Photoelectric Properties of Silicon Nanocrystals/P3HT Bulk-Heterojunction Ordered in Titanium Dioxide Nanotube Arrays.

Nanoscale Research Letters
V SvrcekM Kondo

Abstract

A silicon nanocrystals (Si-ncs) conjugated-polymer-based bulk-heterojunction represents a promising approach for low-cost hybrid solar cells. In this contribution, the bulk-heterojunction is based on Si-ncs prepared by electrochemical etching and poly(3-hexylthiophene) (P3HT) polymer. Photoelectric properties in parallel and vertical device-like configuration were investigated. Electronic interaction between the polymer and surfactant-free Si-ncs is achieved. Temperature-dependent photoluminescence and transport properties were studied and the ratio between the photo- and dark-conductivity of 1.7 was achieved at ambient conditions. Furthermore the porous titanium dioxide (TiO(2)) nanotubes' template was used for vertical order of photosensitive Si-ncs/P3HT-based blend. The anodization of titanium foil in ethylene glycol-based electrolyte containing fluoride ions and subsequent thermal annealing were used to prepare anatase TiO(2) nanotube arrays. The arrays with nanotube inner diameter of 90 and 50 nm were used for vertical ordering of the Si-ncs/P3HT bulk-heterojunction.

References

Sep 17, 2004·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Reshef Tenne, C N R Rao
May 17, 2005·Nature Materials·Matt LawPeidong Yang
Jul 25, 2007·Nano Letters·Matthew C BeardArthur J Nozik
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Dec 1, 2008·Nanoscale Research Letters·Chenglin YanDongfeng Xue

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Citations

Jul 3, 2013·ACS Applied Materials & Interfaces·Athanasios MilionisAthanassia Athanassiou
Jun 22, 2010·Cytometry. Part a : the Journal of the International Society for Analytical Cytology·R M ZuckerW K Boyes
Nov 3, 2010·Risk Analysis : an Official Publication of the Society for Risk Analysis·Ann Bostrom, Ragnar E Löfstedt

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Methods Mentioned

BETA
light harvesting
irradiate
thermal treatment
scanning electron microscopy

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