The Experts below are selected from a list of 276 Experts worldwide ranked by ideXlab platform
Xiong Gong - One of the best experts on this subject based on the ideXlab platform.
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Effects of Magnetic Nanoparticles and External Magnetostatic Field on the Bulk Heterojunction Polymer Solar Cells
Scientific reports, 2015Co-Authors: Kai Wang, Chang Liu, Steven S. C. Chuang, Xiong GongAbstract:The price of energy to separate tightly bound electron-hole pair (or charge-transfer state) and extract freely movable charges from low-mobility materials represents fundamental losses for many low-cost photovoltaic devices. In bulk heterojunction (BHJ) polymer solar cells (PSCs), approximately 50% of the total efficiency lost among all energy loss pathways is due to the photogenerated charge carrier recombination within PSCs and low charge carrier mobility of disordered organic materials. To address these issues, we introduce magnetic nanoparticles (MNPs) and orientate these MNPS within BHJ composite by an external Magnetostatic Field. Over 50% enhanced efficiency was observed from BHJ PSCs incorporated with MNPs and an external Magnetostatic Field alignment when compared to the control BHJ PSCs. The optimization of BHJ thin film morphology, suppression of charge carrier recombination, and enhancement in charge carrier collection result in a greatly increased short-circuit current density and fill factor, as a result, enhanced power conversion efficiency.
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enhanced performance of polymer solar cells using pedot pss doped with fe3o4 magnetic nanoparticles aligned by an external Magnetostatic Field as an anode buffer layer
ACS Applied Materials & Interfaces, 2014Co-Authors: Kai Wang, Chang Liu, Steven S. C. Chuang, Alamgir Karim, Yan Sun, Jianhui Hou, Jie Zheng, Xiong GongAbstract:Low efficiency and poor stability are two major obstacles limiting the manufacturing of renewable and cost-effective polymer solar cell (PSCs). To address these problems, solution-processed poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) doped with Fe3O4 magnetic nanoparticles ((PEDOT:PSS):Fe3O4), and above (PEDOT:PSS):Fe3O4 thin film aligned by an external Magnetostatic Field ([(PEDOT:PSS):Fe3O4] W/H) were used as the anode buffer layer for PSCs, respectively. As compared with PSCs with PEDOT:PSS as an anode buffer layer, 38.5% enhanced efficiency and twice improved stability are observed from PSCs incorporated with [(PEDOT:PSS):Fe3O4] W/H anode buffer layer. It was found that enhanced efficiency and improved stability resulted from a combination of reduced acidity of PEDOT:PSS and enhanced electrical conductivity that originated from generated counterions and the paramagnetism of Fe3O4 magnetic nanoparticles by an external Magnetostatic Field.
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solution processed fe3o4 magnetic nanoparticle thin film aligned by an external Magnetostatic Field as a hole extraction layer for polymer solar cells
ACS Applied Materials & Interfaces, 2013Co-Authors: Kai Wang, Chang Liu, He Ren, Hangxing Wang, Lin Huang, Haoli Zhang, Alamgir Karim, Xiong GongAbstract:We report, for the first time, the effect of a solution-processed Fe3O4 magnetic nanoparticle (MNP) thin film and a Fe3O4 MNP thin film aligned by an external Magnetostatic Field, used as a hole extraction layer (HEL), respectively, in polymer solar cells (PSCs). The thin film of a Fe3O4 MNP shows a smoother surface, better transparency, and higher electrical conductivity than that of a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin layer. Moreover, the thin film of a Fe3O4 MNP aligned by an external Magnetostatic Field possesses an enhanced electrical conductivity and lower internal series resistance, thus leading to greater than 13% enhancement in the power conversion efficiency of PSCs than those using a PEDOT:PSS thin film. It was also found that PSCs incorporated with a Fe3O4 MNP shows better stability compared with those using PEDOT:PSS as an anode buffer layer. These results demonstrated that utilization of a Fe3O4 MNP as a HEL in PSCs blazes a trail to achieve highly effi...
Kai Wang - One of the best experts on this subject based on the ideXlab platform.
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Effects of Magnetic Nanoparticles and External Magnetostatic Field on the Bulk Heterojunction Polymer Solar Cells
Scientific reports, 2015Co-Authors: Kai Wang, Chang Liu, Steven S. C. Chuang, Xiong GongAbstract:The price of energy to separate tightly bound electron-hole pair (or charge-transfer state) and extract freely movable charges from low-mobility materials represents fundamental losses for many low-cost photovoltaic devices. In bulk heterojunction (BHJ) polymer solar cells (PSCs), approximately 50% of the total efficiency lost among all energy loss pathways is due to the photogenerated charge carrier recombination within PSCs and low charge carrier mobility of disordered organic materials. To address these issues, we introduce magnetic nanoparticles (MNPs) and orientate these MNPS within BHJ composite by an external Magnetostatic Field. Over 50% enhanced efficiency was observed from BHJ PSCs incorporated with MNPs and an external Magnetostatic Field alignment when compared to the control BHJ PSCs. The optimization of BHJ thin film morphology, suppression of charge carrier recombination, and enhancement in charge carrier collection result in a greatly increased short-circuit current density and fill factor, as a result, enhanced power conversion efficiency.
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enhanced performance of polymer solar cells using pedot pss doped with fe3o4 magnetic nanoparticles aligned by an external Magnetostatic Field as an anode buffer layer
ACS Applied Materials & Interfaces, 2014Co-Authors: Kai Wang, Chang Liu, Steven S. C. Chuang, Alamgir Karim, Yan Sun, Jianhui Hou, Jie Zheng, Xiong GongAbstract:Low efficiency and poor stability are two major obstacles limiting the manufacturing of renewable and cost-effective polymer solar cell (PSCs). To address these problems, solution-processed poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) doped with Fe3O4 magnetic nanoparticles ((PEDOT:PSS):Fe3O4), and above (PEDOT:PSS):Fe3O4 thin film aligned by an external Magnetostatic Field ([(PEDOT:PSS):Fe3O4] W/H) were used as the anode buffer layer for PSCs, respectively. As compared with PSCs with PEDOT:PSS as an anode buffer layer, 38.5% enhanced efficiency and twice improved stability are observed from PSCs incorporated with [(PEDOT:PSS):Fe3O4] W/H anode buffer layer. It was found that enhanced efficiency and improved stability resulted from a combination of reduced acidity of PEDOT:PSS and enhanced electrical conductivity that originated from generated counterions and the paramagnetism of Fe3O4 magnetic nanoparticles by an external Magnetostatic Field.
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solution processed fe3o4 magnetic nanoparticle thin film aligned by an external Magnetostatic Field as a hole extraction layer for polymer solar cells
ACS Applied Materials & Interfaces, 2013Co-Authors: Kai Wang, Chang Liu, He Ren, Hangxing Wang, Lin Huang, Haoli Zhang, Alamgir Karim, Xiong GongAbstract:We report, for the first time, the effect of a solution-processed Fe3O4 magnetic nanoparticle (MNP) thin film and a Fe3O4 MNP thin film aligned by an external Magnetostatic Field, used as a hole extraction layer (HEL), respectively, in polymer solar cells (PSCs). The thin film of a Fe3O4 MNP shows a smoother surface, better transparency, and higher electrical conductivity than that of a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin layer. Moreover, the thin film of a Fe3O4 MNP aligned by an external Magnetostatic Field possesses an enhanced electrical conductivity and lower internal series resistance, thus leading to greater than 13% enhancement in the power conversion efficiency of PSCs than those using a PEDOT:PSS thin film. It was also found that PSCs incorporated with a Fe3O4 MNP shows better stability compared with those using PEDOT:PSS as an anode buffer layer. These results demonstrated that utilization of a Fe3O4 MNP as a HEL in PSCs blazes a trail to achieve highly effi...
S. K. Moayedi - One of the best experts on this subject based on the ideXlab platform.
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Application of Biot–Savart law and generalized uncertainty principle
International Journal of Geometric Methods in Modern Physics, 2019Co-Authors: B. Khosropour, S. K. MoayediAbstract:In the recent decade, many investigations have been done in the framework of generalized uncertainty principle (GUP), but the phenomenology of models in this framework are less studied. In this work, the applications of Biot–Savart law in the presence of a minimal length scale are investigated. We obtain the modified Magnetostatic Field from an infinitely long, straight wire carrying current [Formula: see text]. Also, the modified Magnetostatic Field from a circular loop carrying current [Formula: see text] and the modified Magnetostatic Field of an ideal solenoid are found. It is interesting to note that in the limit [Formula: see text], all of the modified Magnetostatic Fields become their usual forms.
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Application of Biot–Savart law and generalized uncertainty principle
International Journal of Geometric Methods in Modern Physics, 2019Co-Authors: B. Khosropour, S. K. MoayediAbstract:In the recent decade, many investigations have been done in the framework of generalized uncertainty principle (GUP), but the phenomenology of models in this framework are less studied. In this work, the applications of Biot–Savart law in the presence of a minimal length scale are investigated. We obtain the modified Magnetostatic Field from an infinitely long, straight wire carrying current I. Also, the modified Magnetostatic Field from a circular loop carrying current I and the modified Magnetostatic Field of an ideal solenoid are found. It is interesting to note that in the limit a = ℏ2β → 0, all of the modified Magnetostatic Fields become their usual forms.
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lagrangian formulation of a Magnetostatic Field in the presence of a minimal length scale based on the kempf algebra
International Journal of Modern Physics A, 2013Co-Authors: S. K. Moayedi, M R Setare, B. KhosropourAbstract:In the 1990s, Kempf and his collaborators Mangano and Mann introduced a D-dimensional (β, β′)-two-parameter deformed Heisenberg algebra which leads to an isotropic minimal length . In this work, the Lagrangian formulation of a Magnetostatic Field in three spatial dimensions (D = 3) described by Kempf algebra is presented in the special case of β′ = 2β up to the first-order over β. We show that at the classical level there is a similarity between Magnetostatics in the presence of a minimal length scale (modified Magnetostatics) and the Magnetostatic sector of the Abelian Lee–Wick model in three spatial dimensions. The integral form of Ampere's law and the energy density of a Magnetostatic Field in the modified Magnetostatics are obtained. Also, the Biot–Savart law in the modified Magnetostatics is found. By studying the effect of minimal length corrections to the gyromagnetic moment of the muon, we conclude that the upper bound on the isotropic minimal length scale in three spatial dimensions is 4.42×10-19 m. The relationship between Magnetostatics with a minimal length and the Gaete–Spallucci nonlocal Magnetostatics [J. Phys. A: Math. Theor. 45, 065401 (2012)] is investigated.
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lagrangian formulation of a Magnetostatic Field in the presence of a minimal length scale based on the kempf algebra
arXiv: High Energy Physics - Theory, 2013Co-Authors: S. K. Moayedi, M R Setare, B. KhosropourAbstract:In the 1990s, Kempf and his collaborators Mangano and Mann introduced a $D$-dimensional $(\beta,\beta')$-two-parameter deformed Heisenberg algebra which leads to an isotropic minimal length $(\triangle X^{i})_{min}=\hbar\sqrt{D\beta+\beta'}\;,\forall i\in \{1,2, \cdots,D\}$. In this work, the Lagrangian formulation of a Magnetostatic Field in three spatial dimensions $(D=3)$ described by Kempf algebra is presented in the special case of $\beta'=2\beta$ up to the first order over $\beta$. We show that at the classical level there is a similarity between Magnetostatics in the presence of a minimal length scale (modified Magnetostatics) and the Magnetostatic sector of the Abelian Lee-Wick model in three spatial dimensions. The integral form of Ampere's law and the energy density of a Magnetostatic Field in the modified Magnetostatics are obtained. Also, the Biot-Savart law in the modified Magnetostatics is found. By studying the effect of minimal length corrections to the gyromagnetic moment of the muon, we conclude that the upper bound on the isotropic minimal length scale in three spatial dimensions is $4.42\times10^{-19}m$. The relationship between Magnetostatics with a minimal length and the Gaete-Spallucci non-local Magnetostatics (J. Phys. A: Math. Theor. \textbf{45}, 065401 (2012)) is investigated.
Chang Liu - One of the best experts on this subject based on the ideXlab platform.
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Effects of Magnetic Nanoparticles and External Magnetostatic Field on the Bulk Heterojunction Polymer Solar Cells
Scientific reports, 2015Co-Authors: Kai Wang, Chang Liu, Steven S. C. Chuang, Xiong GongAbstract:The price of energy to separate tightly bound electron-hole pair (or charge-transfer state) and extract freely movable charges from low-mobility materials represents fundamental losses for many low-cost photovoltaic devices. In bulk heterojunction (BHJ) polymer solar cells (PSCs), approximately 50% of the total efficiency lost among all energy loss pathways is due to the photogenerated charge carrier recombination within PSCs and low charge carrier mobility of disordered organic materials. To address these issues, we introduce magnetic nanoparticles (MNPs) and orientate these MNPS within BHJ composite by an external Magnetostatic Field. Over 50% enhanced efficiency was observed from BHJ PSCs incorporated with MNPs and an external Magnetostatic Field alignment when compared to the control BHJ PSCs. The optimization of BHJ thin film morphology, suppression of charge carrier recombination, and enhancement in charge carrier collection result in a greatly increased short-circuit current density and fill factor, as a result, enhanced power conversion efficiency.
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enhanced performance of polymer solar cells using pedot pss doped with fe3o4 magnetic nanoparticles aligned by an external Magnetostatic Field as an anode buffer layer
ACS Applied Materials & Interfaces, 2014Co-Authors: Kai Wang, Chang Liu, Steven S. C. Chuang, Alamgir Karim, Yan Sun, Jianhui Hou, Jie Zheng, Xiong GongAbstract:Low efficiency and poor stability are two major obstacles limiting the manufacturing of renewable and cost-effective polymer solar cell (PSCs). To address these problems, solution-processed poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) doped with Fe3O4 magnetic nanoparticles ((PEDOT:PSS):Fe3O4), and above (PEDOT:PSS):Fe3O4 thin film aligned by an external Magnetostatic Field ([(PEDOT:PSS):Fe3O4] W/H) were used as the anode buffer layer for PSCs, respectively. As compared with PSCs with PEDOT:PSS as an anode buffer layer, 38.5% enhanced efficiency and twice improved stability are observed from PSCs incorporated with [(PEDOT:PSS):Fe3O4] W/H anode buffer layer. It was found that enhanced efficiency and improved stability resulted from a combination of reduced acidity of PEDOT:PSS and enhanced electrical conductivity that originated from generated counterions and the paramagnetism of Fe3O4 magnetic nanoparticles by an external Magnetostatic Field.
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solution processed fe3o4 magnetic nanoparticle thin film aligned by an external Magnetostatic Field as a hole extraction layer for polymer solar cells
ACS Applied Materials & Interfaces, 2013Co-Authors: Kai Wang, Chang Liu, He Ren, Hangxing Wang, Lin Huang, Haoli Zhang, Alamgir Karim, Xiong GongAbstract:We report, for the first time, the effect of a solution-processed Fe3O4 magnetic nanoparticle (MNP) thin film and a Fe3O4 MNP thin film aligned by an external Magnetostatic Field, used as a hole extraction layer (HEL), respectively, in polymer solar cells (PSCs). The thin film of a Fe3O4 MNP shows a smoother surface, better transparency, and higher electrical conductivity than that of a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin layer. Moreover, the thin film of a Fe3O4 MNP aligned by an external Magnetostatic Field possesses an enhanced electrical conductivity and lower internal series resistance, thus leading to greater than 13% enhancement in the power conversion efficiency of PSCs than those using a PEDOT:PSS thin film. It was also found that PSCs incorporated with a Fe3O4 MNP shows better stability compared with those using PEDOT:PSS as an anode buffer layer. These results demonstrated that utilization of a Fe3O4 MNP as a HEL in PSCs blazes a trail to achieve highly effi...
B. Khosropour - One of the best experts on this subject based on the ideXlab platform.
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Application of Biot–Savart law and generalized uncertainty principle
International Journal of Geometric Methods in Modern Physics, 2019Co-Authors: B. Khosropour, S. K. MoayediAbstract:In the recent decade, many investigations have been done in the framework of generalized uncertainty principle (GUP), but the phenomenology of models in this framework are less studied. In this work, the applications of Biot–Savart law in the presence of a minimal length scale are investigated. We obtain the modified Magnetostatic Field from an infinitely long, straight wire carrying current [Formula: see text]. Also, the modified Magnetostatic Field from a circular loop carrying current [Formula: see text] and the modified Magnetostatic Field of an ideal solenoid are found. It is interesting to note that in the limit [Formula: see text], all of the modified Magnetostatic Fields become their usual forms.
-
Application of Biot–Savart law and generalized uncertainty principle
International Journal of Geometric Methods in Modern Physics, 2019Co-Authors: B. Khosropour, S. K. MoayediAbstract:In the recent decade, many investigations have been done in the framework of generalized uncertainty principle (GUP), but the phenomenology of models in this framework are less studied. In this work, the applications of Biot–Savart law in the presence of a minimal length scale are investigated. We obtain the modified Magnetostatic Field from an infinitely long, straight wire carrying current I. Also, the modified Magnetostatic Field from a circular loop carrying current I and the modified Magnetostatic Field of an ideal solenoid are found. It is interesting to note that in the limit a = ℏ2β → 0, all of the modified Magnetostatic Fields become their usual forms.
-
lagrangian formulation of a Magnetostatic Field in the presence of a minimal length scale based on the kempf algebra
International Journal of Modern Physics A, 2013Co-Authors: S. K. Moayedi, M R Setare, B. KhosropourAbstract:In the 1990s, Kempf and his collaborators Mangano and Mann introduced a D-dimensional (β, β′)-two-parameter deformed Heisenberg algebra which leads to an isotropic minimal length . In this work, the Lagrangian formulation of a Magnetostatic Field in three spatial dimensions (D = 3) described by Kempf algebra is presented in the special case of β′ = 2β up to the first-order over β. We show that at the classical level there is a similarity between Magnetostatics in the presence of a minimal length scale (modified Magnetostatics) and the Magnetostatic sector of the Abelian Lee–Wick model in three spatial dimensions. The integral form of Ampere's law and the energy density of a Magnetostatic Field in the modified Magnetostatics are obtained. Also, the Biot–Savart law in the modified Magnetostatics is found. By studying the effect of minimal length corrections to the gyromagnetic moment of the muon, we conclude that the upper bound on the isotropic minimal length scale in three spatial dimensions is 4.42×10-19 m. The relationship between Magnetostatics with a minimal length and the Gaete–Spallucci nonlocal Magnetostatics [J. Phys. A: Math. Theor. 45, 065401 (2012)] is investigated.
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lagrangian formulation of a Magnetostatic Field in the presence of a minimal length scale based on the kempf algebra
arXiv: High Energy Physics - Theory, 2013Co-Authors: S. K. Moayedi, M R Setare, B. KhosropourAbstract:In the 1990s, Kempf and his collaborators Mangano and Mann introduced a $D$-dimensional $(\beta,\beta')$-two-parameter deformed Heisenberg algebra which leads to an isotropic minimal length $(\triangle X^{i})_{min}=\hbar\sqrt{D\beta+\beta'}\;,\forall i\in \{1,2, \cdots,D\}$. In this work, the Lagrangian formulation of a Magnetostatic Field in three spatial dimensions $(D=3)$ described by Kempf algebra is presented in the special case of $\beta'=2\beta$ up to the first order over $\beta$. We show that at the classical level there is a similarity between Magnetostatics in the presence of a minimal length scale (modified Magnetostatics) and the Magnetostatic sector of the Abelian Lee-Wick model in three spatial dimensions. The integral form of Ampere's law and the energy density of a Magnetostatic Field in the modified Magnetostatics are obtained. Also, the Biot-Savart law in the modified Magnetostatics is found. By studying the effect of minimal length corrections to the gyromagnetic moment of the muon, we conclude that the upper bound on the isotropic minimal length scale in three spatial dimensions is $4.42\times10^{-19}m$. The relationship between Magnetostatics with a minimal length and the Gaete-Spallucci non-local Magnetostatics (J. Phys. A: Math. Theor. \textbf{45}, 065401 (2012)) is investigated.