Gas sensing characteristics of copper phthalocyanine films: effects of film thickness and sensing temperature

Lee, Yuh Lang; Sheu, C.; Hsiao, R.

doi:10.1016/j.snb.2003.11.024

Cited by 76 publications

(59 citation statements)

References 23 publications

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“…[2][3][4][5][6][7] Such monolayers are promising candidates for novel catalytic [8][9][10][11][12] and gas sensing applications. [13][14][15][16][17][18][19][20][21][22][23][24][25][26] Their function will depend critically on the molecular electronic structure, which for phthalocyanines containing certain transition metals (such as Cr, Mn, Fe, Co) is quite complex with an open shell structure of the d orbitals and a number of energetically close-lying electronic states. These states can easily be modified by, e.g., changes in the structure of the support surface and the addition of molecular functional groups, but also, as pursued here, by the adsorption of further ligands.…”

Section: Introductionmentioning

confidence: 99%

Ammonia adsorption on iron phthalocyanine on Au(111): Influence on adsorbate–substrate coupling and molecular spin

Isvoranu

Wang

Ataman

et al. 2011

The Journal of Chemical Physics

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The adsorption of ammonia on Au(111)-supported monolayers of iron phthalocyanine has been investigated by x-ray photoelectron spectroscopy, x-ray absorption spectroscopy, and density functional theory calculations. The ammonia-induced changes of the x-ray photoemission lines show that a dative bond is formed between ammonia and the iron center of the phthalocyanine molecules, and that the local spin on the iron atom is quenched. This is confirmed by density functional theory, which also shows that the bond between the iron center of the metalorganic complex and the Au (111) substrate is weakened upon adsorption of ammonia. The experimental results further show that additional adsorption sites exist for ammonia on the iron phthalocyanine monolayer.

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Section: Introductionmentioning

confidence: 99%

Ammonia adsorption on iron phthalocyanine on Au(111): Influence on adsorbate–substrate coupling and molecular spin

Isvoranu

Wang

Ataman

et al. 2011

The Journal of Chemical Physics

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“…Due to the straightforward and fast growing nature of this technique, together with large surface/volume ratio and island/porous structure of films, spin-coating technique is widely used to fabricate the phthalocyanine thin films [4]. Previous studies have shown that the sensing, optical, and structural properties of a phthalocyanine films are affected by the film characteristics, such as crystal structure, film morphology and film thickness [5].Due to the insolubility of the unsubstituted phthalocyanines in common organic solvents, thin film samples were prepared mainly by thermal evaporation [6]. The solubility of phthalocyanines can be increased by attaching peripheral or non-peripheral substituents such as alkyl, alkoxy, phenoxy and macrocylic groups and/or the central metal.…”

mentioning

confidence: 99%

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confidence: 99%

Zinc(II)phthalocyanine as an optical window for visible region

Özçeşmeci

Sorar

Gül

2011

Inorganic Chemistry Communications

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“…Penelitian ini menggunakan sensor semi-konduktor organik karena memiliki kelebihan dapat dioperasikan pada temperatur rendah di bawah 200°C bahkan pada suhu kamar dan memiliki sensitivitas tinggi [6] selain itu biaya pembuatan dan perawatannya lebih murah dan mudah [7].…”

Section: Pendahuluanunclassified

Pengaruh Ketebalan Terhadap Nilai Resistansi Lapisan Tipis Seng Sulfoftalosianin (ZnPcSn) Sebagai Prototipe Detektor Ozon

Novitasari

Masruroh

Tjahjanto

2015

Nat-B

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ABSTRAKLapisan tipis ZnPcSn dapat dikembangkan sebagai prototipe detektor gas ozon. Penelitian ini bertujuan untuk mempelajari hubungan antara ketebalan dan nilai resistansi lapisan tipis ZnPcSn pada paparan ozon. Lapisan tipis ZnPcSn dideposisikan pada substrat printed circuit board (PCB) dengan berbagai variasi ketebalan dengan teknik evaporasi vakum. Morfologi lapisan tipis diobservasi dengan scanning electron microscope (SEM). Foto SEM menunjukkan bahwa semakin tebal lapisan, maka poripori yang terbentuk semakin besar dan ketebalan lapisan semakin merata. Untuk memperoleh nilai resistansi, lapisan ZnPcSn dipapar dengan ozon selama 30 menit secara terus menerus. Semakin tebal lapisan ZnPcSn maka semakin banyak molekul ZnPcSn yang terdapat dalam lapisan, sehingga semakin besar interaksi dengan ozon dan menyebabkan penurunan nilai resistansi lapisan. Penurunan nilai resistansi ini mengindikasikan bahwa lapisan tipis ZnPcSn memiliki kemampuan sebagai detektor ozon.Kata kunci : lapisan tipis ZnPcSn, substrat PCB, evaporasi vakum, variasi ketebalan, ozon, nilai resistansi ABSTRACT Thin film of ZnPcSn was developed as a prototype for ozone detector. This study aimed to investigate the relationship thickness of thin film of ZnPcSn along with resistance value toward ozone exposure. The ZnPcSn thin film was deposited on a printed circuit board (PCB) substrate with various thickness using vacuum evaporation technique. The morphology of the thin film was observed using scanning electron microscope (SEM). The SEM images of ZnPcSn thin film showed that thicker layer of thin film leaded to greater pore and uniform distributed layer. To obtain the resistance value, ZnPcSn thin film was exposed to ozone for 30 minutes continuously. Ozone was synthesized by ozonator from air. Thicker film with higher ZnPcSn content had more intensive interaction with ozone. Higher interaction with ozone leaded to the increasing value of generated current, indicated by the decreasing of the thin film resistance value. This result demonstrated that the ZnPcSn thin film has promising potential as ozone detector.

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Gas sensing characteristics of copper phthalocyanine films: effects of film thickness and sensing temperature

Cited by 76 publications

References 23 publications

Ammonia adsorption on iron phthalocyanine on Au(111): Influence on adsorbate–substrate coupling and molecular spin

Ammonia adsorption on iron phthalocyanine on Au(111): Influence on adsorbate–substrate coupling and molecular spin

Zinc(II)phthalocyanine as an optical window for visible region

Pengaruh Ketebalan Terhadap Nilai Resistansi Lapisan Tipis Seng Sulfoftalosianin (ZnPcSn) Sebagai Prototipe Detektor Ozon

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