Reduction of Escape Cone Losses in Luminescent Solar Concentrators Using High-Contrast Gratings

Autor: Ameen Elikkottil, K.S. Reddy, Bala Pesala, Kiran Vaddi
Rok vydání: 2020
Předmět:
Zdroj: Advances in Energy Research, Vol. 1 ISBN: 9789811526657
DOI: 10.1007/978-981-15-2666-4_5
Popis: Luminescent solar concentrators (LSCs) are explored as a cost-effective alternative to traditional solar PV technologies. LSCs based on quantum dots with large Stokes shifts are used to reduce the photon reabsorption losses. However, LSC design still suffers from escape cone losses resulting in inefficient guiding of light to the edges. Here, we propose the integration of high index contrast gratings on the backside of the LSC substrate to reduce these losses. Grating parameters (period, duty cycle, and thickness) are optimized for increasing light guiding efficiency to the edge of the LSC. Simulation results show that an improvement of 14% in the guiding efficiency is achieved compared to the conventional LSCs.
Databáze: OpenAIRE