MODIFICATION OF BSF LAYER IN BIFACIAL SOLAR CELL VIA PHOTOSENSITIZATION OF MOLECULES NANOSTRUCTURE
DOI:
https://doi.org/10.11113/jt.v78.9100Keywords:
Bifacial solar cell, back surface field, molecules nanostructure, quantum efficiency, time resolved photoluminescenceAbstract
Surface passivation is the most significant step to keep the recombination loss at a tolerable minimum and avoid an unacceptably large efficiency loss when moving towards thinner silicon material. In this study, the modification and photosensitization on back surface field (BSF) of bifacial solar cell was investigated by using dye molecules nanostructure namely DiO. The DiO dye molecules nanostructure was passivated on SiNW and BSF layers using spin-coating method. The energy gaps of DiO dye are 2.14 eV (DiO in chloroform), 2.13 eV (DiO on silicon nanowire (SiNW)) and 2.12 eV (DiO on BSF). The time resolved photoluminescence increased with the DiO dye coated on SiNW ( 14Ä">  = 1.24 nm) and BSF layers ( 14Ä">  = 0.93 nm) compared to DiO dye in chloroform ( 14Ä">  = 0.54 nm). The light trapping inside the interface layers of DiO dye/silicon indicating a slow process of charge recombination before its reach equilibrium states, it is due to interface interaction bonding within boundary layers and dye molecules nanostructure. The short circuit current density also increased about 25% from 4.44 to 5.56 mA/cm2 when applying the dye molecules nanostructure on BSF of the cell. Collection of photo carrier lead of internal and external quantum efficiency improved about 19% and 25%, respectively, is mainly due to energy transported to the junction. The photo-generated electron on DiO dye lead to improvement in the exciton dissociation efficiency leading to increase in the electrical properties.
References
Nelson, J. 2003. The Physics of Solar Cells. London: Imperial College Press.
Wenham, S. R., M. A. Green, M. E. Watt, and R. Corkish. 2009. Applied Photovoltaic. Second Edition. UNSW: Centre for Photovoltaic Engineering.
Takato, H., Sakata, I., and Shimokawa, R. 2006. Modification of Surface Potential of Silicon by Organic Molecules. IEEE 4th World Conference on Photovoltaic Energy Conference. 249-252.
Aberle, A. G. 2001. Overview on SiN Surface Passivation of Crystalline Silicon Solar Cells. Solar Energy Materials and Solar Cells.65 (1-4): 239-248.
Ciampi, S., Harper, J. B, and Gooding J. J. 2010. Wet Chemical Routes To The Assembly Of Organic Monolayers On Silicon Surfaces Via The Formation Of Si–C Bonds: Surface Preparation, Passivation And Functionalization. Chemical Society Reviews. 39: 2158-83.
Sieval, A. B, HoutBvd, Zuilhof, H., and Sudhölter, E. J. R. 2001. Molecules Modeling of Covalently Attached Alkyl Monolayers on the Hydrogen-Terminated Si(111) Surface. Langmuir.17: 2172-81.
Sieval, A. B., Huisman, C. L., Schonecker, A., Schuurmans, F. M., Van Der Heide, A. S. H., Goossens, A., Sinke, W. C. Zuilhof, H., and Sudholter, E. J. R. 2003. Silicon Surface Passivation by Organic Monolayers: Minority Charge Carrier Lifetime Measurements and Kelvin Probe Investigations. J. Phys. Chem. B. 107(28): 6846-6852.
Choi, J-H., Roh, S-C., Jung, J-D., and Seo, H-I. 2013. Chemical HF Treatment for Rear Surface Passivation of Crystalline Silicon Solar Cells. Transactions on Electrical and Electronic Materials.14: 203-7.
Angermann, H. 2002. Characterization of Wet-Chemically Treated Silicon Interfaces By Surface Photovoltage Measurements. Anal Bioanal Chem. 374: 676-80.
Nemanick, E. J., Hurley, P. T., Brunschwig, B. S., and Lewis, N. S. 2006. Chemical And Electrical Passivation Of Silicon (111) Surfaces Through Functionalization With Sterically Hindered Alkyl Groups. Journal of Physical Chemistry B. 110: 14800-8.
Danos, L., Greef, R., and Markvart, T. 2008. Efficient Flourescence Quenching Near Crystalline Silicon from Langmuir-Blodgett Dye Films. Thin Solid Films. 516(20): 7251-7255.
Danos, L., and Markvart, T. 2009. Efficient Light Harvesting with LB Films for Application in Crystalline Silicon Solar Cells.Materials Research Society Symposium Proceedings. 1120: 1120-M01-04.
Danos, L., and Markvart, T. 2010. Excitation Energy Transfer Rate from Langmuir Blodgett (LB) Dye Monolayers to Silicon: Effect of Aggregate Formation. Chemical Physics Letters.
Kuhn, H. 1970. Classical Aspects of Energy Transfer in Molecules System. The Journal of Chemical Physics. 53(1): 101-108.
Dexter, D. L. 1979. Two Ideas on Energy Transfer Phenomena: Ion-pair Effects Involving the OH Stretching Mode, and Sensitization of Photovoltaic Cells. Journal of Luminescence. 18-18: 779-784
Jia, G., Steglich, M., Sill, I., and Falk, F. 2012. Core-shell Heterojunction Solar Cells on Silicon Nanowire Arrays. Solar Energy Materials and Solar Cells. 96: 226-230.
Canham, L. T. 1990. Silicon Quantum Wire Array Fabrication by Electrochemical and Chemical Dissolution of Wafers. Applied Physics Letters. 57: 1046-8.
Ee, D. T. H., Sheng, C. K., and Isa, M. I. N. 2011. Photoluminescence of Porous Silicon Prepared by Chemical Etching Method. The Malaysian Journal of Analytical Sciences. 15 (2): 227-231.
Sepeai, S., Sulaiman, M. Y., Sopian, K., and Zaidi, S. H. 2012. Surface Passivation Studies on n+pp+ Bifacial Solar Cell. International Journal of Photoenergy. Article ID 278764: 1-7.
Fonash, S. J. 2010. Solar Cell Device Physics. Burlington, USA: Academic Press.
Downloads
Published
Issue
Section
License
Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.
