Carbon nanotube-silicon heterojunction solar cells with surface-textured Si and solution-processed carbon nanotube films

Eri Muramoto; Yuhei Yamasaki; Feijiu Wang; Kei Hasegawa; Kazunari Matsuda; Suguru Noda

doi:10.1039/c6ra16132d

Carbon nanotube-silicon heterojunction solar cells with surface-textured Si and solution-processed carbon nanotube films

Eri Muramoto, Yuhei Yamasaki, Feijiu Wang, Kei Hasegawa, Kazunari Matsuda, Suguru Noda^*

^*Corresponding author for this work

School of Advanced Science and Engineering

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

19 Citations (Scopus)

Abstract

Carbon nanotube (CNT)-silicon (Si) heterojunction solar cells are fabricated with surface-textured Si substrates. Using a dilute alkaline solution, common etchant in the Si solar cell industry, we formed a pyramidal texture on the Si substrate surface. The texture effectively enhances the absorption of the incident light, improving the short-circuit current density by ∼1.3-fold, up to 33.1 mA cm^-2. We fabricated CNT-Si solar cells with a power conversion efficiency (PCE) of 10.4% without any anti-reflective coatings or doping of the CNTs. Moreover, the CNT films were prepared from commercialized CNT agglomerates by a mild solution-based process, which is well suited for the fabrication of CNT-Si solar cells with large area. We also achieved a PCE of 9.57% for a flat cell with careful removal of surfactant from and doping by nitric acid of the CNT films. These findings suggest that with the combination of surface-textured Si and solution-processed CNT films, efficient and low-cost CNT-Si solar cells may be realized.

Original language	English
Pages (from-to)	93575-93581
Number of pages	7
Journal	RSC Advances
Volume	6
Issue number	96
DOIs	https://doi.org/10.1039/c6ra16132d
Publication status	Published - 2016

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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title = "Carbon nanotube-silicon heterojunction solar cells with surface-textured Si and solution-processed carbon nanotube films",

abstract = "Carbon nanotube (CNT)-silicon (Si) heterojunction solar cells are fabricated with surface-textured Si substrates. Using a dilute alkaline solution, common etchant in the Si solar cell industry, we formed a pyramidal texture on the Si substrate surface. The texture effectively enhances the absorption of the incident light, improving the short-circuit current density by ∼1.3-fold, up to 33.1 mA cm-2. We fabricated CNT-Si solar cells with a power conversion efficiency (PCE) of 10.4% without any anti-reflective coatings or doping of the CNTs. Moreover, the CNT films were prepared from commercialized CNT agglomerates by a mild solution-based process, which is well suited for the fabrication of CNT-Si solar cells with large area. We also achieved a PCE of 9.57% for a flat cell with careful removal of surfactant from and doping by nitric acid of the CNT films. These findings suggest that with the combination of surface-textured Si and solution-processed CNT films, efficient and low-cost CNT-Si solar cells may be realized.",

author = "Eri Muramoto and Yuhei Yamasaki and Feijiu Wang and Kei Hasegawa and Kazunari Matsuda and Suguru Noda",

note = "Funding Information: We would like to thank Prof. Nishide, Prof. Oyaizu, and Ms. Nakajima at Department of Applied Chemistry, Waseda University for their support in J-V measurements, Mr Enomoto at Kagami Memorial Research Institute for Materials Science and Technology, Waseda University for XPS measurements, Meijo Nano Carbon Co., Ltd. for providing us with their MEIJO eDIPS CNTs, and Dr Sugime at Waseda Institute for Advanced Study, Waseda University for his help in editing this manuscript. This work was financially supported by JSPS KAKENHI Grant Numbers 15K14216 and 25107002, and by the ALCA, JST. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2016.",

year = "2016",

doi = "10.1039/c6ra16132d",

language = "English",

volume = "6",

pages = "93575--93581",

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T1 - Carbon nanotube-silicon heterojunction solar cells with surface-textured Si and solution-processed carbon nanotube films

AU - Muramoto, Eri

AU - Yamasaki, Yuhei

AU - Wang, Feijiu

AU - Hasegawa, Kei

AU - Matsuda, Kazunari

AU - Noda, Suguru

N1 - Funding Information: We would like to thank Prof. Nishide, Prof. Oyaizu, and Ms. Nakajima at Department of Applied Chemistry, Waseda University for their support in J-V measurements, Mr Enomoto at Kagami Memorial Research Institute for Materials Science and Technology, Waseda University for XPS measurements, Meijo Nano Carbon Co., Ltd. for providing us with their MEIJO eDIPS CNTs, and Dr Sugime at Waseda Institute for Advanced Study, Waseda University for his help in editing this manuscript. This work was financially supported by JSPS KAKENHI Grant Numbers 15K14216 and 25107002, and by the ALCA, JST. Publisher Copyright: © The Royal Society of Chemistry 2016.

PY - 2016

Y1 - 2016

N2 - Carbon nanotube (CNT)-silicon (Si) heterojunction solar cells are fabricated with surface-textured Si substrates. Using a dilute alkaline solution, common etchant in the Si solar cell industry, we formed a pyramidal texture on the Si substrate surface. The texture effectively enhances the absorption of the incident light, improving the short-circuit current density by ∼1.3-fold, up to 33.1 mA cm-2. We fabricated CNT-Si solar cells with a power conversion efficiency (PCE) of 10.4% without any anti-reflective coatings or doping of the CNTs. Moreover, the CNT films were prepared from commercialized CNT agglomerates by a mild solution-based process, which is well suited for the fabrication of CNT-Si solar cells with large area. We also achieved a PCE of 9.57% for a flat cell with careful removal of surfactant from and doping by nitric acid of the CNT films. These findings suggest that with the combination of surface-textured Si and solution-processed CNT films, efficient and low-cost CNT-Si solar cells may be realized.

AB - Carbon nanotube (CNT)-silicon (Si) heterojunction solar cells are fabricated with surface-textured Si substrates. Using a dilute alkaline solution, common etchant in the Si solar cell industry, we formed a pyramidal texture on the Si substrate surface. The texture effectively enhances the absorption of the incident light, improving the short-circuit current density by ∼1.3-fold, up to 33.1 mA cm-2. We fabricated CNT-Si solar cells with a power conversion efficiency (PCE) of 10.4% without any anti-reflective coatings or doping of the CNTs. Moreover, the CNT films were prepared from commercialized CNT agglomerates by a mild solution-based process, which is well suited for the fabrication of CNT-Si solar cells with large area. We also achieved a PCE of 9.57% for a flat cell with careful removal of surfactant from and doping by nitric acid of the CNT films. These findings suggest that with the combination of surface-textured Si and solution-processed CNT films, efficient and low-cost CNT-Si solar cells may be realized.

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Carbon nanotube-silicon heterojunction solar cells with surface-textured Si and solution-processed carbon nanotube films

Abstract

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