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

Hashishin, Takeshi; Omae, Masaki; Yamamoto, Kazuhiro et al.

Transactions of JWRI, 2012, 41(2), 23-26

アクセス数:595件（2025-07-09 23:08 集計）

固定URL: https://doi.org/10.18910/24859

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タイトル
P-N Junction Effect of Multi-walled Carbon Nanotubes Array on Gas Detection
著者
NRID
1000020336184 1000020336184
著者名
Hashishin, Takeshi
著者名
Omae, Masaki
著者名
Yamamoto, Kazuhiro
著者名
Kojima, Kazuo
著者名
Tamaki, Jun
NRID
1000000396532 1000000396532
ORCID
0000-0002-6346-0798 0000-0002-6346-0798
researchmap permalink
ohara001 ohara001
著者名
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.
出版者
大阪大学接合科学研究所
オオサカ ダイガク セツゴウ カガク ケンキュウジョ
Joining and Welding Research Institute, Osaka University
収録物名
Transactions of JWRI
巻(号)
41(2)
ページ
23-26
刊行年月
2012-12
言語
英語
ハンドルURL
https://hdl.handle.net/11094/24859
DOI
https://doi.org/10.18910/24859
PISSN
03874508
NCID
AA00867058
アクセス権
open access
出版タイプ
Version of Record
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.41 No.2 (2012-12)