Origin of the dark-current ideality factor in polymer:fullerene bulk heterojunction solar cells

The Importance of Fullerene Percolation in the Mixed Regions of PolymerFullerene Bulk Heterojunction Solar Cells

wileyonlinelibrary.com © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim J. A. Bartelt, Z. M. Beiley, W. R. Mateker, Dr. K. R. Graham, Prof. M. D. McGehee Department of Materials Science and Engineering Stanford University Stanford, CA 94305, USA E-mail: [email protected] Dr. E. T. Hoke Department of Applied Physics Stanford University Stanford, CA 94305, USA J. D. Douglas, Prof. J. M. J. F...

Bulk Heterojunction Solar Cells — Opportunities and Challenges

Analytical Model for Voltage-Dependent Photo and Dark Currents in Bulk Heterojunction Organic Solar Cells

Abstract: A physics-based explicit mathematical model for the external voltage-dependent forward dark current in bulk heterojunction (BHJ) organic solar cells is developed by considering Shockley-Read-Hall (SRH) recombination and solving the continuity equations for both electrons and holes. An analytical model for the external voltage-dependent photocurrent in BHJ organic solar cells is also p...

Empirical study of the characteristics of current-state organic bulk heterojunction solar cells

We studied and compared the reported characteristics of 22 different bulk heterojunction organic solar cells fabricated and characterized by different research institutes. We only considered bulk heterojunction solar cells where both the acceptor (the n-type) and the donor (the p-type) are organic. All cells were characterized under illumination with the standard A.M. 1.5 spectrum and an intens...

Hydrogen bonding in bulk heterojunction solar cells: A case study

Small molecules with dithieno[3,2-b;2',3'-d]thiophene as central building block and octyl cyanoacetate and octyl cyanoacetamide as different terminal building blocks have been designed and synthesized. The amide containing small molecule can form intermolecular hydrogen bonding between N-H...O = C of the amide group. The photovoltaic properties and active layer morphologies of the two molecules...