Thermodynamic Potentials Theory Aspects in External Differential Forms Calculus Representation
Valerii V. Shelest,
Alexander V. Hristov,
Dmitrii A. Chervinskii,
Vladimir V. Rumyantsev
Issue:
Volume 3, Issue 2, March 2017
Pages:
6-13
Received:
29 May 2017
Accepted:
28 June 2017
Published:
27 July 2017
Abstract: Thorough review of external differential forms calculus basic theses presented. Potentialities of this mathematical discipline, which can describe physical properties of dielectric materials, magnets and photonic materials influenced by mechanical, thermal and electromagnetic factors more logically and objectively, then traditional methods, demonstrated. Methodological effectiveness of the differential forms of thermodynamic potentials application in the macroscopic properties of homogeneous mono- and polyvariant systems description has been demonstrated. The simple, fundamental, symmetrical to the thermodynamic variables choice relations demonstrating the calculus of differential forms benefits have been obtained. Using Pfaffian forms thermodynamics, have been demonstrated, that differential forms calculus application to a description of the physical reality allows to operate physical concepts at a deeper level, based on the fundamental physical and mathematical principles.
Abstract: Thorough review of external differential forms calculus basic theses presented. Potentialities of this mathematical discipline, which can describe physical properties of dielectric materials, magnets and photonic materials influenced by mechanical, thermal and electromagnetic factors more logically and objectively, then traditional methods, demonst...
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Effects of Thermal Annealing on Optical Properties of Poly (3-Hexyithiophene): [6,6]-Phenyl C6o-Butyric Acid Methyl Ester Blend Thin Film
Sunday Wilson Balogun,
Sabastine Chinedu Ezike,
Yekini Kolawole Sanusi,
Adebayo Olaniyi Aina
Issue:
Volume 3, Issue 2, March 2017
Pages:
14-19
Received:
11 September 2017
Accepted:
25 September 2017
Published:
15 November 2017
Abstract: Organic solar cells (OSCs) have gained much attention in the field of organic electronics since it has advantage of physical light weight, easy to fabricate, consumed less production cost, and could be produced in large scale for energy harvesting applications. These types of electronics are promising devices that can be used to tackle today’s energy issue. Bulk hetero junction organic thin film was deposited using spin-coating method. The material used for the deposition of the thin film is the combination of poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl C60-butyric acid methyl ester (PC60BM) that form the interconnection of donor/acceptor component. Deposition was done by spin coating P3HT: PC60BM onto glass substrate in order to form 100nm P3HT: PC60BM active layer. Thermal annealing at three different temperatures was carried out on the samples deposited. The optical characterization of the thin film was investigated using UV-VIS spectrophotometer. The thin film based on P3HT: PC60BM blend film was deposited and annealed at 120°C, 130°C, and 140°C temperature, respectively. The result shows that the film annealed at 140°C has the highest absorption peak at 520nm wavelength in the visible region followed by annealing done at 130°C. This shows that thermal treatment may improve the stability/efficiency of P3HT: PC60BM thin film.
Abstract: Organic solar cells (OSCs) have gained much attention in the field of organic electronics since it has advantage of physical light weight, easy to fabricate, consumed less production cost, and could be produced in large scale for energy harvesting applications. These types of electronics are promising devices that can be used to tackle today’s ener...
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