@inproceedings{dc64428aeb7c48d88a892094d4aef953,
title = "Ultralight-trapping filters with volume reflection holograms",
abstract = "Light trapping is a useful approach for increasing the absorption of thin film photovoltaic (PV) cells. Simple light trapping can be achieved by incorporating a scattering layer on the top and bottom surface of cells and can increase absorption by a factor of 4n2. Recently, ultralight trapping using Rugate and 1-D photonic bandgap filters have been proposed to increase light trapping by a factor of 4n2 /sin2θ, where θ is half of the acceptance angle. In this paper, we present the design of a holographic ultralight trapping filter. The holographic filter can be implemented in large areas at a low cost, which makes it scalable for PV applications. A design is presented that increases the optical path length for near bandgap wavelengths in a thin-film silicon PV cell. The optical path length enhancement is converted to electrical output using the PC-1D simulation software. The short-circuit current for a 10-μm-thick silicon PV cell increases by nearly 14.7% relative to a cell without light trapping.",
keywords = "Holographic optical element, light trapping, photovoltaic (PV), thin-film silicon solar cells",
author = "Deming Zhang and Russo, {Juan M.} and Michael Gordon and Shelby Vorndran and Kostuk, {Raymond K.}",
year = "2012",
doi = "10.1109/pvsc-vol2.2012.6656775",
language = "English (US)",
isbn = "9781467328883",
series = "Conference Record of the IEEE Photovoltaic Specialists Conference",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "PART 2",
booktitle = "2012 IEEE 38th Photovoltaic Specialists Conference, PVSC 2012",
edition = "PART 2",
note = "2012 IEEE 38th Photovoltaic Specialists Conference, PVSC 2012 ; Conference date: 03-06-2012 Through 08-06-2012",
}