Enhanced spectral response in polymer bulk heterojunction solar cells by using active materials with complementary spectra
Journal
Solar Energy Materials and Solar Cells
Journal Volume
94
Journal Issue
1
Pages
22-28
Date Issued
2010
Author(s)
Abstract
We have fabricated organic photovoltaic devices with blends of poly[9,9′-dioctyl-fluorene-co-bithiophene] (F8T2) and fullerene as an electron donor and electron acceptor, respectively. A significant improvement of the photovoltaic efficiency was found in device by using active materials with complementary spectra. The different weight ratios of composite film were also performed to correlate between morphology and the device performance. A power conversion efficiency (PCE) up to 2.0% with an open-circuit voltage of 0.85 V and a short-circuit current (JSC) of 5.3 mA/cm2, was achieved by blending the F8T2 with [6,6]-phenyl-C71-butyric acid methyl ester (PC[70]BM). © 2009 Elsevier B.V. All rights reserved.
Subjects
Bulk heterojunction; PCBM; Polyfluorene; Polymer solar cell; Spectra coverage
SDGs
Other Subjects
Bulk heterojunction; PCBM; Polyfluorene; Polymer solar cell; Spectra coverage; Blending; Composite films; Conversion efficiency; Esters; Fatty acids; Fullerenes; Open circuit voltage; Photovoltaic cells; Polymers; Secondary batteries; Solar cells; Switching circuits; Heterojunctions
Type
journal article