Extraction of solar cell series resistance without presumed current–voltage functional form

Abstract A new method which does not require presumed current–voltage functional form is proposed for the determination of the series resistance, the shunt resistance, the photocurrent, and the intrinsic current–voltage characteristics of solar cells. This method was applied to analyze a bulk heterojunction organic solar cell. It was found that the extracted intrinsic current–voltage characteristic clearly exhibits a linear hopping current component and a quadratic space-charge limited current component. Furthermore, the reconstructed dark current–voltage curve is found to differ significantly from the measured dark current–voltage curve, revealing the importance of electric field in the operation of bulk heterojunction organic solar cells.

[1]  Tatsuo Mori,et al.  Equivalent Circuit Analysis of Dye-Sensitized Solar Cell by Using One-Diode Model: Effect of Carboxylic Acid Treatment of TiO2 Electrode , 2006 .

[2]  A. Kapoor,et al.  A new approach to study organic solar cell using Lambert W-function , 2005 .

[3]  Gang Li,et al.  “Solvent Annealing” Effect in Polymer Solar Cells Based on Poly(3‐hexylthiophene) and Methanofullerenes , 2007 .

[4]  R. J. Handy.  Theoretical analysis of the series resistance of a solar cell , 1967 .

[5]  A. Kaminski,et al.  I–V methods to extract junction parameters with special emphasis on low series resistance , 1999 .

[6]  M. Chegaar,et al.  A new method for evaluating illuminated solar cell parameters , 2001 .

[7]  M. Chegaar,et al.  Organic and inorganic solar cells parameters evaluation from single I–V plot , 2008 .

[8]  F. Krebs,et al.  A roll-to-roll process to flexible polymer solar cells: model studies, manufacture and operational stability studies , 2009 .

[9]  J. Shewchun,et al.  A better approach to the evaluation of the series resistance of solar cells , 1979 .

[10]  M. Wolf,et al.  SERIES RESISTANCE EFFECTS ON SOLAR CELL MEASUREMENTS , 1963 .

[11]  P. Mialhe,et al.  A Review of Techniques to Determine the Series Resistance of Solar Cells , 1983, May 16.

[12]  F. Krebs.  Fabrication and processing of polymer solar cells: A review of printing and coating techniques , 2009 .

[13]  A. Ortiz-Conde,et al.  New method to extract the model parameters of solar cells from the explicit analytic solutions of their illuminated I–V characteristics , 2006 .

[14]  E. Radziemska.  Dark I–U–T measurements of single crystalline silicon solar cells , 2005 .

[15]  P. Heremans,et al.  Weak-field carrier hopping in disordered organic semiconductors: the effects of deep traps and partly filled density-of-states distribution , 2002 .

[16]  G. Araújo,et al.  A new method for experimental determination of the series resistance of a solar cell , 1982, IEEE Transactions on Electron Devices.

[17]  M. Niwano,et al.  An extensively valid and stable method for derivation of all parameters of a solar cell from a single current-voltage characteristic , 2008 .

[18]  T. Easwarakhanthan,et al.  Nonlinear Minimization Algorithm for Determining the Solar Cell Parameters with Microcomputers , 1986 .