CCL: open circuit voltage



 Sent to CCL by: "meishway  linkon" [meishwaylinkon_-_yahoo.com]
 hello everybody !
 I am trying to solve a simple equation for open circuit voltage  but in vain :
 Voc = HOMO(donor) - LUMO(acceptor) / e  - 0.3V
 if somebody is familiar this equation ,then please can help to solve it , for
 example if value for homo of donor is  -5.41 eV  and for acceptor lumo is
 -4.09eV .what will be  Voc in volts . I need urgent help for it,please help me.