Analytical description of thermally stimulated luminescence and conductivity without the quasiequilibrium approximation

Lewandowski, A.C.; Markey, B.G.; McKeever, S.W.S.

doi:10.1103/physrevb.49.8029

Cited by 27 publications

(36 citation statements)

References 14 publications

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“…Shenker and Chen [10] did not flnd such a restriction. In contradiction to those authors, Lewandowski and collaboration [11,12] reported that assumption (2) is correct for the case of weak retrapping only. Recemtly published results of Opanowicz [13] also confirm the invalidity of conditions (1) and (2) for low values of densities of traps and recombination centres (10 12 cm -3 ).…”

Section: Introductionmentioning

confidence: 64%

“…The QE assumptions (1) and (2) are, however, not valid for any set of parameters of traps and recombination centres. The QE approximation was examined by several investigation [9][10][11][12][13] which have obtained inconsistent results. Kelly et al [9] found that for low density of active traps (< 10 15 cm -3 ) assumptions (1) and (2) are not valid.…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of Thermally Stimulated Luminescence and Conductivity of Insulating Crystal

Opanowicz

1996

Acta Phys. Pol. A

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Different characteristics of thermally stimulated luminescence and conductivity in insulator are numerically calculated without the quasi-equilibrium approximation. The results are compared with corresponding results calculated using the quasi-equiłibrium approximation. This comparison suggests that the quasi-equifibrium approximation is correct in the low temperature range of the thermally stimulated luminescence and conductivity curves for crystals which have the density of recombination centres higher than 10 13 cm 3 and the recombination coefficient larger than 10 -12 cm3 s-1 , or equivalently, for those with the initial free electron lifetime shorter than 10 -1 s. For the high temperature range of the thermally stimulated luminescence and conductivity curves the quasi-equilibrium approximation gives correct results if the recombination centres density is higher than 10 14 cm 3 and the recombination coefficient is larger than 10-12 cm3 s-1 or if the initial free electron lifetime is shorter than 10 -2 s. The results of this paper show also that the so-called "first-order" shape of the thermally stimulated luminescence and conductivity curves is likical not of the weak retrapping only, but it can be obtained ałso for the strong retrapping.

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Section: Introductionmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Characteristics of Thermally Stimulated Luminescence and Conductivity of Insulating Crystal

Opanowicz

1996

Acta Phys. Pol. A

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“…Using formulas (17) and (22) and a new parameter R= n t /N t we can present formula (21) for the TSC intensity in the form …”

Section: Methods For Determination Of the Parameters Of The Qe And Qsmentioning

confidence: 99%

“…They found that the QE approximation is not adequate for the low trap density (<10 15 cm -3 ). Later several more authors carried out the numerical solutions of the kinetic equations and calculated the TSL and TSC characteristics [14][15][16][17][18][19][20][21][22][23][24][25]. Shenker and Chen [14] found that the QE approximation in description of TSL is true both in the weak and strong retrapping cases and that the level of QE deteriorates in the high temperature part of the TSL peak calculated for the strong retrapping case.…”

Section: Introductionmentioning

confidence: 99%

“…The analysis of the TSL and TSC without the QE approximation was developed in next works of Lewandowski and colleagues [16,17]. However, the conclusions of Lewandowski and colleagues [15][16][17] are not in agreement with the results of numerical solutions of kinetic equations published by Shenker and Chen [14], Opanowicz [18,19], and Opanowicz and Przybyszewski [20]. In works [19,20] the TSL and TSC characteristics were calculated without the use of the QE approximation and the results were compared to the corresponding results obtained using the QE approximation.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of thermally stimulated luminescence and conductivity without quasi-equilibrium approximation

Opanowicz¹

2007

J. Phys. D: Appl. Phys.

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Thermally stimulated luminescence (TSL) and conductivity (TSC) are considered using the classical insulator model that assumes one kind of the active trap, one kind of inactive deep trap, and one kind of the recombination center. Kinetic equations describing the model are solved numerically without and with the use of the quasiequilibrium (QE) approximation. The QE state parameter q I ,, the relative recombination probability γ, and a new parameter called quasi-stationary (QS) state parameter q*=q I γ are used for the analysis of the TSL and TSC. The TSL and TSC curves and the temperature dependences of q I , q*, γ, the recombination lifetime, and the occupancies of active traps and recombination centers are numerically calculated for five sets of kinetic parameters and different heating rates. These calculation results show that: (1) the upper limit of the heating rate for presence of the QS state appears at higher heating rate than that for the QE state when the retrapping process is present, and (2) the TSL (TSC) curves in the QS state have the properties similar to those for the TSL (TSC) curves in the QE state. Approximate formulas for calculation of the parameters q I and q* in the initial range of the TSL and TSC curves are derived and used in the heating-rate methods, proposed in this work, for determination of those parameters from the calculated TSL curves.

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Thermoluminescence

McKeever

2003

Digital Encyclopedia of Applied Physics

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Analytical description of thermally stimulated luminescence and conductivity without the quasiequilibrium approximation

Cited by 27 publications

References 14 publications

Characteristics of Thermally Stimulated Luminescence and Conductivity of Insulating Crystal

Characteristics of Thermally Stimulated Luminescence and Conductivity of Insulating Crystal

Analysis of thermally stimulated luminescence and conductivity without quasi-equilibrium approximation

Thermoluminescence

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