recently I have read a paper about the photodetector,which contains some results of the FDTD siulation.
I want to repeat the same results under the same condition with the FDTD but I failed.nextly I want to tell the difference about the result between the paper’s and mine.
- firstly the result I obtained of the top view image of the electric field of the one centered top contact and two off-centered top contact is different from the paper’s.
2.In the paper,the results show top centered Al contact reduces the responsivity by 19%,but In my simulation the value is much lower than 19%,which is just about 7%.
3.As the picture show below,the responsivity will be higher than 1A/W when the PD length is just 10um in the paper.In fact,I feel uncertain about the result of the paper from the result about my own simulation ,from which I got the value of the responsivity is just about 0.84A/W while the PD dimension is 8umX25um.
Can you give me some help and suggestion about the simulation of mine.I look forward to getting some comment from you and making the results of my simulation more accurate.
Thanks a lot.