Nanostructured polymer blends (P3HT/PMMA): Inorganic titania hybrid photovoltaic devices
Journal
Solar Energy Materials and Solar Cells
Journal Volume
93
Journal Issue
6-7
Pages
961-965
Date Issued
2009
Author(s)
Wu M.-C.
Liao H.-C.
Lo H.-H.
Chen S.
Lin Y.-Y.
Yen W.-C.
Zeng T.-W.
Chen C.-W.
Chen Y.-F.
Abstract
We have fabricated a photovoltaic (PV) device based on the polymer blends of (poly(3-hexylthiophene) (P3HT)/polymethylmethacrylate (PMMA)) and inorganic TiO2 nanorod bulk heterojunction. The optimized photovoltaic device with 1.6 wt% PMMA concentration has a power conversion efficiency of 0.65% under simulated AM 1.5 illumination (100 mW/cm2), which is 38% more efficient than the device without the incorporation of PMMA. Furthermore, the PMMA-included device gives a short-circuit current density of 2.57 mA/cm2, an open-circuit voltage of 0.53 V, and a fill factor of 0.48. Our studies have shown that having optimal PMMA concentration in the photovoltaic devices helps to smoothen the surface of the hybrid thin film, broaden the absorption spectrum, and improve the electrical conductivity. The results implying improvement in cell performance can be illustrated using atomic force microscopy (AFM), a UV/vis spectrophotometer and electrical measurements. © 2008 Elsevier B.V. All rights reserved.
SDGs
Other Subjects
Atomic-force microscopies; Bulk heterojunctions; Electrical conductivities; Electrical measurements; Fill factors; Hybrid thin films; In cells; Nanostructured polymer blends; Open-circuit voltages; P3HT; Photovoltaic devices; PMMA; Poly-3-hexylthiophene; Polymethylmethacrylate; Power conversion efficiencies; Short-circuit current densities; TiO2; Titania; Absorption spectroscopy; Conversion efficiency; Electric conductivity; Heterojunctions; Nanorods; Photovoltaic effects; Polymers; Switching circuits; Titanium dioxide; Titanium oxides; Polymer blends
Type
journal article