scholarly journals A Review on Solution-Processed Organic Phototransistors and Their Recent Developments

2021 ◽  
Author(s):  
Aybuke Tavasli ◽  
Betul Gurunlu ◽  
Dilara Gunturkun ◽  
Recep Isci ◽  
Sheida Faraji
Keyword(s):  
Field Effect Transistors ◽  
Point Of Care ◽  
Incident Light ◽  
Real Life ◽  
Medical Diagnostics ◽  
Organic Field Effect Transistors ◽  
Electrode Structure ◽  
Device Structure ◽  
Recent Developments ◽  
Reduction Characteristics

Today, more disciplines are intercepting each other, giving rise to “cross-disciplinary” research. Technological advancements in material science and device structure and production have paved the way towards development of new classes of multi-purpose sensory devices. Organic phototransistors (OPTs) are photo-activated sensors based on organic field-effect transistors that convert incident light signals into electrical signals. The organic semiconductor (OSC) layer and three-electrode structure of an OPT offer great advantages for light detection compared to conventional photodetectors and photodiodes, due to their signal amplification and noise reduction characteristics. Solution processing of the active layer enables mass production of OPT devices at significantly reduced cost. The chemical structure of OSCs can be modified accordingly to fulfil detection at various wavelengths for different purposes. Organic phototransistors have attracted substantial interest in a variety of fields, namely biomedical, medical diagnostics, healthcare, energy, security, and environmental monitoring. Lightweight and mechanically flexible and wearable OPTs are suitable alternatives not only at clinical levels but also for point-of-care and home-assisted usage. In this review, we aim to explain different types, working mechanism and figures of merit of organic phototransistors and highlight the recent advances from the literature on development and implementation of OPTs for a broad range of research and real-life applications.

scholarly journals Recent Developments of the Solution-Processable and Highly Conductive Polyaniline Composites for Optical and Electrochemical Applications

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1965 ◽  
Author(s):  
Sunghun Cho ◽  
Jun Seop Lee ◽  
Hyeonseo Joo
Keyword(s):  
Thin Film ◽  
Electromagnetic Interference ◽  
High Performance ◽  
Field Effect Transistors ◽  
Effective Means ◽  
Organic Field Effect Transistors ◽  
Recent Developments ◽  
Solution Processable ◽  
Thin Film Electrodes ◽  
Polyaniline Composites

Solution-processable conducting polymers (CPs) are an effective means for producing thin-film electrodes with tunable thickness, and excellent electrical, electrochemical, and optical properties. Especially, solution-processable polyaniline (PANI) composites have drawn a great deal of interest due to of their ease of film-forming, high conductivity up to 103 S/cm, excellent redox behaviors, processability, and scalability. In this review, basic principles, fabrication methods, and applications of solution-processable PANI composites will be discussed. In addition, recent researches on the PANI-based electrodes for solar cells (SCs), electrochromic (EC) windows, thermoelectric (TE) materials, supercapacitors, sensors, antennas, electromagnetic interference (EMI) shielding, organic field-effect transistors (OFETs), and anti-corrosion coatings will be discussed. The presented examples in this review will offer new insights in the design and fabrication of high-performance electrodes from the PANI composite solutions for the development of thin-film electrodes for state-of-art applications.

scholarly journals Vinylene and benzo[c][1,2,5]thiadiazole: effect of the π-spacer unit on the properties of bis(2-oxoindolin-3-ylidene)-benzodifuran-dione containing polymers for n-channel organic field-effect transistors

RSC Advances ◽  
2018 ◽  
Vol 8 (68) ◽  
pp. 38919-38928
Author(s):  
Thu Trang Do ◽  
Basanagouda B. Patil ◽  
Samarendra P. Singh ◽  
Soniya D. Yambem ◽  
Krishna Feron ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors ◽  
Device Structure ◽  
Polymer Semiconductors ◽  
Top Contact ◽  
Bottom Gate

Bottom-gate-top-contact OFET device structure using PBIBDF-TVT and PBIBDF-TBT based polymer semiconductors.

Liquid Crystal-Gated-Organic Field-Effect Transistors with In-Plane Drain–Source–Gate Electrode Structure

2014 ◽  
Vol 7 (1) ◽  
pp. 504-510 ◽  
Author(s):  
Jooyeok Seo ◽  
Sungho Nam ◽  
Jaehoon Jeong ◽  
Chulyeon Lee ◽  
Hwajeong Kim ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors ◽  
Gate Electrode ◽  
Electrode Structure

scholarly journals Effect of contact resistance in organic field‐effect transistors

Nano Select ◽  
2021 ◽  
Author(s):  
Yanjun Shi ◽  
Jie Liu ◽  
Yuanyuan Hu ◽  
Wenping Hu ◽  
Lang Jiang
Keyword(s):  
Contact Resistance ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors

scholarly journals Revisiting Electrochemical Biosensing in the 21st Century Society for Inflammatory Cytokines Involved in Autoimmune, Neurodegenerative, Cardiac, Viral and Cancer Diseases

Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 189
Author(s):  
Susana Campuzano ◽  
Paloma Yáñez-Sedeño ◽  
José Manuel Pingarrón
Keyword(s):  
Point Of Care ◽  
Low Cost ◽  
Accurate Determination ◽  
Test Time ◽  
Electrochemical Biosensing ◽  
Recent Developments ◽  
Inflammatory Processes ◽  
Human Skills ◽  
Cancer Diseases

The multifaceted key roles of cytokines in immunity and inflammatory processes have led to a high clinical interest for the determination of these biomolecules to be used as a tool in the diagnosis, prognosis, monitoring and treatment of several diseases of great current relevance (autoimmune, neurodegenerative, cardiac, viral and cancer diseases, hypercholesterolemia and diabetes). Therefore, the rapid and accurate determination of cytokine biomarkers in body fluids, cells and tissues has attracted considerable attention. However, many currently available techniques used for this purpose, although sensitive and selective, require expensive equipment and advanced human skills and do not meet the demands of today’s clinic in terms of test time, simplicity and point-of-care applicability. In the course of ongoing pursuit of new analytical methodologies, electrochemical biosensing is steadily gaining ground as a strategy suitable to develop simple, low-cost methods, with the ability for multiplexed and multiomics determinations in a short time and requiring a small amount of sample. This review article puts forward electrochemical biosensing methods reported in the last five years for the determination of cytokines, summarizes recent developments and trends through a comprehensive discussion of selected strategies, and highlights the challenges to solve in this field. Considering the key role demonstrated in the last years by different materials (with nano or micrometric size and with or without magnetic properties), in the design of analytical performance-enhanced electrochemical biosensing strategies, special attention is paid to the methods exploiting these approaches.

Isomeric Dibenzoheptazethrenes for Air‐stable Organic Field‐effect Transistors

2021 ◽  
Author(s):  
Chaoyang Zong ◽  
Xiaoting Zhu ◽  
Zhanqiang Xu ◽  
Lifeng Zhang ◽  
Jun Xu ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors
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