Effects of humidity on unencapsulated poly(thiophene) thin-film transistors

Michael L. Chabinyc; Fred Endicott; Bryan D. Vogt; Dean M. DeLongchamp; Eric K. Lin; Yiliang Wu; Ping Liu; Beng S. Ong

doi:10.1063/1.2181206

Effects of humidity on unencapsulated poly(thiophene) thin-film transistors

Michael L. Chabinyc, Fred Endicott, Bryan D. Vogt, Dean M. DeLongchamp, Eric K. Lin, Yiliang Wu, Ping Liu, Beng S. Ong

Chemical Engineering

Research output: Contribution to journal › Article › peer-review

68 Scopus citations

Abstract

The effects of humidity on unencapsulated polymeric thin-film transistors (TFTs) of poly[5,5'-bis(3-dodecyl-2-thienyl)-2,2'-bithiophene] (PQT-12) were investigated. The field effect mobility of PQT-12 TFTs decreases and the rate of trapping of charge carriers increases under increasing humidity. The amount of water absorbed by the PQT-12 films was measured using a quartz crystal microbalance. Thin films of PQT-12 absorb comparable amounts of water to the carrier concentration in TFTs under routine operating conditions (humidity of 30% relative humidity and gate voltage of -30 V); the changes in electrical characteristics under humid atmospheres are attributed to the interaction of absorbed water with the carriers in the film.

Original language	English (US)
Article number	113514
Journal	Applied Physics Letters
Volume	88
Issue number	11
DOIs	https://doi.org/10.1063/1.2181206
State	Published - 2006

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2181206

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@article{5c5fd43e3360464483350faaab40f832,

title = "Effects of humidity on unencapsulated poly(thiophene) thin-film transistors",

abstract = "The effects of humidity on unencapsulated polymeric thin-film transistors (TFTs) of poly[5,5'-bis(3-dodecyl-2-thienyl)-2,2'-bithiophene] (PQT-12) were investigated. The field effect mobility of PQT-12 TFTs decreases and the rate of trapping of charge carriers increases under increasing humidity. The amount of water absorbed by the PQT-12 films was measured using a quartz crystal microbalance. Thin films of PQT-12 absorb comparable amounts of water to the carrier concentration in TFTs under routine operating conditions (humidity of 30% relative humidity and gate voltage of -30 V); the changes in electrical characteristics under humid atmospheres are attributed to the interaction of absorbed water with the carriers in the film.",

author = "Chabinyc, {Michael L.} and Fred Endicott and Vogt, {Bryan D.} and DeLongchamp, {Dean M.} and Lin, {Eric K.} and Yiliang Wu and Ping Liu and Ong, {Beng S.}",

note = "Funding Information: The authors gratefully acknowledge A. Salleo, and R. A. Street for useful discussions, and the process line at PARC for fabrication of the transistor substrates. One of the authors (D.M.D.) acknowledges support from the NIST-NRC postdoctoral program. This work was partially supported by the Advanced Technology Program of the National Institute of Standards and Technology (Contract No. 70NANB0H3033).",

year = "2006",

doi = "10.1063/1.2181206",

language = "English (US)",

volume = "88",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "11",

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TY - JOUR

T1 - Effects of humidity on unencapsulated poly(thiophene) thin-film transistors

AU - Chabinyc, Michael L.

AU - Endicott, Fred

AU - Vogt, Bryan D.

AU - DeLongchamp, Dean M.

AU - Lin, Eric K.

AU - Wu, Yiliang

AU - Liu, Ping

AU - Ong, Beng S.

N1 - Funding Information: The authors gratefully acknowledge A. Salleo, and R. A. Street for useful discussions, and the process line at PARC for fabrication of the transistor substrates. One of the authors (D.M.D.) acknowledges support from the NIST-NRC postdoctoral program. This work was partially supported by the Advanced Technology Program of the National Institute of Standards and Technology (Contract No. 70NANB0H3033).

PY - 2006

Y1 - 2006

N2 - The effects of humidity on unencapsulated polymeric thin-film transistors (TFTs) of poly[5,5'-bis(3-dodecyl-2-thienyl)-2,2'-bithiophene] (PQT-12) were investigated. The field effect mobility of PQT-12 TFTs decreases and the rate of trapping of charge carriers increases under increasing humidity. The amount of water absorbed by the PQT-12 films was measured using a quartz crystal microbalance. Thin films of PQT-12 absorb comparable amounts of water to the carrier concentration in TFTs under routine operating conditions (humidity of 30% relative humidity and gate voltage of -30 V); the changes in electrical characteristics under humid atmospheres are attributed to the interaction of absorbed water with the carriers in the film.

AB - The effects of humidity on unencapsulated polymeric thin-film transistors (TFTs) of poly[5,5'-bis(3-dodecyl-2-thienyl)-2,2'-bithiophene] (PQT-12) were investigated. The field effect mobility of PQT-12 TFTs decreases and the rate of trapping of charge carriers increases under increasing humidity. The amount of water absorbed by the PQT-12 films was measured using a quartz crystal microbalance. Thin films of PQT-12 absorb comparable amounts of water to the carrier concentration in TFTs under routine operating conditions (humidity of 30% relative humidity and gate voltage of -30 V); the changes in electrical characteristics under humid atmospheres are attributed to the interaction of absorbed water with the carriers in the film.

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DO - 10.1063/1.2181206

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VL - 88

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 11

M1 - 113514

ER -

Effects of humidity on unencapsulated poly(thiophene) thin-film transistors

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