The Potential of P3HT:3C-SiC Composite Structures for Hybrid Photovoltaics
In hybrid solar cells, a nanoscale donor/acceptor junction between an organic and an inorganic semiconductor material is mostly established by mixing the organic semiconductor with inorganic nanocrystals or by infiltration into an inorganic nanostructure scaffold. In this report, we
describe the characteristics of submicron-sized cubic silicon carbide and its potential as acceptor material in hybrid photovoltaics. The SiC nanocrystals are derived from a sol–gel based precursor after carbothermal reduction. The process allows reasonable control of nanostructure size
and optoelectronic properties can be altered by SiC doping via sol–gel processing additives. SiC has widely been neglected from this application in the past, because of its indirect band gap and high fabrication costs. Still, its band energies are suitable to match the HOMO/LUMO of common
organic donors, providing a promising outlook for its acceptor functionality in hybrid photovoltaics. This is shown by fast-laser spectroscopy on according P3HT:SiC hybrid layers, which shows indication for potential long-lived P3HT polaron emission.
Keywords: CONJUGATED POLYMERS; HYBRID PHOTOVOLTAICS; NANOCRYSTALS; PHOTOPHYSICS; SILICON CARBIDE
Document Type: Short Communication
Publication date: 01 January 2015
- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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