*.overlap

is the file output the electron and hole overlap with the 2D Schrodinger eigen solver. The output file format is

m,n, EigenEn(m),EigenEp(n),EigenEfn(m),EigenEfp(n), $| \langle \phi_{e,m}|\phi_{h,n} \rangle |$

m is the mth electron eigen states
n is the nth hole eigen states
EigenEn(m)  is the $m_{th}$ electron eigen values
EigenEp(n)  is the $n_{th}$ hole eigen values
EigenEfn(m) is the averaged electon fermi level within $m_{th}$ eigen wave function region
EigenEfp(n) is the averaged hole's fermi level within $n_{th}$ eigen wave function region's 
$| \langle \phi_{e,m}|\phi_{h,n} \rangle |$ is the overlap of mth electron and nth hole.