Printable Ammonia Sensor Based on Organic Field Effect Transistor

Abstract We report an organic field-effect transistor (OFET)-based sensor made from printable materials with an unusually high sensitivity of 0.5 ppm v/v for ammonia and with limit of detection on the order of 0.1 ppm v/v. The device developed has a polyethylene terephthalate (PET) substrate, bottom contacts, and poly ( 3 , 3 ‴ -didodecylquaterthiophene) (PQT-12) cast from 4 mg/mL cholorobenzene solution as active semiconductor. The fabrication process is simplified by replacing the gate electrode and dielectric deposition steps with the introduction of static charges on the back surface of the PET substrate by corona charging, a procedure that is adaptable to roll-to-roll processing. Hydrophobic polymers applied to the back surface stabilize this charge, providing evidence for their activity at that location. In the proposed sensor, these static charges are used as a static gate, reducing the OFET architecture to a chemiresistor. The sensor is selective for ammonia over common organic solvent vapors, and the response is generally reversible. The device also demonstrates memory behavior required for dosimetric sensors when kept at low temperature (4 °C to −30 °C). A converse response from an n-channel semiconductor is also reported.

[1]  M. Ieda,et al.  Surface Potential Decay in Polyethylene , 1981 .

[2]  P. Chakrabarti,et al.  Poly-3-hexylthiophene based organic field-effect transistor: Detection of low concentration of ammonia , 2012 .

[3]  Y. M. Poon,et al.  Characteristics of Corona-Charged PET Sandwich Electrets , 2005 .

[4]  A. Berg,et al.  Ammonia sensors and their applications - a review , 2005 .

[5]  Chao Jiang,et al.  Novel top-contact monolayer pentacene-based thin-film transistor for ammonia gas detection. , 2014, ACS applied materials & interfaces.

[6]  B. A. López de Mishima,et al.  Ammonia sensor based on propylene carbonate , 2008 .

[7]  G. Rutledge,et al.  Electrospun Polyaniline Fibers as Highly Sensitive Room Temperature Chemiresistive Sensors for Ammonia and Nitrogen Dioxide Gases , 2014 .

[8]  Max Goldman,et al.  Surface potential decay on corona-charged epoxy samples due to polarization processes , 1995 .

[9]  Lifeng Chi,et al.  High Performance Field‐Effect Ammonia Sensors Based on a Structured Ultrathin Organic Semiconductor Film , 2013, Advanced materials.

[10]  V. Bulović,et al.  Engineering density of semiconductor-dielectric interface states to modulate threshold voltage in OFETs , 2006, IEEE Transactions on Electron Devices.

[11]  Zhixiang Wei,et al.  Probing the sensory property of perylenediimide derivatives in hydrazine gas: core-substituted aromatic group effect. , 2014, ACS applied materials & interfaces.

[12]  Xinge Yu,et al.  Polymer dielectric layer functionality in organic field-effect transistor based ammonia gas sensor , 2013 .

[13]  H. Berlepsch,et al.  Interpretation of surface potential kinetics in HDPE by a trapping model , 1985 .

[14]  Il Ki Han,et al.  The response characteristics of a gas sensor based on poly-3-hexylithiophene thin-film transistors , 2010 .

[15]  H. Katz,et al.  Monolayer‐Dimensional 5,5′‐Bis(4‐hexylphenyl)‐2,2′‐bithiophene Transistors and Chemically Responsive Heterostructures , 2008 .

[16]  L. Dascalescu,et al.  Factors that influence the surface potential decay on a thin film of polyethylene terephthalate (PET) , 2009 .

[17]  Torahiko Ando,et al.  Field-effect transistor with polythiophene thin film , 1987 .

[18]  N. Tamaoki,et al.  Palladium-catalyzed C-H homocoupling of bromothiophene derivatives and synthetic application to well-defined oligothiophenes. , 2006, Journal of the American Chemical Society.

[19]  H. Katz,et al.  Organic transistors in the new decade: Toward n-channel, printed, and stabilized devices , 2012 .

[20]  S. Nedev,et al.  Influence of gas media on the stability of corona charged polyethylenterephtalate films stored at low pressure , 2012, IEEE Transactions on Dielectrics and Electrical Insulation.

[21]  H. Katz,et al.  Highly sensitive NH3 detection based on organic field-effect transistors with tris(pentafluorophenyl)borane as receptor. , 2012, Journal of the American Chemical Society.

[22]  Yasunori Takeda,et al.  Fully Solution-Processed Flexible Organic Thin Film Transistor Arrays with High Mobility and Exceptional Uniformity , 2014, Scientific Reports.

[23]  E. A. Baum,et al.  The lateral motion of charge on thin films of polyethylene terephthalate , 1978 .

[24]  Gilles Horowitz,et al.  High‐Performance Organic Field‐Effect Transistors , 2009 .

[25]  V. Bulović,et al.  Tunable threshold voltage and flatband voltage in pentacene field effect transistors , 2006 .

[26]  Robert P. H. Chang,et al.  Flexible spray-coated TIPS-pentacene organic thin-film transistors as ammonia gas sensors , 2013 .

[27]  K. Müllen,et al.  Benzotrithiophene-based donor-acceptor copolymers with distinct supramolecular organizations. , 2012, Journal of the American Chemical Society.

[28]  W. Rom,et al.  Chronic lung disease secondary to ammonia inhalation injury: a report on three cases. , 1996, American journal of industrial medicine.

[29]  Zhiqiang Xu,et al.  Decay of electric charge on corona charged polyethylene , 2007 .

[30]  E. A. Baum,et al.  Decay of electrical charge on polyethylene films , 1977 .

[31]  H. Kempa,et al.  Tuning of threshold voltage in organic field-effect transistors with hydrophobic gate dielectric using monoenergetic low-energy electron beams and triode corona , 2009 .

[32]  N. Alizadeh,et al.  Optical ammonia gas sensor based on nanostructure dye-doped polypyrrole , 2013 .

[33]  K. Keiji Kanazawa,et al.  Discharge Characteristics of Photoconducting Insulators , 1970 .

[34]  Thomas J. Dawidczyk,et al.  Visualizing and quantifying charge distributions correlated to threshold voltage shifts in lateral organic transistors. , 2014, ACS nano.

[35]  B. Kovács,et al.  Fabrication of optical chemical ammonia sensors using anodized alumina supports and sol-gel method. , 2013, Talanta.

[36]  M. Nemamcha,et al.  Decay of Electrical Charges on Polyethylene Terephthalate Surface , 2009 .

[37]  M. Kaltenbrunner,et al.  An ultra-lightweight design for imperceptible plastic electronics , 2013, Nature.

[38]  X. Qiu,et al.  The storage and its stability of space charge in poly(ethylene naphthalene-2,6-dicarboxylate) , 2006 .

[39]  D. K. Aswal,et al.  Room temperature ammonia sensor based on jaw like bis-porphyrin molecules , 2013 .

[40]  Z. Xia,et al.  Charge dynamics in Mylar films corona-charged at various temperatures , 1992 .

[41]  Thomas D Anthopoulos,et al.  Air‐Stable and High‐Mobility n‐Channel Organic Transistors Based on Small‐Molecule/Polymer Semiconducting Blends , 2012, Advanced materials.

[42]  H. Katz,et al.  Digital‐Inverter Amine Sensing via Synergistic Responses by n and p Organic Semiconductors , 2011, Advanced functional materials.

[43]  P. Molinié.  Charge injection in corona-charged polymeric films: potential decay and current measurements , 1999 .

[44]  Yan Li,et al.  Heteroarenes as high performance organic semiconductors. , 2013, Chemical Society reviews.

[45]  E. Richter,et al.  Chronic Ammonia Inhalation and Interstitial Pulmonary Fibrosis: A Case Report and Review of the Literature , 2003, Archives of environmental health.