English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

20 páginas, 5 figurasIn order to enhance optical absorption, light trapping by multiple scattering is commonly achieved\udin dye sensitized solar cells by adding particles of a different sort. Herein we propose a theoretical\udmethod to find the structural parameters (particle number density and size) that optimize conversion\udefficiency for electrodes of different thickness containing spherical inclusions of diverse\udcomposition. Our work provides a theoretical framework in which the response of solar cells\udcontaining diffuse scattering particles can be rationalized. Optical simulations are performed by\udcombining a Monte Carlo approach with Mie theory, in which the angular distribution of scattered\udlight is accounted for. Several types of scattering centers, such as anatase, gold and silver particles,\udas well as cavities, are considered and their effect compared. Estimates of photovoltaic\udperformance, insight into the physical mechanisms responsible for the observed enhancements, and\udguidelines to improve the cell design are provided. We discuss the results in terms of light transport\udin weakly disordered optical media and find that the observed variations between the optimum\udscattering configurations attained for different electrode thickness can be understood as the result of\udthe randomization of light propagation direction at different depths within the active layer. A\udprimary conclusion of our study is that photovoltaic performance is optimised when the scattering\udproperties of the film are adjusted so that the distance over which incident photons are randomized\udis comparible to the thickness of the film. This simple relation could also be used as a design rule to\udattain the optimum optical design in other photovoltaic materials.The research leading to these results has received funding from the European Research Council\udunder the European Union's Seventh Framework Programme (FP7/2007-2013)/ERC grant\udagreement n° 307081 (POLIGHT), the Spanish Ministry of Economy and Competitiveness under\udgrants MAT2011-23593 and CONSOLIDER HOPE CSD2007-00007, and the Junta de Andalucía\udunder grants FQM3579 and FQM5247. PB is grateful to funding from the EPSRC APEX project (EP/H040218/1) and fellowship (EP/J002305/1. The authors also thank the Unit of Information Resources for Research (URICI-CSIC) for the co-financing of this publication in Open Access.Peer reviewe

Dye sensitized solar cells as optically random photovoltaic media