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Constants

$ k_B$ ... Boltzmann's constant $ 1.380662 \times 10^{-23}$JK$ ^{-1}$
$ q$ ... Elementary charge $ 1.602\times 10^{-19}$C
$ \hbar$ ... Planck constant $ 1.054\times 10^{-34}$Js
$ m_0$ ... Electron mass $ 9.108\times 10^{-31}$kg

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Ling Li: Charge Transport in Organic Semiconductor Materials and Devices