Binary-Phased nanoparticles for enhanced thermoelectric properties

Wenwen Zhou; Jixin Zhu; Di Li; Huey Hoon Hng; Freddy Yin Chiang Boey; Ma Jan; Hua Zhang; Qingyu Yan

doi:10.1002/adma.200900312

Binary-Phased nanoparticles for enhanced thermoelectric properties

Wenwen Zhou^*, Jixin Zhu, Di Li, Huey Hoon Hng, Freddy Yin Chiang Boey, Ma Jan, Hua Zhang, Qingyu Yan

^*Corresponding author for this work

Nanyang Technological University

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

71 Citations (Scopus)

Abstract

A study was conducted to synthesize PbTe-PtTe₂ multi-phased nanoparticles where each particle was composed of PbTe and PtTe₂ phases. It was found that such multi-phased nanocrystals possessed enhanced seebeck coefficient as compared with bulk PbTe. It was also observed that the adjustable ratio of PbTe: PtTe₂ allowed the optimization of charge carrier concentration to improve the electrical conductivity to above 10 ⁵ ω^-1m^-1. A better synthesis process was achieved by rapidly injecting a pentanediol solution of lead acetate trihydrate, telluric acid, and platinum acetylacetonate into a significantly stirred hot pentanediol at 240 °C in the presence of trioctyphosphine oxide (TOPO) and phenylenediamine. These processes were performed to allow the co-precipitation of PbTe and PtTe₂.

Original language	English
Pages (from-to)	3196-3200
Number of pages	5
Journal	Advanced Materials
Volume	21
Issue number	31
DOIs	https://doi.org/10.1002/adma.200900312
Publication status	Published - Aug 21 2009
Externally published	Yes

ASJC Scopus Subject Areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1002/adma.200900312

Cite this

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title = "Binary-Phased nanoparticles for enhanced thermoelectric properties",

abstract = "A study was conducted to synthesize PbTe-PtTe2 multi-phased nanoparticles where each particle was composed of PbTe and PtTe2 phases. It was found that such multi-phased nanocrystals possessed enhanced seebeck coefficient as compared with bulk PbTe. It was also observed that the adjustable ratio of PbTe: PtTe2 allowed the optimization of charge carrier concentration to improve the electrical conductivity to above 10 5 ω-1m-1. A better synthesis process was achieved by rapidly injecting a pentanediol solution of lead acetate trihydrate, telluric acid, and platinum acetylacetonate into a significantly stirred hot pentanediol at 240 °C in the presence of trioctyphosphine oxide (TOPO) and phenylenediamine. These processes were performed to allow the co-precipitation of PbTe and PtTe2.",

author = "Wenwen Zhou and Jixin Zhu and Di Li and Hng, {Huey Hoon} and Boey, {Freddy Yin Chiang} and Ma Jan and Hua Zhang and Qingyu Yan",

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T1 - Binary-Phased nanoparticles for enhanced thermoelectric properties

AU - Zhou, Wenwen

AU - Zhu, Jixin

AU - Li, Di

AU - Hng, Huey Hoon

AU - Boey, Freddy Yin Chiang

AU - Jan, Ma

AU - Zhang, Hua

AU - Yan, Qingyu

PY - 2009/8/21

Y1 - 2009/8/21

N2 - A study was conducted to synthesize PbTe-PtTe2 multi-phased nanoparticles where each particle was composed of PbTe and PtTe2 phases. It was found that such multi-phased nanocrystals possessed enhanced seebeck coefficient as compared with bulk PbTe. It was also observed that the adjustable ratio of PbTe: PtTe2 allowed the optimization of charge carrier concentration to improve the electrical conductivity to above 10 5 ω-1m-1. A better synthesis process was achieved by rapidly injecting a pentanediol solution of lead acetate trihydrate, telluric acid, and platinum acetylacetonate into a significantly stirred hot pentanediol at 240 °C in the presence of trioctyphosphine oxide (TOPO) and phenylenediamine. These processes were performed to allow the co-precipitation of PbTe and PtTe2.

AB - A study was conducted to synthesize PbTe-PtTe2 multi-phased nanoparticles where each particle was composed of PbTe and PtTe2 phases. It was found that such multi-phased nanocrystals possessed enhanced seebeck coefficient as compared with bulk PbTe. It was also observed that the adjustable ratio of PbTe: PtTe2 allowed the optimization of charge carrier concentration to improve the electrical conductivity to above 10 5 ω-1m-1. A better synthesis process was achieved by rapidly injecting a pentanediol solution of lead acetate trihydrate, telluric acid, and platinum acetylacetonate into a significantly stirred hot pentanediol at 240 °C in the presence of trioctyphosphine oxide (TOPO) and phenylenediamine. These processes were performed to allow the co-precipitation of PbTe and PtTe2.

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Binary-Phased nanoparticles for enhanced thermoelectric properties

Abstract

ASJC Scopus Subject Areas

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