Investigation of back surface fields effect on bifacial solar cells

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A bifacial solar cell, in contrast with a conventional monofacial solar cell, produces photo-generated current from both front and back sides. Bifacial solar cell is an attractive candidate for enhancing photovoltaic (PV) market competitiveness as well as supporting the current efforts to increase efficiency and lower material costs. This paper reports on the fabrication of bifacial solar cells using phosphorus-oxytrichloride (POCl3) emitter formation on p-type, nanotextured silicon (Si) wafer. Backside surface field was formed through Al-diffusion using conventional screen-printing process. Bifacial solar cells with a structure of n+pp+ with and without back surface field (BSF) were fabricated in which silicon nitride (SiN) anti reflection and passivation films were coated on both sides, followed by screen printing of Argentum (Ag) and Argentum/Aluminum (Ag/Al) on front and back contacts, respectively. Bifacial solar cells without BSF exhibited open circuit voltage (VOC) of 535 mV for front and 480 mV for back surface. With Al-alloyed BSF bifacial solar cells, the VOC improved to 580 mV for the front surface and 560 mV for the back surface. Simulation of bifacial solar cells using PC1D and AFORS software demonstrated good agreement with experimental results. Simulations showed that best bifacial solar cells are achieved through a combination of high lifetime wafer, low recombination back surface field, reduced contact resistance, and superior surface passivation.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages322-335
Number of pages14
Volume1502
Edition1
DOIs
Publication statusPublished - 2012
EventInternational Conference on Nanotechnology - Research and Commercialization 2011, ICONT 2011 - Sabah
Duration: 6 Jun 20119 Jun 2011

Other

OtherInternational Conference on Nanotechnology - Research and Commercialization 2011, ICONT 2011
CitySabah
Period6/6/119/6/11

Fingerprint

solar cells
volatile organic compounds
printing
passivity
wafers
contact resistance
open circuit voltage
silicon nitrides
phosphorus
emitters
simulation
costs
computer programs
aluminum
life (durability)
fabrication
silicon

Keywords

  • Bifacial solar cell
  • Crystalline silicon
  • nanotextured srfaces
  • POCl diffusion
  • thin Si solar cells

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Investigation of back surface fields effect on bifacial solar cells. / Sepeai, Suhaila; Sulaiman, M. Y.; Sopian, Kamaruzzaman; Zaidi, Saleem H.

AIP Conference Proceedings. Vol. 1502 1. ed. 2012. p. 322-335.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sepeai, S, Sulaiman, MY, Sopian, K & Zaidi, SH 2012, Investigation of back surface fields effect on bifacial solar cells. in AIP Conference Proceedings. 1 edn, vol. 1502, pp. 322-335, International Conference on Nanotechnology - Research and Commercialization 2011, ICONT 2011, Sabah, 6/6/11. https://doi.org/10.1063/1.4769154
Sepeai, Suhaila ; Sulaiman, M. Y. ; Sopian, Kamaruzzaman ; Zaidi, Saleem H. / Investigation of back surface fields effect on bifacial solar cells. AIP Conference Proceedings. Vol. 1502 1. ed. 2012. pp. 322-335
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