Abstract
GaAs p-n junction photocurrent response is obtained from an optical microprobe with a dynamic range of at least three decades and a light-spot diameter of about 1.3 µm. The results are found to correlate well with the appropriate theoretical response which includes surface recombination and assumed infinite absorption coefficient. Minority-carrier diffusion lengths computed from the data are typically 3.5 and 0.7 µm for holes in n-type material doped 1017and 1.4×1018cm-3and 1 µm for electrons in >1018cm-3doped p-type material. Estimates of carrier lifetimes are made and the deviation of surface recombination velocity between devices is demonstrated.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
