Bonding of Bi2Te3-Based Thermoelectric Legs to Metallic Contacts Using Bi0.82Sb0.18 Alloy

Roi Vizel; Tal Bargig; Ofer Beeri; Yaniv Gelbstein

doi:https://doi.org/10.1007/s11664-015-4003-2

Bonding of Bi₂Te₃-Based Thermoelectric Legs to Metallic Contacts Using Bi_0.82Sb_0.18 Alloy

Roi Vizel, Tal Bargig, Ofer Beeri, Yaniv Gelbstein

Ben-Gurion University of the Negev

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

Abstract

Thermoelectrics is gaining increased attention as a renewable direct energy conversion method from heat to electricity. The most efficient and up-to-date thermoelectric materials for temperatures of up to 250°C are (Bi_1−xSb_x)₂(Te_1−ySe_y)₃ alloys. In the current research, to discover practical thermoelectric power generation devices capable of operation at such temperatures, Bi_0.82Sb_0.18 alloy was considered as a lead-free high-temperature (<250°C) solder composition for bonding of n-type Bi₂Te_2.4Se_0.6 and p-type Bi_0.4Sb_1.6Te₃ legs into Cu, Ag, Ni and Fe metallic bridges. In the case of Cu, fine contacts with low electrical contact resistance of ∼1.5 ± 0.5 mΩ mm² were observed upon soldering at 350°C.

Original language	American English
Pages (from-to)	1296-1300
Number of pages	5
Journal	Journal of Electronic Materials
Volume	45
Issue number	3
DOIs	https://doi.org/10.1007/s11664-015-4003-2
State	Published - 1 Mar 2016

Keywords

Bi-Sb
BiTe
Thermoelectrics
bonding

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

Access to Document

https://doi.org/10.1007/s11664-015-4003-2

Cite this

@article{302cb38ec4994cc29141d0116559d34d,

title = "Bonding of Bi2Te3-Based Thermoelectric Legs to Metallic Contacts Using Bi0.82Sb0.18 Alloy",

abstract = "Thermoelectrics is gaining increased attention as a renewable direct energy conversion method from heat to electricity. The most efficient and up-to-date thermoelectric materials for temperatures of up to 250°C are (Bi1−xSbx)2(Te1−ySey)3 alloys. In the current research, to discover practical thermoelectric power generation devices capable of operation at such temperatures, Bi0.82Sb0.18 alloy was considered as a lead-free high-temperature (<250°C) solder composition for bonding of n-type Bi2Te2.4Se0.6 and p-type Bi0.4Sb1.6Te3 legs into Cu, Ag, Ni and Fe metallic bridges. In the case of Cu, fine contacts with low electrical contact resistance of ∼1.5 ± 0.5 mΩ mm2 were observed upon soldering at 350°C.",

keywords = "Bi-Sb, BiTe, Thermoelectrics, bonding",

author = "Roi Vizel and Tal Bargig and Ofer Beeri and Yaniv Gelbstein",

note = "Publisher Copyright: {\textcopyright} 2015, The Minerals, Metals & Materials Society.",

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T1 - Bonding of Bi2Te3-Based Thermoelectric Legs to Metallic Contacts Using Bi0.82Sb0.18 Alloy

AU - Vizel, Roi

AU - Bargig, Tal

AU - Beeri, Ofer

AU - Gelbstein, Yaniv

PY - 2016/3/1

Y1 - 2016/3/1

N2 - Thermoelectrics is gaining increased attention as a renewable direct energy conversion method from heat to electricity. The most efficient and up-to-date thermoelectric materials for temperatures of up to 250°C are (Bi1−xSbx)2(Te1−ySey)3 alloys. In the current research, to discover practical thermoelectric power generation devices capable of operation at such temperatures, Bi0.82Sb0.18 alloy was considered as a lead-free high-temperature (<250°C) solder composition for bonding of n-type Bi2Te2.4Se0.6 and p-type Bi0.4Sb1.6Te3 legs into Cu, Ag, Ni and Fe metallic bridges. In the case of Cu, fine contacts with low electrical contact resistance of ∼1.5 ± 0.5 mΩ mm2 were observed upon soldering at 350°C.

AB - Thermoelectrics is gaining increased attention as a renewable direct energy conversion method from heat to electricity. The most efficient and up-to-date thermoelectric materials for temperatures of up to 250°C are (Bi1−xSbx)2(Te1−ySey)3 alloys. In the current research, to discover practical thermoelectric power generation devices capable of operation at such temperatures, Bi0.82Sb0.18 alloy was considered as a lead-free high-temperature (<250°C) solder composition for bonding of n-type Bi2Te2.4Se0.6 and p-type Bi0.4Sb1.6Te3 legs into Cu, Ag, Ni and Fe metallic bridges. In the case of Cu, fine contacts with low electrical contact resistance of ∼1.5 ± 0.5 mΩ mm2 were observed upon soldering at 350°C.

KW - Bi-Sb

KW - BiTe

KW - Thermoelectrics

KW - bonding

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