Synthesis of organic semiconductor hexadecachloro zinc phthalocyanine and its gas sensitivity

Shi Yunbo; Lei Tingping; Li Zan; Xiu Debin; Zhao Wenjie; Feng Qiaohua; Wang Liquan

doi:10.1088/1674-4926/30/3/034009

J. Semicond. > 2009, Volume 30 > Issue 3 > 034009

SEMICONDUCTOR DEVICES

Synthesis of organic semiconductor hexadecachloro zinc phthalocyanine and its gas sensitivity

Shi Yunbo, Lei Tingping, Li Zan, Xiu Debin, Zhao Wenjie, Feng Qiaohua and Wang Liquan

+ Author Affiliations

DOI: 10.1088/1674-4926/30/3/034009

Abstract: Due to the difficulty in synthesizing perhalogenated metallophthalocyanine, the method of ammonium molybdate solid phase catalysis was introduced, and by using tetrachlorophthalic anhydride and urea as the raw materials, hexadecachloro zinc phthalocyanine (ZnPcCl16) was synthesized. Components of the composite were analyzed by energy spectrum, and its functional group structures and absorption peaks were characterized by IR and UV-vis spectroscopy. The thin films of gas sensors were prepared in a vacuum evaporation system and evaporated onto SiO2 substrates, where sensing electrodes were made by MEMS micromachining. The optimal conditions for the films are: substrate temperature of 150 ℃ evaporation current of 95 A and film thickness of 50 nm. The result showed that the sensors were ideally sensitive to Cl2 gas and could detect the minimum concentration of 0.3 ppm.

Key words: hexadecachloro zinc phthalocyanine, organic semiconductor, gas sensitivity

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Shi Yunbo, Lei Tingping, Li Zan, Xiu Debin, Zhao Wenjie, Feng Qiaohua, Wang Liquan. Synthesis of organic semiconductor hexadecachloro zinc phthalocyanine and its gas sensitivity[J]. Journal of Semiconductors, 2009, 30(3): 034009. doi: 10.1088/1674-4926/30/3/034009

Shi Y B, Lei T P, Li Z, Xiu D B, Zhao W J, Feng Q H, Wang L Q. Synthesis of organic semiconductor hexadecachloro zinc phthalocyanine and its gas sensitivity[J]. J. Semicond., 2009, 30(3): 034009. doi: 10.1088/1674-4926/30/3/034009.

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Received: 18 August 2015 Revised: 27 September 2008 Online: Published: 01 March 2009

Due to the difficulty in synthesizing perhalogenated metallophthalocyanine, the method of ammonium molybdate solid phase catalysis was introduced, and by using tetrachlorophthalic anhydride and urea as the raw materials, hexadecachloro zinc phthalocyanine (ZnPcCl16) was synthesized. Components of the composite were analyzed by energy spectrum, and its functional group structures and absorption peaks were characterized by IR and UV-vis spectroscopy. The thin films of gas sensors were prepared in a vacuum evaporation system and evaporated onto SiO2 substrates, where sensing electrodes were made by MEMS micromachining. The optimal conditions for the films are: substrate temperature of 150 ℃ evaporation current of 95 A and film thickness of 50 nm. The result showed that the sensors were ideally sensitive to Cl2 gas and could detect the minimum concentration of 0.3 ppm.

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