Laser illumination for manipulation of hydrogen charge states in silicon solar cells |
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| Authors: | Phillip Hamer Sisi Wang Brett Hallam Stuart Wenham Chee Mun Chong Alison Wenham Malcolm Abbott |
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| Affiliation: | 1. The School of Photovoltaic and Renewable Energy Engineering, The University of New South Wales, Sydney NSW 2052, Australia;2. Phone: +61 403 277 879 |
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| Abstract: | This Letter investigates the important parameters of illumination for control of hydrogen charge states in p‐type silicon solar cells. Through variations in the wavelength and intensity of illumination, evidence is provided for the importance of the neutral charge state of interstitial hydrogen, H0, for the passivation of defects in upgraded metallurgical grade (UMG) silicon. It is shown that through this approach minority carrier lifetimes may be achieved in excess of those realised through previous techniques, resulting in open‐circuit voltages (iVOC) over 710 mV. (© 2015 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim) |
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| Keywords: | silicon hydrogen defects passivation solar cells |
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