Optimum Design in series connected DSCs and PSCs Modules
Man Gu Kang a, Seong Hyun Lee a
a ICT Materials Research Group, ICT Materials & Components Research Laboratory, Electronics and Telecommunications Research Institute
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Benidorm, Spain, 2018 May 28th - 31st
Organizers: Emilio Palomares and Rene Janssen
Poster, Man Gu Kang, 231
Publication date: 21st February 2018

In previous theoretical studies, the width of the active area of solar cells has often been optimized by calculating power loss [1-2] owing to several factors, including interconnection area, contact layer absorption, and sheet resistances of contact-layers. For small power losses, the fraction of power lost caused by the contact-layer sheet resistance was estimated from the Joule heating losses, assuming uniform current density (i.e., a constant resistance model). Recently, the performance of solar cells has been simulated using numerical methods. Numerical methods are advantageous to provide the optimum design of solar cell module and its operating mechanism. However, numerical methods are generally inadequate for a fast calculation and an intuitive prediction of module performance.

This study presents a method for determining the optimum active-area width (OAW) of solar cells in module architecture. The current density–voltage curve of a reference cell with a narrow active-area width is used to reproduce the current density profile in the test cell whose active area width is to be optimized. Further, we determined the OAW that yields the maximum efficiency by calculating efficiency as a function of the active area width. The proposed method can be applied to the design of the active area of solar cells in series connection and discussed the dependence of OAW on various properties and design parameters such as the sheet resistances of contact-layers, dead region width, and the intensity of light.

This work was supported by the New Renewable Energy R&D Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant, funded by the Korean government (MOTIE) (No.20163010012470).

[1] M. W. Rowell and M. D. McGehee, Energy Environ. Sci., 2011, 131 - 134.

[2] H. Hoppe, M. Seeland, and B. Muhsin, Sol. Energy Mater. Sol. Cells, 2012, 119 - 126.

[3] K. S. Lee, Progress in photovoltaics: research and applications, 2013, 195 - 201.

[4] K. S. Lee and M. G. Kang, ETRI J, 2017, 859-865

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