Photosynthesis Research

, Volume 87, Issue 1, pp 73–81

Organic Solar Cells: An Overview Focusing on Active Layer Morphology

Review

DOI: 10.1007/s11120-005-6397-9

Cite this article as:
Benanti, T.L. & Venkataraman, D. Photosynth Res (2006) 87: 73. doi:10.1007/s11120-005-6397-9

Abstract

Solar cells constructed of organic materials are becoming increasingly efficient due to the discovery of the bulk heterojunction concept. This review provides an overview of organic solar cells. Topics covered include: a brief history of organic solar cell development; device construction, definitions, and characteristics; and heterojunction morphology and its relation to device efficiency in conjugated polymer/fullerene systems. The aim of this article is to show that researchers are developing a better understanding of how material structure relates to function and that they are applying this knowledge to build more efficient light-harvesting devices.

Keywords

bulk heterojunction conducting polymers donor/acceptor blend morphology photovoltaic devices plastic solar cells thin films 

Abbreviations

AFM

atomic force microscopy

C60

fullerene

FF

fill factor

HOMO

highest occupied molecular orbital

Isc

short circuit voltage

IPCE

incident photon to current efficiency

ITO

indium tin oxide

KFM

Kelvin force microscopy

LUMO

lowest unoccupied molecular orbital

MDMO-PPV

poly[2-methoxy-5-(3′7′-dimethyloctyloxy)-1,4-phenylene vinylene]

MEH-PPV

poly[(2-methoxy-5-((2-ethylhexyl)oxy)-1,4-phenylene)vinylene]

MPP

maximum power point

OSC

organic solar cell

P3HT

poly(3-hexylthiophene)

P3OT

poly(3-octylthiophene)

Pc

phthalocyanine

PCBM

(6,6)-phenyl-C61-butyric-acid methyl ester

PCE

power conversion efficiency

PEDOT–PSS

poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate)

QE

quantum efficiency

SEM

scanning electron microscopy

TEM

transmission electron microscopy

Voc

open circuit voltage

Copyright information

© Springer 2006

Authors and Affiliations

  1. 1.Department of ChemistryUniversity of Massachusetts – AmherstAmherstUSA