOIs	https://doi.org/10.1021/acs.chemmater.8b02049
State	Published - 12 Jun 2018

Bibliographical note

Funding Information:
This work was supported by the Human Resource Training Project for Regional Innovation (No. 2015035858) through the Ministry of Education (MOE) and National Research Foundation of Korea (NRF) and the Ministry of Trade, Industry & Energy of Korea (No. 10052853). This work also partially supported by the Basic Science Research Program (NRF-2017R1A2B2001838) funded by the Ministry of Science, ICT & Future Planning. We thank Omar Ramirez for size distribution measurements. We thank Taehoon Cheon (CCRF, DGIST) for TEM characterizations.

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abstract = "A study was conducted to present a two-step approach to synthesize highly monodisperse indium phosphide (InP) quantum dots (QDs) absorbing from 490 to 650 nm. Initially, InP QDs with an average size of 1.9 nm were synthesized and later used as 'seeds' to grow larger QDs by continuously injecting Zn(In)-P complexes as monomers source. The study used X-ray photoelectron spectroscopy (XPS) to study the oxidation of phosphorus in the synthesized InP 'seeds'. The absence of oxidized phosphorus signal showed the oxide free surface of the 'seed' QDs.",

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AU - Lee, Jong Soo

N1 - Funding Information: This work was supported by the Human Resource Training Project for Regional Innovation (No. 2015035858) through the Ministry of Education (MOE) and National Research Foundation of Korea (NRF) and the Ministry of Trade, Industry & Energy of Korea (No. 10052853). This work also partially supported by the Basic Science Research Program (NRF-2017R1A2B2001838) funded by the Ministry of Science, ICT & Future Planning. We thank Omar Ramirez for size distribution measurements. We thank Taehoon Cheon (CCRF, DGIST) for TEM characterizations.

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AB - A study was conducted to present a two-step approach to synthesize highly monodisperse indium phosphide (InP) quantum dots (QDs) absorbing from 490 to 650 nm. Initially, InP QDs with an average size of 1.9 nm were synthesized and later used as 'seeds' to grow larger QDs by continuously injecting Zn(In)-P complexes as monomers source. The study used X-ray photoelectron spectroscopy (XPS) to study the oxidation of phosphorus in the synthesized InP 'seeds'. The absence of oxidized phosphorus signal showed the oxide free surface of the 'seed' QDs.

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Two-Step "seed-Mediated" Synthetic Approach to Colloidal Indium Phosphide Quantum Dots with High-Purity Photo- and Electroluminescence

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