Print Email Facebook Twitter Decoupled front/back dielectric textures for flat ultra-thin c-Si solar cells Title Decoupled front/back dielectric textures for flat ultra-thin c-Si solar cells Author Isabella, O. (TU Delft Photovoltaic Materials and Devices) Vismara, R. (TU Delft Photovoltaic Materials and Devices) Ingenito, A. (TU Delft Photovoltaic Materials and Devices) Rezaei, N. (TU Delft Photovoltaic Materials and Devices) Zeman, M. (TU Delft Electrical Sustainable Energy) Department Electrical Sustainable Energy Date 2016-03-01 Abstract The optical analysis of optically-textured and electrically-flat ultra-thin crystalline silicon (c-Si) slabs is presented. These slabs were endowed with decoupled front titanium-dioxide (TiO2) / back silicon-dioxide (SiO2) dielectric textures and were studied as function of two types of back reflectors: standard silver (Ag) and dielectric modulated distributed Bragg reflector (MDBR). The optical performance of such systems was compared to that of state-of-the-art flat c-Si slabs endowed with so-called front Mie resonators and to those of similar optical systems still endowed with the same back reflectors and decoupled front/back texturing but based on textured c-Si and dielectric coatings (front TiO2 and back SiO2). Our optimized front dielectric textured design on 2-µm thick flat c-Si slab with MDBR resulted in more photo-generated current density in c-Si with respect to the same optical system but featuring state-of-the-art Mie resonators ( + 6.4%), mainly due to an improved light in-coupling between 400 and 700 nm and light scattering between 700 and 1050 nm. On the other hand, the adoption of textured dielectric layers resulted in less photo-generated current density in c-Si up to −20.6% with respect to textured c-Si, depending on the type of back reflector taken into account. Subject Diffraction and gratingsSilicon To reference this document use: http://resolver.tudelft.nl/uuid:8b8e325a-9e4d-493f-a382-b26c85c806f1 DOI https://doi.org/10.1364/OE.24.00A708 ISSN 1094-4087 Source Optics Express, 24 (6), A708-A719 Part of collection Institutional Repository Document type journal article Rights © 2016 O. Isabella, R. Vismara, A. Ingenito, N. Rezaei, M. Zeman Files PDF oe_24_6_A708.pdf 1.96 MB Close viewer /islandora/object/uuid:8b8e325a-9e4d-493f-a382-b26c85c806f1/datastream/OBJ/view