Chander, Nikhil and Singh, Sujata and Iyer, S. Sundar Kumar (2017) Stability and reliability of P3HT:PC61BM inverted organic solar cells. Solar Energy Materials and Solar Cells , 161. pp. 407-415. ISSN 0927-0248

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Abstract

Improving the stability and reliability of organic photovoltaic (OPV) devices is an area of intense research as it is the major barrier in the commercialization of these devices. We study the stability of inverted structured OPV devices in the present work. A large number of these were fabricated and their shelf life limes were recorded. P3HT devices show an average T80 (time in which cell efficiency falls to 80% of its initial value) of 34 days. Some of the devices were tested in actual working conditions outdoors in sunlight. A very low T80 value of 12 h was observed during the outdoor testing. Thermal degradation study was performed on the devices at 65 degrees C in dark and an average T80 of 200 h was obtained. Signatures of trap formation were observed by analysing and comparing the dark current-voltage characteristics of the pristine and degraded devices. The solar cells degrade due to trap formation in the active layer and formation of charge extraction barriers at the contacts.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M\S Elsevier.
Subjects:	Energy Fuels Materials Science Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	22 Feb 2019 10:52
Last Modified:	22 Feb 2019 10:52
URI:	http://npl.csircentral.net/id/eprint/2856

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