Optoelectronic characterization
Current and Power
^Photocurrent
Then the photocurrent \(I_\text{photo}\) is calculated as the summation of the integration of these “radiative” and “fixed”:
Power
(37)\[\sum_{i}V_\text{i-th contact}\cdot I_\text{i-th contact}\]
Absorbed-power
(38)\[\int dEd\mathbf{x}\ E\cdot G(E,\mathbf{x})\]where \(G(E,x)\) is the generation rate calculated according to the configuration in classical{ }.
Emitted-power
(39)\[\int dEdx\ E\cdot R^{spon}_\text{rad}(E,x)\]
Efficiencies
IQE - internal quantum efficiency
is calculated as
where \(I_\text{total}\) is the total injected current consisted of both electron and hole currents.
The electrical power and optical power are calculated and output in power.dat:
RQE - volume quantum efficiency
, which is also called as radiative quantum efficiency, is calculated as
where \(R_\text{total}=R^{stim}_\text{rad,net} + R_\text{fixed} + R_\text{Auger} + R_\text{SRH}\) is the total recombination rate including both radiative and non-radiative recombination.
Both \(\eta_{IQE}\) and \(\eta_{VQE}\) agree if the electrons and holes injected into the active region are fully consumed up by the recombination there. However, if they are not consumed up, \(e\cdot R_\text{total}<I_\text{charge}\) and this results in \(\eta_\text{IQE1}>\eta_\text{IQE2}\)
Last update: 09/12/2024