Effect of the short collection length in silicon microscale wire solar cells

Hyunyub Kim, Joondong Kim, Eunsongyi Lee, Dong Wook Kim, Ju Hyung Yun, Junsin Yi

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32 Scopus citations

Abstract

Electrical and optical properties of silicon microscale wire (SiMW) solar cells were investigated. Diverse designs were applied for SiMW geometries as light absorbers. Finite-difference time-domain simulation shows a focused optical field in the wires inducing an optical absorption enhancement in SiMW solar cells. SiMW solar cells provided remarkably higher Voc values (0.597-0.61 V) than that of the planar solar cell (0.587 V). As for the electrical aspects, the position of the space charge region in a SiMW directly affects the carrier collection efficiency according to the SiMW diameter and significantly modulates the photogenerated-currents and voltages in solar cells.

Original languageEnglish
Article number193904
JournalApplied Physics Letters
Volume102
Issue number19
DOIs
StatePublished - 13 May 2013

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