AN ANALYTICAL SOLUTION FOR THE COLLECTION EFFICIENCY OF SOLAR-CELL EMITTERS WITH ARBITRARY DOPING PROFILE

An analytical expression is derived consisting of a rapidly coverging integral series to calculate collection efficiency of solar-cell emitters in steady state. This general expression applies to emitters which feature an arbitrary doping profile and heavily doped regions. It does not rely on a particular description of the relation between minority-carrier transport parameters and doping density. We show that most of the earlier approximations are included in our solution. To demonstrate the advantages and feasibility of this approach, calculation results are compared with approximate and numerical solutions, and with exact solutions if available. © 1990 IEEE