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 language | English |
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Article number | 193904 |
Journal | Applied Physics Letters |
Volume | 102 |
Issue number | 19 |
DOIs | |
State | Published - 13 May 2013 |
Bibliographical note
Funding Information:The authors acknowledge the financial support of the Korea Institute of Energy Technology Evaluation and Planning grant funded by the Ministry of Knowledge and Economy (KETEP-20113030010110) and the Converging Research Center Program through the Ministry of Education, Science and Technology (MEST, 2012K001278).