Effects of acid-treated silicon nanowires on hybrid solar cells performance

Taewoo Jeon; Bernard Geffroy; Denis Tondelier; Linwei Yu; Pascale Jegou; Bruno Jousselme; Serge Palacin; Pere Roca i Cabarrocas; Yvan Bonnassieux

doi:10.1016/j.solmat.2012.09.015

Effects of acid-treated silicon nanowires on hybrid solar cells performance

Taewoo Jeon, Bernard Geffroy, Denis Tondelier, Linwei Yu, Pascale Jegou, Bruno Jousselme, Serge Palacin, Pere Roca i Cabarrocas, Yvan Bonnassieux

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

Abstract

We demonstrate the efficiency improvement of hybrid solar cells based on silicon nanowires (SiNWs) and organic materials. This progress is readily achieved by acid treatments of SiNWs. Tin (Sn) catalyzed SiNWs contain residual Sn and Sn oxide drops on their top which are deleterious for a solar cell performance. Removal of this Sn and Sn oxide contamination is performed with hydrochloric acid. X-ray photoelectron spectroscopy measurement verified that the amount of Sn and Sn oxide on SiNWs array is decreased according to the immersing time. This brings open-circuit voltage and shunt resistance increase thus the hybrid solar cell performance is improved. Light intensity dependent open-circuit voltage clearly reveals that this efficiency improvement results from a reduced trap-assisted recombination through Sn and Sn oxide. In addition to the residual catalysts removal, native oxide removal by hydrofluoric acid also considerably contributes to further improvement in terms of short-circuit current and fill factor. Clearly, the improvement of SiNWs quality is essential for an optimization of hybrid solar cell performance.

Original language	English
Pages (from-to)	632-637
Number of pages	6
Journal	Solar Energy Materials and Solar Cells
Volume	117
DOIs	https://doi.org/10.1016/j.solmat.2012.09.015
Publication status	Published - 1 Oct 2013

Keywords

Acid treatment
Catalyst removal
Hybrid solar cells
Parasitic absorption
Recombination
Silicon nanowire

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solmat.2012.09.015

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title = "Effects of acid-treated silicon nanowires on hybrid solar cells performance",

abstract = "We demonstrate the efficiency improvement of hybrid solar cells based on silicon nanowires (SiNWs) and organic materials. This progress is readily achieved by acid treatments of SiNWs. Tin (Sn) catalyzed SiNWs contain residual Sn and Sn oxide drops on their top which are deleterious for a solar cell performance. Removal of this Sn and Sn oxide contamination is performed with hydrochloric acid. X-ray photoelectron spectroscopy measurement verified that the amount of Sn and Sn oxide on SiNWs array is decreased according to the immersing time. This brings open-circuit voltage and shunt resistance increase thus the hybrid solar cell performance is improved. Light intensity dependent open-circuit voltage clearly reveals that this efficiency improvement results from a reduced trap-assisted recombination through Sn and Sn oxide. In addition to the residual catalysts removal, native oxide removal by hydrofluoric acid also considerably contributes to further improvement in terms of short-circuit current and fill factor. Clearly, the improvement of SiNWs quality is essential for an optimization of hybrid solar cell performance.",

keywords = "Acid treatment, Catalyst removal, Hybrid solar cells, Parasitic absorption, Recombination, Silicon nanowire",

author = "Taewoo Jeon and Bernard Geffroy and Denis Tondelier and Linwei Yu and Pascale Jegou and Bruno Jousselme and Serge Palacin and \{Roca i Cabarrocas\}, Pere and Yvan Bonnassieux",

note = "Publisher Copyright: {\textcopyright} 2012 Elsevier B.V.",

year = "2013",

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day = "1",

doi = "10.1016/j.solmat.2012.09.015",

language = "English",

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TY - JOUR

T1 - Effects of acid-treated silicon nanowires on hybrid solar cells performance

AU - Jeon, Taewoo

AU - Geffroy, Bernard

AU - Tondelier, Denis

AU - Yu, Linwei

AU - Jegou, Pascale

AU - Jousselme, Bruno

AU - Palacin, Serge

AU - Roca i Cabarrocas, Pere

AU - Bonnassieux, Yvan

PY - 2013/10/1

Y1 - 2013/10/1

N2 - We demonstrate the efficiency improvement of hybrid solar cells based on silicon nanowires (SiNWs) and organic materials. This progress is readily achieved by acid treatments of SiNWs. Tin (Sn) catalyzed SiNWs contain residual Sn and Sn oxide drops on their top which are deleterious for a solar cell performance. Removal of this Sn and Sn oxide contamination is performed with hydrochloric acid. X-ray photoelectron spectroscopy measurement verified that the amount of Sn and Sn oxide on SiNWs array is decreased according to the immersing time. This brings open-circuit voltage and shunt resistance increase thus the hybrid solar cell performance is improved. Light intensity dependent open-circuit voltage clearly reveals that this efficiency improvement results from a reduced trap-assisted recombination through Sn and Sn oxide. In addition to the residual catalysts removal, native oxide removal by hydrofluoric acid also considerably contributes to further improvement in terms of short-circuit current and fill factor. Clearly, the improvement of SiNWs quality is essential for an optimization of hybrid solar cell performance.

AB - We demonstrate the efficiency improvement of hybrid solar cells based on silicon nanowires (SiNWs) and organic materials. This progress is readily achieved by acid treatments of SiNWs. Tin (Sn) catalyzed SiNWs contain residual Sn and Sn oxide drops on their top which are deleterious for a solar cell performance. Removal of this Sn and Sn oxide contamination is performed with hydrochloric acid. X-ray photoelectron spectroscopy measurement verified that the amount of Sn and Sn oxide on SiNWs array is decreased according to the immersing time. This brings open-circuit voltage and shunt resistance increase thus the hybrid solar cell performance is improved. Light intensity dependent open-circuit voltage clearly reveals that this efficiency improvement results from a reduced trap-assisted recombination through Sn and Sn oxide. In addition to the residual catalysts removal, native oxide removal by hydrofluoric acid also considerably contributes to further improvement in terms of short-circuit current and fill factor. Clearly, the improvement of SiNWs quality is essential for an optimization of hybrid solar cell performance.

KW - Acid treatment

KW - Catalyst removal

KW - Hybrid solar cells

KW - Parasitic absorption

KW - Recombination

KW - Silicon nanowire

U2 - 10.1016/j.solmat.2012.09.015

DO - 10.1016/j.solmat.2012.09.015

M3 - Article

AN - SCOPUS:84866792854

SN - 0927-0248

VL - 117

SP - 632

EP - 637

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

ER -

Effects of acid-treated silicon nanowires on hybrid solar cells performance

Abstract

Keywords

UN SDGs

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