Printable ammonia sensor based on organic field effect transistor

Besar, Kalpana; Yang, Shyuan; Guo, Xin; Huang, Weiguo; Rule, Ana M.; Breysse, Patrick N.; Kymissis, Ioannis; Katz, Howard E.

doi:10.1016/j.orgel.2014.08.023

Cited by 48 publications

(27 citation statements)

References 44 publications

(38 reference statements)

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“…This device fabrication process is herein simplified and potentially adaptable to roll-to-roll processing. With V DS = −90 V and static gate induced by corona charging, poly(3,3’-didodecylquaterthiophene) (PQT-12) sensor based on this device structure gave a reasonable detection limit of 100 ppb [ 23 ]. Vertical transistor, whose current flows through the bulk region in the vertical channel, creates improved interaction between gas analyte and conducting channel.…”

Section: Polymer Field-effect Transistor (Pfet) Sensors With Semicmentioning

confidence: 99%

Gas Sensors Based on Polymer Field-Effect Transistors

Pan

Chi

2017

Sensors

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This review focuses on polymer field-effect transistor (PFET) based gas sensor with polymer as the sensing layer, which interacts with gas analyte and thus induces the change of source-drain current (ΔISD). Dependent on the sensing layer which can be semiconducting polymer, dielectric layer or conducting polymer gate, the PFET sensors can be subdivided into three types. For each type of sensor, we present the molecular structure of sensing polymer, the gas analyte and the sensing performance. Most importantly, we summarize various analyte–polymer interactions, which help to understand the sensing mechanism in the PFET sensors and can provide possible approaches for the sensor fabrication in the future.

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Section: Polymer Field-effect Transistor (Pfet) Sensors With Semicmentioning

confidence: 99%

Gas Sensors Based on Polymer Field-Effect Transistors

Pan

Chi

2017

Sensors

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“…Noticeable materials for ammonia-sensing OFETs include various p-type polymers, such as poly(3-hexylthiophene) (P3HT), poly(2,5-bis(3-tetradecylthiophen-2-yl) thieno [3,2-b]thiophene) (PBTTT), poly(3,3 -didodecylquarterthiophene) (PQT-12), and poly [2,5-bis(7-decylnonadecyl)pyrrolo [3,4-c]pyrrole-1,4(2H,5H)-dione-(E)-1,2-bis(5-(thiophen-2-yl) selenophen-2-yl)ethene] (P-29-DPP-SVS) [9][10][11][12][13]22,[25][26][27][28][29]. Surface morphologies of OFETs based on P3HT or PBTTT films have been tuned for enhanced ammonia-sensing capability [22,28].…”

Section: Introductionmentioning

confidence: 99%

“…OFETs based on single-crystalline nanowires of P3HT have showed a high sensitivity to ammonia at a concentration as low as 0.01 ppm [11]. A processing method compatible to roll-to-roll fabrication has been applied to OFET-based ammonia sensors on a plastic substrate with a detection limit of~0.1 ppm [26]. Blending of P3HT with polystyrene (PS) has been reported as a promising strategy for ammonia gas sensing applications [27].…”

Section: Introductionmentioning

confidence: 99%

Selective Ammonia-Sensing Platforms Based on a Solution-Processed Film of Poly(3-Hexylthiophene) and p-Doping Tris(Pentafluorophenyl)Borane

Meresa

Kim

2020

Polymers

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Here, we fabricate ammonia sensors based on organic transistors by using poly(3-hexylthiophene) (P3HT) blended with tris(pentafluorophenyl)borane (TPFB) as an active layer. As TPFB is an efficient p-type dopant for P3HT, the current level of the blend films can be easily modulated by controlling the blend ratio. The devices exhibit significantly increased on-state and off-state current levels owing to the ohmic current originated from the large number of charge carriers when the active polymer layer contains TPFB with concentrations up to 20 wt % (P3HT:TPFB = 8:2). The current is decreased at 40 wt % of TPFB (P3HT:TPFB = 6:4). The P3HT:TPFB blend with a weight ratio of 9:1 exhibits the highest sensing performances for various concentrations of ammonia. The device exhibits an increased percentage current response compared to that of a pristine P3HT device. The current response of the P3HT:TPFB (9:1) device at 100 ppm of ammonia is as high as 65.8%, 3.2 times that of the pristine P3HT (20.3%). Furthermore, the sensor based on the blend exhibits a remarkable selectivity to ammonia with respect to acetone, methanol, and dichloromethane, owing to the strong interaction between the Lewis acid (TPFB) and Lewis base (ammonia).

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“…Recently, among solution processable organic conjugated molecules [11][12][13][14][15][16][17] namely poly[2,5-bis (3-tetradecylthiophen-2-yl)thieno [3,2-b]thiophene] (PBTTT) has evolved as promising conducting polymer having immense scientific interest 13,[18][19][20][21] . It has added advantage of formation of self-organized, ordered structures with superior charge transfer characteristics via π-π stacking and presence of alkyl side chains [22][23][24] .…”

mentioning

confidence: 99%

“…It is worth full to mention here that the practical implementation of these nanohybrid materials in large area, flexible electronic devices and their applications is directly associated with the capability of producing materials at a cost which is significantly below with respect to traditional electronic devices/sensors design. Contemporary, the existing challenges being faced during fabricating the thin film via several techniques like bar-coating 25 , spin coating [26][27][28] , drop casting 12,[29][30][31] , LB technique [32][33][34] etc., we have introduced a very facile thin film processing methodology for solution processable conjugated composite polymer matrices. Several researches for NO 2 gas detection is carried out and the authors are come up with final conclusion of film thickness also govern sensitivity with the target analyte.…”

mentioning

confidence: 99%

Polymer/Graphene oxide nanocomposite thin film for NO2 sensor: An in situ investigation of electronic, morphological, structural, and spectroscopic properties

Sahu

Pandey

Dwivedi

et al. 2020

Sci Rep

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The higher operating temperature of metal oxide and air instability of organic based NO2 sensor causes extremely urgent for development of a reliable low cost sensor to detect NO2 at room temperature. Therefore, we present a fabrication of large area Polymer/GO nano hybrid thin film for polymer thin film transistors (PTFTs) based NO2 sensors assisted via facile method named ‘spreading-solidifying (SS) method’, grown over air/liquid interface and successive investigation of effect of NO2 on film via several characterizations. The PTFTs sensor has demonstrated swift and high response towards low concentration of NO2 gas with air stability and provided real time non-invasive type NO2 sensor. Herein, we are reporting the nanohybrid PBTTT/GO composite based PTFT sensor with good repeatability and sensor response for low concentration NO2. The thin film grown via SS technique has reported very good adsorption/desorption of target analyte having response/recovery time of 75 s/523 s for 10 ppm concentration of NO2 gas. It has been observed that % change in drain current (sensor response) saturated with increasing concentration of NO2. The transient analysis demonstrates the fast sensor response and recovery time. Furthermore, in order to understand the insight of high performance of sensor, effect of NO2 on nanohybrid film and sensing mechanism, an in situ investigations was conducted via multiple technique viz. spectral, electronic, structural, and morphological characterization. Finally, the performance of sensor and the site of adsorption of NO2 at polymer chains were argued using schematic diagram. This work shows the simple fabrication process for mass production, low cost and room temperature operated gas sensors for monitoring the real-time environment conditions and gives an insight about the sensing mechanism adsorption site of NO2.

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Printable ammonia sensor based on organic field effect transistor

Cited by 48 publications

References 44 publications

Gas Sensors Based on Polymer Field-Effect Transistors

Gas Sensors Based on Polymer Field-Effect Transistors

Selective Ammonia-Sensing Platforms Based on a Solution-Processed Film of Poly(3-Hexylthiophene) and p-Doping Tris(Pentafluorophenyl)Borane

Polymer/Graphene oxide nanocomposite thin film for NO2 sensor: An in situ investigation of electronic, morphological, structural, and spectroscopic properties

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