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

Jagdish, AK and Luke, Sibimol and Ramamurthy, Praveen C and Mahapatra, Roy D and Hegde, Gopalkrishna (2016) Nanostructure-based enhancement of performance in thin-film photovoltaic devices. In: Conference on Physics, Simulation, and Photonic Engineering of Photovoltaic Devices V, FEB 15-17, 2016, San Francisco, CA.

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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.

Item Type:	Conference Proceedings
Series.:	Proceedings of SPIE
Additional Information:	Copy right for this article belongs to the SPIE-INT SOC OPTICAL ENGINEERING, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering) Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	22 Oct 2016 10:27
Last Modified:	22 Oct 2016 10:27
URI:	http://eprints.iisc.ac.in/id/eprint/55123

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