Interfacial nanostructuring on the performance of polymer/TiO2 nanorod bulk heterojunction solar cells
Journal
Journal of the American Chemical Society
Journal Volume
131
Journal Issue
10
Pages
3644-3649
Date Issued
2009
Author(s)
Lin, Y.-Y.
Chu, T.-H.
Li, S.-S.
Chuang, C.-H.
Chang, C.-H.
Su, W.-F.
Chang, C.-P.
Abstract
This work presents polymer photovoltaic devices based on poly(3-hexylthiophene) (P3HT) and TiO 2 nanorod hybrid bulk heterojunctions. Interface modification of a TiO 2 nanorod surface is conducted to yield a very promising device performance of 2.20% with a short circuit current density (J sc) of 4.33 mA/ cm 2, an open circuit voltage (∨ oc) of 0.78 V, and a fill factor (FF) of 0.65 under simulated A.M. 1.5 illumination (100 mW/cm 2). The suppression of recombination at P3HT/TiO 2 nanorod interfaces by the attachment of effective ligand molecules substantially improves device performance. The correlation between surface photo voltage and hybrid morphology is revealed by scanning Kelvin probe microscopy. The proposed method provides a new route for fabricating low-cost, environmentally friendly polymer/inorganic hybrid bulk heterojunction photovoltaic devices. © 2009 American Chemical Society.
SDGs
Other Subjects
Bulk heterojunction; Bulk heterojunction photovoltaic devices; Bulk heterojunction solar cells; Device performance; Environmentally-friendly; Fill factor; Hybrid morphology; Interface modification; Ligand molecules; Nano-structuring; Nanorod surfaces; Poly-3-hexylthiophene; Polymer photovoltaic device; Scanning Kelvin probe microscopy; Surface photo voltages; TiO; Nanorods; Open circuit voltage; Photovoltaic cells; Photovoltaic effects; Polymers; Heterojunctions; dye; ligand; nanocrystal; nanomaterial; nanorod; polymer; titanium dioxide; article; atomic force microscopy; bulk density; chemical modification; chemical structure; electric potential; electrical equipment; electricity; hybrid; microscopy; molecular probe; molecule; morphology; nanofabrication; short circuit current; solar cell
Type
journal article