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Journal of Photonics for Energy

Numerical simulation and light trapping in perovskite solar cell
Author(s): Sk M Iftiquar; Junsin Yi
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Paper Abstract

A methyl ammonium lead iodide (H3NH3PbI3)-based solar cell can have photovoltaic conversion efficiency of more than 20%, primarily because the material shows lower defect density, high carrier mobility-lifetime, and broader absorption spectra. A further improvement in device efficiency can be obtained using light capture and trapping schemes, with textured front surface and back reflector. In order to understand characteristic performance of the device, we used numerical simulation and observed that more than 20% device efficiency can be obtained if defect density of the photosensitive material remains lower than 4×1014  cm−3 and thickness 400 nm or more. Investigation of light trapping scheme shows that the current density (Jsc) can be raised with this scheme, but the most effective increase in the Jsc can be observed for 97-nm thick active layers. Reverse saturation current density of these cells that may be directly related to recombination loss of photogenerated carriers, remains low, but increases linearly with the defect density. A tandem cell with pyramidally textured front surface was investigated with such a perovskite-based top cell and Si heterojunction bottom cell; it shows an efficiency of as high as 29.5%.

Paper Details

Date Published: 1 June 2016
PDF: 10 pages
J. Photon. Energy. 6(2) 025507 doi: 10.1117/1.JPE.6.025507
Published in: Journal of Photonics for Energy Volume 6, Issue 2
Show Author Affiliations
Sk M Iftiquar, Sungkyunkwan Univ. (Republic of Korea)
Junsin Yi, Sungkyunkwan Univ. (Republic of Korea)


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