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Multifunctional Silicon Optoelectronics Integrated with Plasmonic Scattering Color
journal contribution
posted on 2016-11-29, 00:00 authored by Long Wen, Qin Chen, Xin Hu, Huacun Wang, Lin Jin, Qiang SuPlasmonic
scattering from metallic nanoparticles has been used
for centuries to create the colorful appearance of stained glass.
Besides their use as passive spectral filtering components, multifunctional
optoelectronic applications can be achieved by integrating the nanoscatters
with semiconductors that generate electricity using the complementary
spectral components of plasmonic colors. To suppress the usual degradation
of both efficiency and the gamut of plasmonic scattering coloration
in highly asymmetric index configurations like a silicon host, aluminum
nanodisks on indium tin oxide (ITO) coated silicon were experimentally
studied and demonstrated color sorting in the full visible range along
with photocurrent generation. Interestingly, the photocurrents were
found to be comparable to the reference devices with only antireflection
coatings in spite of the power loss for coloration. Detailed investigation
shows that ITO serves as both the impedance matching layer for promoting
the backward scattering and schottky contact with silicon, and moreover,
plasmonic nanoscatters efficiently harvest the complement spectrum
components for charge generation. The present approach combines the
capacities of nanoscale color sorting and photoelectric converting
at a negligible cost of efficiency, thus providing a broad flexibility
of being utilized in various optoelectronic applications including
self-powered display, filter-free imaging, and colorful photovoltaics.
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filter-free imagingcharge generationplasmonic nanoscatterscomplement spectrum componentsoptoelectronic applicationsindex configurationssilicon hostindium tin oxidephotocurrent generationschottky contactcolorationpower lossreference devicesnanoscale colorplasmonic colorsPlasmonic Scattering Color Plasmonicantireflection coatingsITOself-powered displayaluminum nanodisksMultifunctional Silicon Optoelectronics Integratedefficiencymultifunctional optoelectronic applications
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