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Proceedings Paper

Nanostructure-based enhancement of performance in thin-film photovoltaic devices
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Paper Abstract

Incorporating nanostructures in thin film solar cells is an interesting way to improve the optoelectronic performance of the device by means of light-trapping and light management. However, designing the optimal shape and dimensions of the nanostructure is of critical importance for enhanced device performance. It is desired to have synergistic effects in the optical and electronic domains to result in a better performance. However in some nanostructures, the geometrically induced effects in these two domains might counteract resulting in a relatively inferior performance in the nano-structured device. We show this with a simulated example of a nanostructured organic solar cell with nano-pillar transparent electrodes. Here it is seen that the enhancement in photocurrent due to nano-scale scattering through the walls of the pillar is suppressed by the steady-state potential distribution induced by the nano-scale geometry. As a result of poor charge separation in the regions around the pillar, the photocurrents decrease. It is thus highlighted that the opto-electronic transport and electric field enhancement based co-degisn of nanostructures is important to fully understand the nano-scale effects.

Paper Details

Date Published: 14 March 2016
PDF: 5 pages
Proc. SPIE 9743, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices V, 97431J (14 March 2016); doi: 10.1117/12.2217944
Show Author Affiliations
Jagdish A. K., Indian Institute of Science (India)
Sibimol Luke, Indian Institute of Science (India)
Praveen C. Ramamurthy, Indian Institute of Science (India)
D. Roy Mahapatra, Indian Institute of Science (India)
Gopalakrishna Hegde, Indian Institute of Science (India)

Published in SPIE Proceedings Vol. 9743:
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices V
Alexandre Freundlich; Laurent Lombez; Masakazu Sugiyama, Editor(s)

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