Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.solener.2020.03.087
Title: Characterization of screen printed and fire-through contacts on LPCVD based passivating contacts in monoPoly (TM) solar cells
Authors: Pradeep Padhamnath 
Jammaal Kitz Buatis 
Ankit Khanna 
Nitin Nampalli 
Naomi Nandakumar 
Vinodh Shanmugam 
Armin G. Aberle 
Shubham Duttagupta 
Keywords: Science & Technology
Technology
Energy & Fuels
Metallization
Screen printing
Recombination
Passivation
Passivating contacts
Polysilicon
RECOMBINATION LOSSES
SI
QUALITY
Issue Date: 15-May-2020
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Citation: Pradeep Padhamnath, Jammaal Kitz Buatis, Ankit Khanna, Nitin Nampalli, Naomi Nandakumar, Vinodh Shanmugam, Armin G. Aberle, Shubham Duttagupta (2020-05-15). Characterization of screen printed and fire-through contacts on LPCVD based passivating contacts in monoPoly (TM) solar cells. SOLAR ENERGY 202 : 73-79. ScholarBank@NUS Repository. https://doi.org/10.1016/j.solener.2020.03.087
Abstract: © 2020 International Solar Energy Society In this work we have characterized screen-printed passivating contacts formed by different commercially available fire-through pastes on phosphorus doped (n+) polysilicon (poly-Si) layers at the rear side of monoPoly™ solar cells. Extremely low recombination current density under metal contacts (J01,metal) of 35–45 fA/cm2 and excellent specific contact resistivity (ρc) values of ~ 1.3 mΩ-cm2 are obtained for two different thicknesses of poly-Si (150 nm and 250 nm) used in this work. We demonstrate that, although the metal induced recombination increases with reducing thickness of the poly-Si layer, thinner poly-Si layers can lead to higher efficiencies on account of reduced parasitic absorption leading to higher cell current. A champion efficiency of 22.6% is reported for busbarless monoPoly™ cells with the best performing fire-through (FT) paste on large area (244.3 cm2) commercially available Czochralski grown Si wafers.
Source Title: SOLAR ENERGY
URI: https://scholarbank.nus.edu.sg/handle/10635/170755
ISSN: 0038-092X
DOI: 10.1016/j.solener.2020.03.087
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