3-D architecture between indium tin oxide nano-rods and a solution processed CuInGaS2 absorber layer for thin film solar cells

Van Ben Chu; Chan Sik Kim; Gi Soon Park; Young Ki Lee; Yun Jeong Hwang; Young Rag Do; Byoung Koun Min

doi:10.1016/j.tsf.2017.06.052

3-D architecture between indium tin oxide nano-rods and a solution processed CuInGaS₂ absorber layer for thin film solar cells

Van Ben Chu, Chan Sik Kim, Gi Soon Park, Young Ki Lee, Yun Jeong Hwang, Young Rag Do, Byoung Koun Min

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

1 Citation (Scopus)

Abstract

The performance of thin film solar cells can be significantly enhanced by efficient light management. In this study, we integrated one-dimensional indium tin oxide (ITO) nanorods into CuInGaS₂ (CIGS) films to fabricate 3-D nanostructured thin film solar cells. 400, 600, and 1000 nm ITO nanorod substrates were used as back contact electrodes. Precursor solutions of Cu, In, and Ga with and without binder materials were prepared to fill the gaps between the ITO nanorods and increase the thickness of the CIGS films, respectively. Heat treatments both in air and in H₂S were applied to form polycrystalline CIGS films while minimizing carbon impurities. 3-D nanostructured solar cell devices with Al,Ni/AZO/i-ZnO/CdS/CIGS/ITO nanorods/Glass structures were fabricated and characterized. Under standard irradiation conditions, the 600 nm ITO nanorod solar device was found to have the maximum power conversion efficiency of 6%. This superior efficiency may be attributed to enhanced light absorption and complete gap filling.

Original language	English
Pages (from-to)	506-511
Number of pages	6
Journal	Thin Solid Films
Volume	636
DOIs	https://doi.org/10.1016/j.tsf.2017.06.052
Publication status	Published - 2017 Aug 31

Bibliographical note

Funding Information:
This work was supported by the Energy Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant (20163010012570). Also, the authors would like to thank the National Research Foundation of Korea (NRF) Grant funded by the Korean Government (MSIP) (No. 2016R1A5A1012966).

Publisher Copyright:
© 2016

Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

Keywords

3-D
CIGS
ITO nanorods
Solar cells
Solution process

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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10.1016/j.tsf.2017.06.052

Cite this

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title = "3-D architecture between indium tin oxide nano-rods and a solution processed CuInGaS2 absorber layer for thin film solar cells",

abstract = "The performance of thin film solar cells can be significantly enhanced by efficient light management. In this study, we integrated one-dimensional indium tin oxide (ITO) nanorods into CuInGaS2 (CIGS) films to fabricate 3-D nanostructured thin film solar cells. 400, 600, and 1000 nm ITO nanorod substrates were used as back contact electrodes. Precursor solutions of Cu, In, and Ga with and without binder materials were prepared to fill the gaps between the ITO nanorods and increase the thickness of the CIGS films, respectively. Heat treatments both in air and in H2S were applied to form polycrystalline CIGS films while minimizing carbon impurities. 3-D nanostructured solar cell devices with Al,Ni/AZO/i-ZnO/CdS/CIGS/ITO nanorods/Glass structures were fabricated and characterized. Under standard irradiation conditions, the 600 nm ITO nanorod solar device was found to have the maximum power conversion efficiency of 6%. This superior efficiency may be attributed to enhanced light absorption and complete gap filling.",

keywords = "3-D, CIGS, ITO nanorods, Solar cells, Solution process",

author = "Chu, {Van Ben} and Kim, {Chan Sik} and Park, {Gi Soon} and Lee, {Young Ki} and Hwang, {Yun Jeong} and Do, {Young Rag} and Min, {Byoung Koun}",

note = "Funding Information: This work was supported by the Energy Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant (20163010012570). Also, the authors would like to thank the National Research Foundation of Korea (NRF) Grant funded by the Korean Government (MSIP) (No. 2016R1A5A1012966). Publisher Copyright: {\textcopyright} 2016 Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

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AU - Chu, Van Ben

AU - Kim, Chan Sik

AU - Park, Gi Soon

AU - Lee, Young Ki

AU - Hwang, Yun Jeong

AU - Do, Young Rag

AU - Min, Byoung Koun

N1 - Funding Information: This work was supported by the Energy Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant (20163010012570). Also, the authors would like to thank the National Research Foundation of Korea (NRF) Grant funded by the Korean Government (MSIP) (No. 2016R1A5A1012966). Publisher Copyright: © 2016 Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2017/8/31

Y1 - 2017/8/31

N2 - The performance of thin film solar cells can be significantly enhanced by efficient light management. In this study, we integrated one-dimensional indium tin oxide (ITO) nanorods into CuInGaS2 (CIGS) films to fabricate 3-D nanostructured thin film solar cells. 400, 600, and 1000 nm ITO nanorod substrates were used as back contact electrodes. Precursor solutions of Cu, In, and Ga with and without binder materials were prepared to fill the gaps between the ITO nanorods and increase the thickness of the CIGS films, respectively. Heat treatments both in air and in H2S were applied to form polycrystalline CIGS films while minimizing carbon impurities. 3-D nanostructured solar cell devices with Al,Ni/AZO/i-ZnO/CdS/CIGS/ITO nanorods/Glass structures were fabricated and characterized. Under standard irradiation conditions, the 600 nm ITO nanorod solar device was found to have the maximum power conversion efficiency of 6%. This superior efficiency may be attributed to enhanced light absorption and complete gap filling.

AB - The performance of thin film solar cells can be significantly enhanced by efficient light management. In this study, we integrated one-dimensional indium tin oxide (ITO) nanorods into CuInGaS2 (CIGS) films to fabricate 3-D nanostructured thin film solar cells. 400, 600, and 1000 nm ITO nanorod substrates were used as back contact electrodes. Precursor solutions of Cu, In, and Ga with and without binder materials were prepared to fill the gaps between the ITO nanorods and increase the thickness of the CIGS films, respectively. Heat treatments both in air and in H2S were applied to form polycrystalline CIGS films while minimizing carbon impurities. 3-D nanostructured solar cell devices with Al,Ni/AZO/i-ZnO/CdS/CIGS/ITO nanorods/Glass structures were fabricated and characterized. Under standard irradiation conditions, the 600 nm ITO nanorod solar device was found to have the maximum power conversion efficiency of 6%. This superior efficiency may be attributed to enhanced light absorption and complete gap filling.

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