P-N Junction Effect of Multi-walled Carbon Nanotubes Array on Gas Detection

Hashishin, Takeshi; Omae, Masaki; Yamamoto, Kazuhiro; Kojima, Kazuo; Tamaki, Jun; Ohara, Satoshi

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タイトル	P-N Junction Effect of Multi-walled Carbon Nanotubes Array on Gas Detection
著者	Hashishin, Takeshi Hashishin, Takeshi
	Omae, Masaki Omae, Masaki
	Yamamoto, Kazuhiro Yamamoto, Kazuhiro
	Kojima, Kazuo Kojima, Kazuo
	Tamaki, Jun Tamaki, Jun
	Ohara, Satoshi Ohara, Satoshi
キーワード等	MWCNTs
	Ni_xS
	p-n junction
抄録	Abstract (italic typeface) Multi-walled carbon nanotubes (MWCNTs) array of about 40 nm in diameter and 500 to 1300 nm in length was directly grown on Au interdigitated electrodes by radio frequency plasma-enhanced chemical vapor deposition (RF-PECVD). The growth catalyst of Ni_3C-Ni at the tip of the MWCNTs array was observed by transmission electron microscope (TEM) and selected area electron diffraction (SAED). The sensing properties of MWCNTs arrays to NO_2, H_2S, CH_3SH and C_8H_10 were investigated at operating temperature from 100 to 250 oC. The resistance change to sulfur gases was higher than NO_2 and C_8H_10. It was suggested that Ni at the tip was sulfidized to be Ni_xS in sulfur gas and that the p-n junction was formed at the interface between p-type MWCNTs and n-type Ni_xS.
公開者	大阪大学接合科学研究所
公開者の別表記	Joining and Welding Research Institute, Osaka University
公開者 (ヨミ)	オオサカダイガクセツゴウカガクケンキュウジョ
掲載誌名	Transactions of JWRI
巻	41
号	2
開始ページ	23
終了ページ	26
刊行年月	2012-12
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/24859
言語	英語
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.41 No.2 (2012-12)

著者版フラグ	publisher
NII資源タイプ	紀要論文
ローカル資源タイプ	紀要論文
dcmi資源タイプ	text
DCTERMS.bibliographicCitation	Transactions of JWRI.41(2) P.23-P.26
DC.title	P-N Junction Effect of Multi-walled Carbon Nanotubes Array on Gas Detection
DC.creator	Hashishin, Takeshi
	Omae, Masaki
	Yamamoto, Kazuhiro
	Kojima, Kazuo
	Tamaki, Jun
	Ohara, Satoshi
DC.publisher	大阪大学接合科学研究所
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2012-12
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/24859
DC.subject	MWCNTs
	Ni_xS
	p-n junction
DCTERMS.abstract	Abstract (italic typeface) Multi-walled carbon nanotubes (MWCNTs) array of about 40 nm in diameter and 500 to 1300 nm in length was directly grown on Au interdigitated electrodes by radio frequency plasma-enhanced chemical vapor deposition (RF-PECVD). The growth catalyst of Ni_3C-Ni at the tip of the MWCNTs array was observed by transmission electron microscope (TEM) and selected area electron diffraction (SAED). The sensing properties of MWCNTs arrays to NO_2, H_2S, CH_3SH and C_8H_10 were investigated at operating temperature from 100 to 250 oC. The resistance change to sulfur gases was higher than NO_2 and C_8H_10. It was suggested that Ni at the tip was sulfidized to be Ni_xS in sulfur gas and that the p-n junction was formed at the interface between p-type MWCNTs and n-type Ni_xS.
citation_title	P-N Junction Effect of Multi-walled Carbon Nanotubes Array on Gas Detection
citation_author	Hashishin, Takeshi
	Omae, Masaki
	Yamamoto, Kazuhiro
	Kojima, Kazuo
	Tamaki, Jun
	Ohara, Satoshi
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2012-12
citation_journal_title	Transactions of JWRI
citation_volume	41
citation_issue	2
citation_firstpage	23
citation_lastpage	26
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/24859
citation_keywords	MWCNTs
	Ni_xS
	p-n junction

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