I have used few simulation software like AMPS, SCAPS, PC1D. But have not found satisfaction when i have tried layers more than 6 or even for tandem solar cell they tend not to work. Can anyone suggest me something better and improved which will work well for more layers than 6 and also for tandem solar cell? Thanks
Very interesting simulation - negative result is also a great findings .
@ Matthew, They show convergence error mostly. And sometimes building new cells also shows error although every parameters are ok.
@Bouzazi, Thank you Sir.
There are a number of commercial packages available which can do the trick. Since you're affiliated with a university, you shouldn't have any problems acquiring an inexpensive license.
TCAD Sentaurus by Synopsys; (see my thesis on modeling MJSC: https://www.ruor.uottawa.ca/bitstream/10393/26240/3/Walker_Alexandre_William_2013_Thesis.pdf)
Atlas by Silvaco; (see the paper by Baudrit for example: https://www.silvaco.com/tech_lib_TCAD/simulationstandard/2009/jan_feb_mar/a1/a1.html)
APSYS by Crosslight (see Crosslight's paper on simulating a MJSC: http://crosslight.com/wp-content/uploads/2013/11/crosslight_mj_cell4.pdf)
NextNano (see http://www.nextnano.com/nextnano3/tutorial/1Dtutorial_CascadeSolarCell.htm)
All of the above have reasonable default material parameters and can explicitly model tunnel junctions, whereas COMSOL will be limited in material properties for example.
With respect to convergence issues, I would suggest paying close attention to the mesh and investigating a finer mesh near the junction. I would guess that you can output the largest errors in solving the transport equations (i.e. electron and hole concentrations) and where these largest errors originate (probably close to the junction).
@ Sheikh Ifatur Rahman There are many software to simulate solar cell. Afors het, Castep software may be helpful for you to simulate tandem solar cell.
Thanks
Very interesting simulation - negative result is also a great findings .
What do you mean by numerical modeling? What is the essence of your task? If I understand what it is I can tell if my methods are applicable to solve it
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