scholarly journals Convenient fabrication of conjugated polymer semiconductor nanotubes and their application in organic electronics

2018 ◽  
Vol 5 (8) ◽  
pp. 180868
Author(s):  
Lanchao Ma ◽  
Shuixing Dai ◽  
Xiaowei Zhan ◽  
Xinyang Liu ◽  
Yu Li
Keyword(s):  
Organic Solar Cells ◽  
Field Effect Transistors ◽  
Electronic Devices ◽  
Solution Concentration ◽  
Core Shell ◽  
Organic Electronic Devices ◽  
Organic Electronic ◽  
Light Emitting ◽  
Preparation Conditions ◽  
Polymer Semiconductor

Organic heterojunction is indispensable in organic electronic devices, such as organic solar cells, organic light-emitting diodes and so on. Fabrication of core–shell nanostructure provides a feasible and novel way to prepare organic heterojunction, which is beneficial for miniaturization and integration of organic electronic devices. Fabrication of nanotubes which constitute the core–shell structure in large quantity is the key for the realization of application. In this work, a simple and convenient method to prepare nanotubes using conjugated copolymer of perylene diimide and dithienothiophene (P(PDI-DTT)) was demonstrated. The relationship between preparation conditions (solvent atmosphere, solution concentration and pore diameter of templates) and morphology of nanostructure was studied systematically. P(PDI-DTT) nanotubes could be fabricated in regular shape and large quantity by preparing the solution with appropriate concentration and placing anodic aluminium oxide template with nanopore diameter of 200 nm in the solvent atmosphere. The tubular structure was confirmed by scanning electron microscopy. P(PDI-DTT) nanotubes exhibited electron mobility of 0.02 cm 2 V –1 s –1 in field-effect transistors under ambient condition. Light-emitting nanostructures were successfully fabricated by incorporating tetraphenylethylene into polymer nanotubes.

scholarly journals Waiting for Act 2: what lies beyond organic light-emitting diode (OLED) displays for organic electronics?

Nanophotonics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 31-40
Author(s):  
Stephen R. Forrest
Keyword(s):  
Organic Electronics ◽  
Light Emitting Diode ◽  
Electronic Devices ◽  
Organic Electronic Devices ◽  
Organic Electronic ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Semiconductor Thin Films ◽  
Display Technology

AbstractOrganic light-emitting diode (OLED) displays are now poised to be the dominant mobile display technology and are at the heart of the most attractive televisions and electronic tablets on the market today. But this begs the question: what is the next big opportunity that will be addressed by organic electronics? We attempt to answer this question based on the unique attributes of organic electronic devices: their efficient optical absorption and emission properties, their ability to be deposited on ultrathin foldable, moldable and bendable substrates, the diversity of function due to the limitless palette of organic materials and the low environmental impact of the materials and their means of fabrication. With these unique qualities, organic electronics presents opportunities that range from lighting to solar cells to medical sensing. In this paper, we consider the transformative changes to electronic and photonic technologies that might yet be realized using these unconventional, soft semiconductor thin films.

scholarly journals Synthesis and application of trifluoroethoxy-substituted phthalocyanines and subphthalocyanines

2017 ◽  
Vol 13 ◽  
pp. 2273-2296 ◽  
Author(s):  
Satoru Mori ◽  
Norio Shibata
Keyword(s):  
Photodynamic Therapy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Electronic Devices ◽  
The Other ◽  
Organic Electronic Devices ◽  
Organic Electronic ◽  
Other Hand ◽  
Functional Dyes ◽  
Strong Ability

Phthalocyanines and subphthalocyanines are attracting attention as functional dyes that are applicable to organic solar cells, photodynamic therapy, organic electronic devices, and other applications. However, phthalocyanines are generally difficult to handle due to their strong ability to aggregate, so this property must be controlled for further applications of phthalocyanines. On the other hand, trifluoroethoxy-substituted phthalocyanines are known to suppress aggregation due to repulsion of the trifluoroethoxy group. Furthermore, the electronic characteristics of phthalocyanines are significantly changed by the strong electronegativity of fluorine. Therefore, it is expected that trifluoroethoxy-substituted phthalocyanines can be applied to new industrial fields. This review summarizes the synthesis and application of trifluoroethoxy-substituted phthalocyanine and subphthalocyanine derivatives.

Silicon Analogues of Polyfluorene as Materials for Organic Electronics

2009 ◽  
Vol 62 (5) ◽  
pp. 393 ◽  
Author(s):  
Wallace W. H. Wong ◽  
Joel F. Hooper ◽  
Andrew B. Holmes
Keyword(s):  
Thermal Stability ◽  
Optical Properties ◽  
Electronic Materials ◽  
Electronic Devices ◽  
Organic Electronic Devices ◽  
Organic Electronic ◽  
Light Emitting ◽  
Organic Electronic Materials ◽  
Resistance To Oxidation ◽  
Improved Performance

Poly(dibenzosilole)s have been increasingly reported as an alternative to polyfluorene in organic electronic materials. Poly(dibenzosilole)s show similar optical properties to polyfluorene, but with improved resistance to oxidation and thermal stability. Several poly(dibenzosilole)s and their co-polymers have been incorporated into organic electronic devices, such as light emitting diodes and solar cells. These materials have shown improved performance over their polyfluorene-based counterparts.

scholarly journals Purity of organic semiconductors as a key factor for the performance of organic electronic devices

2020 ◽  
Vol 4 (12) ◽  
pp. 3678-3689
Author(s):  
Cigdem Yumusak ◽  
Niyazi Serdar Sariciftci ◽  
Mihai Irimia-Vladu
Keyword(s):  
Organic Semiconductors ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Electronic Devices ◽  
Organic Field Effect Transistors ◽  
Organic Electronic Devices ◽  
Organic Electronic ◽  
Key Factor ◽  
Key Parameter

Effects of purification were studied in organic field effect transistors. The results presented here indicate that the purity of organic semiconductors is a key parameter to achieve high performance for the field of organic field effect transistors.

Copper (II) Phthalocyanine Based Field Effect Transistors as Total Dose Sensors for Determining Ionizing Radiation Dose

2012 ◽  
Vol 1383 ◽  
Author(s):  
Harshil N. Raval ◽  
V. Ramgopal Rao
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Radiation Dose ◽  
Ionizing Radiation ◽  
Total Dose ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Electronic Devices ◽  
Organic Electronic Devices ◽  
Organic Electronic

ABSTRACTChanges in the material properties of copper (II) phthalocyanine (CuPc) thin-films were studied upon exposure to increasing dose of ionizing radiation using photoluminescence spectrum. We observe generation of new energy states below the band gap upon exposure to ionizing radiation. Organic electronic devices – CuPc based resistor and an organic field effect transistor (OFET) – are proposed in this work as total dose sensors for ionizing radiation. We observe an increase in the conductivity of CuPc thin-films with increasing dose of ionizing radiation. To overcome the possibility of changes/degradation in the electrical properties of CuPc thin-films upon interaction with various gases and moisture in the environment, a passivation layer of silicon nitride, deposited by hot-wire CVD process is proposed. Effect of ionizing radiation on the electrical properties of thin-films of CuPc has been studied. We observe a 170% increase in the resistance of the thin-film for a total of 50 Gy radiation dose using Cobalt-60 (60Co) radiation source. Moreover, significant changes in the electrical characteristics of an OFET, with CuPc as an organic semiconductor, have been observed with increasing doses of ionizing radiation. Experiments with an OFET (W/L = 19350 μm / 100 μm and tox = 150 nm) as a sensor resulted in a ∼100X change in the OFF current for a total of 50 Gy dose of ionizing radiation exhibiting a sensitivity of ∼1 nA/Gy. Moreover, implementing a reader circuit, shift in the threshold voltage of the OFET at 1e-7 A drain current displayed a sensitivity of 80 mV/Gy for a total of 50 Gy dose of ionizing radiation. CuPc based organic electronic devices have advantages as sensors because of their low-cost fabrication, large area coverage on flexible substrates, etc.

scholarly journals Oligofuran–Benzothiadiazole Co-oligomers: Synthesis, Optoelectronic Properties and Reactivity

2021 ◽  
Vol 03 (02) ◽  
pp. 303-308
Author(s):  
Dror Ben Abba Amiel ◽  
Choongik Kim ◽  
Ori Gidron
Keyword(s):  
Organic Solar Cells ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Light Emitting Diodes ◽  
Organic Field Effect Transistors ◽  
Active Materials ◽  
Light Emitting ◽  
Organic Light ◽  
Donor Acceptor ◽  
Optical Bandgaps

Donor–acceptor–donor (DAD) triad systems are commonly applied as active materials in ambipolar organic field-effect transistors, organic solar cells, and NIR-emitting organic light-emitting diodes. Often, these triads utilize oligothiophenes as donors, whereas their oxygen-containing analogs, oligofurans, are far less studied in this setup. Here we introduce a family of DAD triads in which the donors are oligofurans and the acceptor is benzothiadiazole. In a combined computational and experimental study, we show that these triads display optical bandgaps similar to those of their thiophene analogs, and that a bifuran donor is sufficient to produce emission in the NIR spectral region. The presence of a central acceptor unit increases the photostability of oligofuran-based DAD systems compared with parent oligofurans of the similar length.

Organic vapor phase deposition for the growth of large area organic electronic devices

2009 ◽  
Vol 95 (23) ◽  
pp. 233305 ◽  
Author(s):  
Richard R. Lunt ◽  
Brian E. Lassiter ◽  
Jay B. Benziger ◽  
Stephen R. Forrest
Keyword(s):  
Vapor Phase ◽  
Electronic Devices ◽  
Large Area ◽  
Organic Electronic Devices ◽  
Organic Electronic ◽  
Organic Vapor ◽  
Vapor Phase Deposition ◽  
Organic Vapor Phase Deposition
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