Journal ArticleDOI
Impedance spectroscopy analysis of poly(3-hexylthiophene):TIPS-pentacene blends in different ratios
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TLDR
In this article, the authors studied thin-films of 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS- pentacene) blending with poly(3-hexylthiophene-2,5-diyl) (P3HT:TP blend) in different ratios, aiming to improve the 6, 13-bis-pentacenes morphology.Abstract:
The 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene) is a promisor p-type solution-processable molecular semiconductor whose electrical properties are highly dependent on its morphology. Unfortunately, there is a great difficulty in controlling the TIPS-pentacene crystallization because it is extremely affected by many factors, as the deposition method, the solvent type, and others. Here, we studied thin-films of TIPS-pentacene blending with poly(3-hexylthiophene-2,5-diyl) (P3HT:TP blend) in different ratios, aiming to improve TIPS-pentacene morphology. The surface of each film was very dependent on the deposition method and the blend morphology exhibited a high variation with the ratio. The different crystallinities achieved lead to dramatic changes in the charge carrier transport properties throughout the film. The impedance spectroscopy indicated that the small addition of P3HT in the TIPS-pentacene greatly improves its conductivity, however, the TIPS-pentacene forms crystallite agglomerates that did not percolate, prevailing the P3HT conductivities.read more
Citations
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Journal ArticleDOI
Combining Impedance Spectroscopy and Information Visualization Methods to Optimize the Detection of Carbendazim Using Layer-by-Layer Films
Leonardo N. Furini,José Diego Fernandes,Douglas H. Vieira,Luis F. C. Morato,Neri Alves,Carlos J. L. Constantino +5 more
TL;DR: In this paper , the interaction between dioctadecyldimethylammonium bromide (DODAB) lipid and carbendazim (MBC) pesticide was explored in an e-tongue to discriminate different MBC concentrations in aqueous solutions.
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Dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene photoresistor: Generation of photocarriers and charge trapping
TL;DR: In this paper , a thin film photoresistor of Dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT) was fabricated using physical vapor deposition (PVD) technique with the most appropriate molecular organization to obtain better performance.
References
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Journal ArticleDOI
Functionalized Pentacene: Improved Electronic Properties from Control of Solid-State Order
TL;DR: The preparation of two functionalized pentacene derivatives, and the effect of this functionalization on both the solid-state ordering and the electronic properties of the resulting crystals is reported.
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Charge transport in high-mobility conjugated polymers and molecular semiconductors
TL;DR: This Review discusses current understanding of charge carrier transport in conjugated polymers and small molecule semiconductors and strategies to improve their performance.
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Controlling Conformations of Conjugated Polymers and Small Molecules: The Role of Nonbonding Interactions
Nicholas E. Jackson,Brett M. Savoie,Kevin L. Kohlstedt,Monica Olvera de la Cruz,George C. Schatz,Lin X. Chen,Lin X. Chen,Mark A. Ratner +7 more
TL;DR: In this paper, a set of non-bonding interactions occurring between various heterocyclic and pendant atoms taken from a group of representative π-conjugated molecules were evaluated.
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X-ray scattering study of thin films of poly(2,5-bis(3-alkylthiophen-2-yl)thieno[3,2-b]thiophene).
TL;DR: The results suggest that electrical transport in PBTTT films is strongly affected by the domain size of the crystalline regions and the disordered regions between them.
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Transport in polycrystalline polymer thin-film transistors
TL;DR: In this paper, a transport model for ordered polymer semiconductors that considers the physical and electronic structure, including the effects of hole delocalization in ordered lamella, grain boundary structures, a two-dimensional density of states, and percolation effects related to transport dimensionality is presented.