Furthermore, the analysis of the defect luminescence can give a deeper insight in the carrier lifetime limiting defects.
For example, the data calculated by B.L. Shivachev [49] indicate the increase in the lifetime of defects in hydrogen-containing nickel.
The grain size, grain orientations, and the percentage of twin boundaries, as well as minority lifetime and defect density, were affected significantly by the initial cooling.
Finally, the femtosecond pump-probe spectroscopy studies unambiguously revealed the close correlations between the defect-related carrier lifetime, density of defect states, and the conversion efficiency of the devices.
In this paper, the correlation between wafer quality and cell efficiency was studied to identify the key impact factors, such as effective lifetime, impurities and defects.
In addition, arcing and methods to avoid it are reviewed; this includes, arc initiations and their destructive effects (e.g. driving the process to become unstable, reducing the target lifetime and creating defects in the sputtered films), time required for arcs to occur, and finally, methods of avoiding arcs.
The average size and lifetime of the defects might be related to the degree of membrane instability and membrane stress.
The defect lifetime τ int in this model reflects the appeared/disappeared traps in respect to positive/negative sign of (I n, I int ) intensities.
For Ge lasers, we show that the defect-limited lifetime becomes increasing important as tensile strain is introduced, and that defect-limited lifetime must be improved if the full benefits of strain are to be realized.
% of Ga, when glass formation was not essentially violated, the positron trapping is dominated on intrinsic voids associated with bond-free solid angles of bridging As2Se4/2 units, thus producing an increase in defect-related lifetime from 0.360 to 0.382 ns at the cost of reduced second-component intensity and positron trapping rate in defects.
