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AuthorJeyakumar, R.
AuthorMaiti, T. K.
AuthorKhader, Mahmoud M.
AuthorKandasamy, Nikesh
AuthorVerma, Amit
AuthorNekovei, Reza
AuthorKumar, J.
AuthorBalaji , Nagarajan
AuthorYi, Junsin
Available date2020-08-20T11:44:17Z
Publication Date2017
Publication NameJournal of Materials Science: Materials in Electronics
ResourceScopus
URIhttp://dx.doi.org/10.1007/s10854-017-6720-1
URIhttp://hdl.handle.net/10576/15727
AbstractWe report on the modeling and performance optimization studies of point contact back heterojunction (BHJ) solar cells. BHJ solar cell technology is a combination of front heterojunction (a-Si:H/c-Si) solar cell technology and interdigitated back junction c-Si solar cell technology. In this work, both emitter (p+-a-Si:H) and back surface field (BSF, n+-a-Si:H) were formed at the rear side as an array of interdigitated points, where their respective contacts formed an interdigitated pattern. The gap between p-type and n-type contact fingers was fixed at 10mm. The n+-a-Si:H (i.e. BSF) circular diameter was fixed while emitter size was varied, and vice versa. Simulation was also performed with and without passivation layer underneath emitter and BSF. We also investigated the impact of surface texture size on cell efficiency. By varying surface texture size, viz. pyramid height and base width, an efficiency as high as 26.61% was obtained with 761 mV Voc, 41mA/cm2 Jsc, and 84.5% FF for a small pyramid structure with 2 mm height and 4mm base width.
Languageen
PublisherSpringer New York LLC
TitleHigh-efficiency c-Si based interdigitated point contact back heterojunction solar cells
TypeArticle
Pagination9697-9703
Issue Number13
Volume Number28
dc.accessType Abstract Only


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