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URL:https://murmitoyen.com/events/vanille/udem/detail/356834-luminescent-an
 d-microtracking-solar-concentration-n-noel-chris-giebink-penn-state
LOCATION:Polytechnique Montréal - Pavillon J.-Armand-Bombardier\, 5155\, a
 venue Decelles\, Montréal\, QC\, Canada\, H3T 2B1
SUMMARY:Luminescent and microtracking solar concentration – Noel Chris Gi
 ebink\, Penn State
DESCRIPTION:Noel Chris Giebink\, Department of Electrical Engineering\, The
  Pennsylvania State University\, University Park\, PA\, USASunlight is a d
 iffuse energy resource and thus all methods of solar energy conversion and
  use by society share one feature in common – concentration. Manipulatin
 g sunlight directly offers many prospects for a sustainable energy future\
 , for example by reducing the cost of solar cells through optical concentr
 ation\, routing natural daylight into buildings through optical fiber\, or
  tailoring the distribution of light delivered to an algae culture to impr
 ove biofuel productivity. This talk will focus on recent developments in l
 uminescent and quasi-static microtracking concentration that afford a gene
 ral opportunity to address these applications in a potentially inexpensive
  and scalable fashion.Whereas passive geometric optical concentrators are 
 invariably bound by the sine limit\, luminescent solar concentrators (LSCs
 ) operate by absorbing and re-emitting sunlight\, and can in principle ach
 ieve high concentration ratio (>100x) without tracking the Sun. We are exp
 loring opportunities to improve LSC performance and diversify their applic
 ation by photonically controlling the luminescent étendue. Leveraging hig
 hly directional luminescence within the framework of nonimaging optics\, w
 e demonstrate routes to both increase concentration ratio for photovoltaic
 s and alternatively to optimize the distribution of light within closed ph
 otobioreactors for enhanced algal biofuel productivity. Recent efforts in
  high efficiency concentrating photovoltaics (CPV) will also be discussed\
 , focusing on a new paradigm that combines high efficiency microscale sola
 r cells with wide-angle microtracking to enable 200x concentration ratio C
 PV panels < 1 cm thick that accomplish full-day tracking with < 1 cm later
 al translation. This approach is experimentally validated outdoors for a s
 mall-scale panel prototype featuring 3D printed plastic lenslet arrays and
  GaAs microcell photovoltaics\, representing an important step toward the 
 goal of high efficiency embedded CPV systems that can be integrated on bui
 lding rooftops and other limited-space urban environments in the form fact
 or of standard fixed panel PV.Site web du groupe du  Prof. GiebinkCette c
 onférence est présentée par le RQMP Versant Nord du Département de ph
 ysique de l'Université de Montréal et le Département de génie physique
  de Polytechnique Montréal.
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