Showing papers on "Mass action law published in 1993"
TL;DR: Theories of micellization based on the application of the mass action law to aggregation processes in surfactant solutions are reviewed in this article, and the rigorous thermodynamic justification of the approach, explanation of the critical micelle concentration, interrelations between the main micellisation parameters, and an analysis of the surface tension isotherm of a micellar solution are given.
41 citations
TL;DR: In this article, the transfer of particles among free carrier (FC), bound exciton (BE), and free exciton photoluminescence (FE) states is studied.
Abstract: Free exciton (FE) and bound exciton (BE) photoluminescence (PL) of quantum well (QW) affected by free carrier (FC) is studied by a model which includes the transfer of particles among FC, FE, and BE states. It is shown that FC state is important not only at high temperature but also at low temperature. General formulas for FE and BE PL are developed. The two‐dimensional law of mass action is reproduced for high temperature, and the trapping of FE by defects is obtained for low defect concentration. Temperature behavior of FE and BE PL for high defect concentration is also discussed.
7 citations
TL;DR: In this article, the transfer of particles among free carrier, free exciton, and bound exciton states under an external excitation was studied in the presence of free carriers, and the model of the free carrier trapped by the impurities was obtained for the QW system with low defect concentration.
Abstract: Free exciton and bound exciton photoluminescence (PL) of a quantum well (QW) in the presence of free carriers is studied in a model that includes the transfer of particles among free carrier, free exciton, and bound exciton states under an external excitation It is shown that the free carrier state is important not only at high temperature but also at low temperature General formulas for the free exciton, bound exciton, and free carrier PL are developed The two‐dimensional (2D) law of mass action for the free carrier and free exciton PL is reproduced at high temperature, and the model of the free exciton trapped by the impurities is obtained for the QW system with low defect concentration Free exciton and bound exciton PL for high defect concentration is also discussed and the 2D law of mass action is obtained at high temperature as well Experimental observations such as the thermal behavior of free exciton and bound exciton PL, the recently observed sharp temperature‐induced reduction of the PL line
5 citations
TL;DR: In this paper, the relative steady-state concentrations of diotomic molecules HCl and OH in specific vibrational levels were determined using an analytical solution of the master equation describing the elementary bimolecular reaction, O+HCl→OH+Cl and its reverse reaction Cl+OH→O+Cl over the temperature range 300-800 K. In analogy to the experimental procedure each reaction was considered in isolation from the other.
4 citations
TL;DR: The thermodynamic equilibrium constants of a number of chemical reactions have not yet been evaluated, since the values of the activities of the various interacting and formed species are unknown as mentioned in this paper, and various theoretical approaches, more or less successful, have been discussed.
1 citations