Modeling and optimization of polymer based bulk heterojunction (BH) solar cell

Author

Ray, Biswajit ; Nair, Pradeep R. ; García, R. Edwin ; Alam, Muhammad A.

Author_Institution

Dept. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA

fYear

2009

Firstpage

1

Lastpage

4

Abstract

A polymer phase separation model based on Cahn-Hilliard equation and a three-dimensional (3D) coupled exciton/electron/hole transport model in the disordered, phase-segregated morphology so generated, allow us to predict - possibly for the first time - the morphology dependent performance limits of polymer/fullerene bulk heterostructure (BH) solar cells. We relate the optimum anneal time to polymer sizes, solvent content, film thickness, and anneal temperature and find that a regularization of the morphology can double the efficiency of BH cells.

Keywords

annealing; electron mobility; excitons; fullerene devices; hole mobility; solar cells; 3D coupled exciton-electron-hole transport model; Cahn-Hilliard equation; anneal temperature; film thickness; morphology dependent performance; optimum anneal time; polymer based bulk heterojunction solar cell; polymer size; polymer-fullerene bulk heterostructure solar cells; solvent content; Annealing; Charge carrier processes; Equations; Excitons; Heterojunctions; Morphology; Photovoltaic cells; Polymer films; Predictive models; Solar power generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices Meeting (IEDM), 2009 IEEE International

Conference_Location

Baltimore, MD

Print_ISBN

978-1-4244-5639-0

Electronic_ISBN

978-1-4244-5640-6

Type

conf

DOI

10.1109/IEDM.2009.5424282

Filename

5424282