A comparative study of the impact of Mo and stainless steel substrates on the properties of Cu(In,Ga)Se2 based solar cells

Mishael Stanley; Marie Jubault; Sofia Gaiaschi; Agnès Tempez; Frédérique Donsanti; Negar Naghavi

doi:10.1016/j.tsf.2018.12.027

A comparative study of the impact of Mo and stainless steel substrates on the properties of Cu(In,Ga)Se₂ based solar cells

Mishael Stanley, Marie Jubault, Sofia Gaiaschi, Agnès Tempez, Frédérique Donsanti, Negar Naghavi

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

Abstract

Metallic substrates are well suited for the deposition conditions of Cu(In_x,Ga_1-x)Se₂ (CIGS) solar cells due to their high temperature tolerance. In this work, Molybdenum (Mo) and stainless steel substrates were used in CIGS cell fabrication. Mo foil can be utilized as both the substrate and back contact in the cells. On the other hand, stainless steel despite requiring an impurity barrier layer and back contact deposition, remains economically more interesting. The CIGS absorbers were deposited on the metallic substrates in a 3-stage process at 480 °C. Due to the low deposition temperature, no impurity barrier layer was applied on the stainless steel substrates. For the same deposition conditions, the absorbers on the Mo substrates had a lower [Ga]/[Ga] + [In] ratio (GGI) of 0,24 as compared to 0,28 on the stainless steel substrates. Although the same absorber deposition process was applied to both substrate types, the highest efficiency of 14,0% was recorded on the Mo substrates.

Original language	English
Pages (from-to)	6-11
Number of pages	6
Journal	Thin Solid Films
Volume	671
DOIs	https://doi.org/10.1016/j.tsf.2018.12.027
Publication status	Published - 1 Feb 2019

Keywords

Copper Indium Gallium Selenide
Molybdenum foil
Solar Cells
Stainless Steel

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10.1016/j.tsf.2018.12.027

Cite this

@article{168f26a5ac604307a298b2b07e8122f5,

title = "A comparative study of the impact of Mo and stainless steel substrates on the properties of Cu(In,Ga)Se2 based solar cells",

abstract = "Metallic substrates are well suited for the deposition conditions of Cu(Inx,Ga1-x)Se2 (CIGS) solar cells due to their high temperature tolerance. In this work, Molybdenum (Mo) and stainless steel substrates were used in CIGS cell fabrication. Mo foil can be utilized as both the substrate and back contact in the cells. On the other hand, stainless steel despite requiring an impurity barrier layer and back contact deposition, remains economically more interesting. The CIGS absorbers were deposited on the metallic substrates in a 3-stage process at 480 °C. Due to the low deposition temperature, no impurity barrier layer was applied on the stainless steel substrates. For the same deposition conditions, the absorbers on the Mo substrates had a lower [Ga]/[Ga] + [In] ratio (GGI) of 0,24 as compared to 0,28 on the stainless steel substrates. Although the same absorber deposition process was applied to both substrate types, the highest efficiency of 14,0\% was recorded on the Mo substrates.",

keywords = "Copper Indium Gallium Selenide, Molybdenum foil, Solar Cells, Stainless Steel",

author = "Mishael Stanley and Marie Jubault and Sofia Gaiaschi and Agn{\`e}s Tempez and Fr{\'e}d{\'e}rique Donsanti and Negar Naghavi",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2019",

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doi = "10.1016/j.tsf.2018.12.027",

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T1 - A comparative study of the impact of Mo and stainless steel substrates on the properties of Cu(In,Ga)Se2 based solar cells

AU - Stanley, Mishael

AU - Jubault, Marie

AU - Gaiaschi, Sofia

AU - Tempez, Agnès

AU - Donsanti, Frédérique

AU - Naghavi, Negar

PY - 2019/2/1

Y1 - 2019/2/1

N2 - Metallic substrates are well suited for the deposition conditions of Cu(Inx,Ga1-x)Se2 (CIGS) solar cells due to their high temperature tolerance. In this work, Molybdenum (Mo) and stainless steel substrates were used in CIGS cell fabrication. Mo foil can be utilized as both the substrate and back contact in the cells. On the other hand, stainless steel despite requiring an impurity barrier layer and back contact deposition, remains economically more interesting. The CIGS absorbers were deposited on the metallic substrates in a 3-stage process at 480 °C. Due to the low deposition temperature, no impurity barrier layer was applied on the stainless steel substrates. For the same deposition conditions, the absorbers on the Mo substrates had a lower [Ga]/[Ga] + [In] ratio (GGI) of 0,24 as compared to 0,28 on the stainless steel substrates. Although the same absorber deposition process was applied to both substrate types, the highest efficiency of 14,0% was recorded on the Mo substrates.

AB - Metallic substrates are well suited for the deposition conditions of Cu(Inx,Ga1-x)Se2 (CIGS) solar cells due to their high temperature tolerance. In this work, Molybdenum (Mo) and stainless steel substrates were used in CIGS cell fabrication. Mo foil can be utilized as both the substrate and back contact in the cells. On the other hand, stainless steel despite requiring an impurity barrier layer and back contact deposition, remains economically more interesting. The CIGS absorbers were deposited on the metallic substrates in a 3-stage process at 480 °C. Due to the low deposition temperature, no impurity barrier layer was applied on the stainless steel substrates. For the same deposition conditions, the absorbers on the Mo substrates had a lower [Ga]/[Ga] + [In] ratio (GGI) of 0,24 as compared to 0,28 on the stainless steel substrates. Although the same absorber deposition process was applied to both substrate types, the highest efficiency of 14,0% was recorded on the Mo substrates.

KW - Copper Indium Gallium Selenide

KW - Molybdenum foil

KW - Solar Cells

KW - Stainless Steel

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SN - 0040-6090

VL - 671

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JO - Thin Solid Films

JF - Thin Solid Films