How disorder controls the kinetics of triplet charge recombination in semiconducting organic polymer photovoltaics

2014 ◽  
Vol 16 (38) ◽  
pp. 20321-20328 ◽  
Author(s):  
Eric R. Bittner ◽  
Vladimir Lankevich ◽  
Simon Gélinas ◽  
Akshay Rao ◽  
David A. Ginger ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Energy Levels ◽  
Theoretical Models ◽  
Charge Recombination ◽  
Inhomogeneous Broadening ◽  
Organic Polymer ◽  
Polymer Photovoltaics ◽  
Energetic Disorder ◽  
Kinetics Of ◽  
Triplet Excitons

Theoretical models of polymer–fullerene interfaces indicate that inhomogeneous broadening of fullerene energy levels introduces strong coupling between the interfacial3CT and nearby fullerene triplet excitons that can enhance the decay of these states in systems with higher degrees of energetic disorder.

How charges separate: correlating disorder, free energy, and open-circuit voltage in organic photovoltaics

2019 ◽  
Vol 216 ◽  
pp. 236-251 ◽  
Author(s):  
Débora P. Mroczek ◽  
Vladimir Lankevich ◽  
Eric R. Bittner
Keyword(s):  
Free Energy ◽  
Density Of States ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Organic Polymer ◽  
Type Ii ◽  
Model Type ◽  
Polymer Photovoltaics ◽  
Energetic Disorder

In this paper, we discuss our recent efforts to correlate the role of density of states, entropy, and configurational and energetic disorder to the open-circuit voltage, VOC, of model type-II organic polymer photovoltaics.

Inhomogeneous Broadening of Photoluminescence Spectra and Kinetics of Nanometer-Thick (Phenethylammonium)2PbI4 Perovskite Thin Films: Implications for Optoelectronics

2021 ◽  
Author(s):  
Vladimir S. Chirvony ◽  
Isaac Suárez ◽  
Jesús Rodríguez-Romero ◽  
Rubén Vázquez-Cárdenas ◽  
Jesus Sanchez-Diaz ◽  
...  
Keyword(s):  
Thin Films ◽  
Inhomogeneous Broadening ◽  
Photoluminescence Spectra ◽  
Kinetics Of

Efficient Computational Screening of Organic Polymer Photovoltaics

2013 ◽  
Vol 4 (10) ◽  
pp. 1613-1623 ◽  
Author(s):  
Ilana Y. Kanal ◽  
Steven G. Owens ◽  
Jonathon S. Bechtel ◽  
Geoffrey R. Hutchison
Keyword(s):  
Organic Polymer ◽  
Computational Screening ◽  
Polymer Photovoltaics

scholarly journals Inversion of Qubit Energy Levels in Qubit-Oscillator Circuits in the Deep-Strong-Coupling Regime

2018 ◽  
Vol 120 (18) ◽  
Author(s):  
F. Yoshihara ◽  
T. Fuse ◽  
Z. Ao ◽  
S. Ashhab ◽  
K. Kakuyanagi ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Energy Levels ◽  
Strong Coupling Regime ◽  
Oscillator Circuits

Thermodynamics kinetics of boron carbide under gamma irradiation dose

2019 ◽  
Vol 33 (09) ◽  
pp. 1950073 ◽  
Author(s):  
Matlab Mirzayev ◽  
Ertugrul Demir ◽  
Khagani Mammadov ◽  
Ravan Mehdiyeva ◽  
Sakin Jabarov ◽  
...  
Keyword(s):  
Activation Energy ◽  
Boron Carbide ◽  
Gamma Irradiation ◽  
Irradiation Time ◽  
Energy Levels ◽  
Initial State ◽  
Scanning Calorimetry ◽  
Gas Atmosphere ◽  
Quantitative Changes ◽  
Kinetics Of

In this paper, high purity boron carbide samples were irradiated by [Formula: see text]Co gamma radioisotope source (0.27 Gy/s dose rate) with 50, 100, 150 and 200 irradiation hours at room-temperature. The unirradiated and irradiated boron carbide samples were heated from 30[Formula: see text]C to 1000[Formula: see text]C at a heating rate of 5[Formula: see text]C/min under the argon gas atmosphere of flow rate 20 ml/min. Thermogravimetric (TG) and Differential Scanning Calorimetry (DSC) were carried out in order to understand the thermodynamic kinetics of boron carbide samples. The weight kinetics, activation energy and specific heat capacity of the unirradiated and irradiated boron carbide samples were examined in two parts, T [Formula: see text] 650[Formula: see text]C and T [Formula: see text] 650[Formula: see text]C, according to the temperature. The dynamic of quantitative changes in both ranges is different depending on the irradiation time. While the phase transition of unirradiated boron carbide samples occurs at 902[Formula: see text]C, this value shifts upto 940[Formula: see text]C in irradiated samples depending on the irradiation time. The activation energy of the unirradiated boron carbide samples decreased from 214 to 46 J/mol in the result of 200[Formula: see text]h gamma irradiation. The reduction of the activation energy after the irradiation compared to the initial state shows that the dielectric properties of the irradiated boron carbide samples have been improved. After the gamma irradiation, two energy barrier states depending on the absorption dose of samples were formed in the irradiated samples. The first and second energy barriers occurred in 0.56–0.80 and 0.23–0.36 eV energy intervals, respectively. The existence of two energy levels in the irradiated boron carbide indicates that the point defects are at deep levels, close to the valence band.

Kinetics of potassium uptake in red spruce seedlings

1985 ◽  
Vol 63 (3) ◽  
pp. 512-516
Author(s):  
J. R. Cumming ◽  
R. T. Eckert ◽  
L. S. Evans
Keyword(s):  
Nonlinear Least Squares ◽  
Theoretical Models ◽  
Potassium Uptake ◽  
Red Spruce ◽  
Saturation Kinetics ◽  
Potassium Absorption ◽  
Parameter Values ◽  
Kinetics Of ◽  
Diffusive Component ◽  
Nutrient Solutions

Potassium uptake by roots of 3-week-old red spruce (Picea rubens Sarg.) seedlings was measured in nutrient solutions ranging in K+ concentration from 0.01 to 10.0 mM. Nonlinear least squares analysis was used to estimate uptake parameters Vmax and Km. Analyses of residuals generated by several theoretical models of ion uptake were undertaken to choose the best mechanistic uptake model. Potassium absorption by red spruce seedlings was characterized by Michaelis–Menten behavior from K+ solutions in the range 0.01 to 1.0 mM. Above 1.0 mM, accumulation of potassium was most readily accounted for by a linear diffusive component superimposed on saturation kinetics. Uptake parameter values of Vmax = 1.17 μmol K∙g fresh weight−1∙h−1 and Km = 0.083 mM were similar to those reported for other species. The culture of seedlings in full-strength nutrient solution did not reduce the ability to resolve these uptake parameters in short-term experiments.

Charge recombination kinetics of photosynthetic reaction centers

1995 ◽  
Vol 38 (1) ◽  
pp. 25-33 ◽  
Author(s):  
A. Agostiano ◽  
L. Catucci ◽  
M. Della Monica ◽  
A. Mallardi ◽  
G. Palazzo ◽  
...  
Keyword(s):  
Charge Recombination ◽  
Reaction Centers ◽  
Photosynthetic Reaction Centers ◽  
Kinetics Of ◽  
Recombination Kinetics

Mechanism of biphasic charge recombination and accumulation in TiO2mesoporous structured perovskite solar cells

2016 ◽  
Vol 18 (17) ◽  
pp. 12128-12134 ◽  
Author(s):  
Hao-Yi Wang ◽  
Yi Wang ◽  
Man Yu ◽  
Jun Han ◽  
Zhi-Xin Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Charge Recombination ◽  
Recombination Process

The charge recombination process is dominated by perovskite or mesoporous TiO2owing to different charge populations at various energy levels.

The disperse kinetics of intercolumnar charge recombination in pulse-irradiated mesomorphic phthalocyanines

1996 ◽  
Vol 212 (1) ◽  
pp. 183-192 ◽  
Author(s):  
John M. Warman ◽  
Pieter G. Schouten ◽  
Gerwin H. Gelinck ◽  
Matthijs P. de Haas
Keyword(s):  
Charge Recombination ◽  
Kinetics Of
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