38 Result(s)

Article

Simulation of two-transistor parallel and series circuits for gas sensing validated by experimental data

Organic field effect transistors (OFETs) in parallel and series circuit configurations are simulated and tested for gas sensing activity. The devices are based on PQT12 and PQTS12 organic semiconductor thin fi...

W. Wondmagegn, Yingli Chu, Hui Li, Howard E. Katz… in Journal of Computational Electronics (2021)

Article

Injection and Interface-Dominated Nonlinear Resistors from Tin-Carbon Nanotube Junctions

This manuscript describes low-voltage epoxy-carbon nanotube composites with highly nonlinear resistances. Carbon nanotube paste was deposited on interdigitated electrodes and I-V characteristics were obtained ...

Toshiyuki Sato, Yoshitaka Kamata, Jian Song, Hui Li, Jiyuan Huang… in MRS Advances (2019)

Article

Effect of Nonionic Conjugated Matrix Polymer and P-Dopant on Carbon Nanotube Aggregation and Thermoelectric Properties

The properties of a mixed metallic and semiconducting carbon nanotube (CNT) sample dispersed in nonconjugated poly(methyl methacrylate) (PMMA) and conjugated poly(bisdodecylquaterthiophene) (PQT12) were compar...

Hui Li, Jiyuan Huang, Toshiyuki Sato, Paul Czubarow, Howard E. Katz in MRS Advances (2018)

Article

Reduced-temperature solution-processed transparent oxide low-voltage-operable field-effect transistors

Metal oxide-based transistors can be fabricated by low-cost, large-area solution processing methods, but involve a trade-off between low processing temperature, facile charge transport and high-capacitance/low...

Yu Liu, Kyle McElhinny, Olivia Alley, Paul G. Evans, Howard E. Katz in MRS Communications (2015)

Article

Synergistic thermoelectric power factor increase in films incorporating tellurium and thiophene-based semiconductors

Two thiophene-based semiconductors, a vapor-deposited small molecule and an amorphous polymer, as well as pentacene for comparison, show potential in enhancing the thermoelectric properties of tellurium (Te) n...

Jasmine Sinha, Robert M. Ireland, Stephen J. Lee, Howard E. Katz in MRS Communications (2013)

Chapter

Printed Organic Electronic Sensors

There has been great progress recently in the use of organic and carbon-based materials as the active conductors in electronic sensors for chemical species (analytes). Three principal classes of such materials...

Hoyoul Kong, Thomas J. Dawidczyk, Recep Ozgun… in Autonomous Sensor Networks (2013)

Article

Thiophene Oligomer and NTCDI Semiconductors with High Field-effect Transistor On/off Ratios

Howard E. Katz, Andrew J. Lovinger, X. Michael Hong… in MRS Online Proceedings Library (2011)

Article

Bisperfluorophenyl-Substituted Thiophene Oligomers. Organic Semiconductors with Complementary-Type Carrier Mobility

The design, synthesis, and properties of two mixed perfluorophenyl-thiophene oligomers 5,5″′-diperfluorophenyl-2,2′:5′,2″:5″,2″′:5″′,2″″:5″″,2″″′-quaterthiophene (2) and 5,5′-bis{1-[4-(thien-2-yl)-2,3,5,6-tetrafl...

Antonio Facchetti, Howard E. Katz, Tobin J. Marks in MRS Online Proceedings Library (2011)

Article

Batteries and charge storage devices based on electronically conducting polymers

Strong interest in energy generation and storage has yielded excellent progress on organic based solar cells, and there is also a strong desire for equivalent advancement in polymer-based charge storage device...

Howard E. Katz, Peter C. Searson, Theodore O. Poehler in Journal of Materials Research (2010)

Article

Solution-deposited sodium beta-alumina gate dielectrics for low-voltage and transparent field-effect transistors

Sodium beta-alumina (SBA) has high two-dimensional conductivity, owing to mobile sodium ions in lattice planes, between which are insulating AlO_x layers. SBA can provide high capacitance perpendicular to the plan...

Bhola N. Pal, Bal Mukund Dhar, Kevin C. See, Howard E. Katz in Nature Materials (2009)

Article

Organic Semiconductor Devices with Enhanced Field and Environmental Responses for Novel Applications

We discuss some recent advances in the use of organic semiconductor devices with additional or enhanced functionality beyond simple electrical switching. These include diodes that act as local temperature sens...

Takao Someya, Bholanath Pal, Jia Huang, Howard E. Katz in MRS Bulletin (2008)

Article

Solution-deposited ZnO-organic diodes with high current density and high frequency rectification under ambient conditions

n-ZnO/p-Pentacene and n-ZnO/poly(bis(dodecyl)quaterthiophene) (p-PQT-12) vertical p-n junction diodes were prepared on ITO-coated glass. A continuous film of ZnO nanoparticles was grown on the ITO glass by dip...

Bhola N. Pal, Jia Sun, Byung Jun Jung, Howard E. Katz in MRS Online Proceedings Library (2008)

Article

Pentacene Transistors with Polymer Gate Dielectrics on Metallized Optical Fibers

It is difficult to deposit a very thin polymer layer onto a fiber-shaped substrate from solution because the high interfacial energy can lead to dewetting. This difficulty presents itself when attempting to ap...

Jimmy Granstrom, Howard E. Katz in MRS Online Proceedings Library (2005)

Article

Pentacene Transistors with Polymer Gate Dielectrics on Metallized Optical Fibers

It is difficult to deposit a very thin polymer layer onto a fiber-shaped substrate from solution because the high interfacial energy can lead to dewetting. This difficulty presents itself when attempting to ap...

Jimmy Granstrom, Howard E. Katz in MRS Online Proceedings Library (2004)