The Effect of Various Gases Exposure on Electrical Characterizations of Liquid Crystalline Organic TFTs

We have studied organic TFTs (OTFTs) made from a liquid crystalline organic semiconductor of C13-BTBT to clarify the influence of the atmosphere on TFT operations. OTFTs fabricated by solution processes are electrically characterized under various ambient gases. It is proved that electric properties...

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Published inProceedings of Japanese Liquid Crystal Society Annual meeting p. 41
Main Authors SATO, Shinya, OZAKI, Toru, HOURYU, Takeshi, OKAMOTO, Kazuo, OGINO, Kenji, IIMURA, Yasufumi
Format Journal Article
LanguageJapanese
Published THE JAPANESE LIQUID CRYSTAL SOCIETY 2011
Subjects
field-effect mobility
liquid crystalline organic semiconductor
thin film transistor
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Abstract We have studied organic TFTs (OTFTs) made from a liquid crystalline organic semiconductor of C13-BTBT to clarify the influence of the atmosphere on TFT operations. OTFTs fabricated by solution processes are electrically characterized under various ambient gases. It is proved that electric properties, such as field-effect-mobility, of the OTFTs strongly depend on the species of ambient gases. OTFTs kept in oxygen show a gradual decrease and then increase in the mobility, and further the mobility of OTFTs kept in the gas containing oxidizer is drastically improved with storage time, which is a similar behavior of OTFTs kept in the air under the light illumination. These results suggest the light-enhanced oxidation play an important role to improve electrical properties of OTFTs of C13-BTBT.
AbstractList We have studied organic TFTs (OTFTs) made from a liquid crystalline organic semiconductor of C13-BTBT to clarify the influence of the atmosphere on TFT operations. OTFTs fabricated by solution processes are electrically characterized under various ambient gases. It is proved that electric properties, such as field-effect-mobility, of the OTFTs strongly depend on the species of ambient gases. OTFTs kept in oxygen show a gradual decrease and then increase in the mobility, and further the mobility of OTFTs kept in the gas containing oxidizer is drastically improved with storage time, which is a similar behavior of OTFTs kept in the air under the light illumination. These results suggest the light-enhanced oxidation play an important role to improve electrical properties of OTFTs of C13-BTBT.
Author HOURYU, Takeshi
OKAMOTO, Kazuo
OGINO, Kenji
IIMURA, Yasufumi
OZAKI, Toru
SATO, Shinya
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  fullname: OZAKI, Toru
  organization: Graduate School of Engineering, Tokyo University of A&T
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  fullname: HOURYU, Takeshi
  organization: Graduate School of Engineering, Tokyo University of A&T
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  fullname: OKAMOTO, Kazuo
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  fullname: OGINO, Kenji
  organization: Graduate School of Bio-Applications Systems and Engineering
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  fullname: IIMURA, Yasufumi
  organization: Graduate School of Engineering, Tokyo University of A&T
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Snippet We have studied organic TFTs (OTFTs) made from a liquid crystalline organic semiconductor of C13-BTBT to clarify the influence of the atmosphere on TFT...
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SubjectTerms field-effect mobility
liquid crystalline organic semiconductor
thin film transistor
Title The Effect of Various Gases Exposure on Electrical Characterizations of Liquid Crystalline Organic TFTs
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