NDLI: I–V curve characteristics of solar cells on composite substrate under mechanical loading

Content Provider	Springer Nature Link
Author	Kim, Jong Cheon Cheong, Seong Kyun
Copyright Year	2014
Abstract	This research is aimed to conduct a characterization of I–V (current-voltage) curve changes in order to interpret the effects of physical defects such as microcracks of solar cells installed over structures to which mechanical load is applied on the power generation performance of solar cells, as well as to conduct fractography to interpret causes for reducing the power generation performance of the cells. To accomplish this, tensile specimens to which a mechanical load would be applied were produced using composite materials, which are representative light materials and solar cells that were attached to the specimens using the adhesive property of EVA film. In the experiment, mono-crystalline silicon solar cells were used, which are breakable and whose efficiency is approximately 24.2% (lab.). Also, in order to evaluate the power generation performance of solar cells under mechanical loading in real-time, a measuring device was designed to compare and evaluate the time point and property of fracture under mechanical loading. Moreover, fractography was conducted to analyze and consider causes for reducing the efficiency of solar cells. As a result of the experiment, it was found that the mechanical load applied to solar cells caused cracks to the surface and interior of the cells, which in turn reduced the I$_{sc}$ value and the V$_{oc}$ value of the I–V curve. The present study provides an initial set of valuation parameters in the maintenance and management of installed solar cells when applying solar cell technology to dynamic structures.
Starting Page	1691
Ending Page	1696
Page Count	6
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	28
Issue Number	5
e-ISSN	19763824
Language	English
Publisher	Korean Society of Mechanical Engineers
Publisher Date	2014-05-20
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	I-V curve Mono-crystalline silicon solar cell Mechanical loading Micro-cracking Mechanical Engineering Vibration, Dynamical Systems, Control Industrial and Production Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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