Radial junction solar cells prepared on single crystalline silicon wafers by metal-assisted etching

2017-05-01
BAYTEMİR, Gulsen
ES, FIRAT
ALAGOZ, Arif Sinan
Turan, Raşit
Radial junction solar cells have been proposed as an alternative device geometry to conventional planar solar cells with its remarkable electrical and optical performance. In this geometry, densely packed nano/micropillars allow minority carrier collection in the radial direction and shorten carrier diffusion length to p-n junction. Besides, reduced reflection from surface and increased light trapping in nano/micropillars enhance solar cell efficiency. In this study, photolithography and metal-assisted etching (MAE) techniques are used to form well-ordered silicon micropillar arrays; standard doping, passivation, and metallization steps are followed to form radial junction solar cells. The effect of micropillar length on optical and electrical performance of the solar cells have been investigated. We observed that optical reflection from solar cells surface decreased with increasing micropillar length, hence solar cell short circuit current (J(sc)) and efficiency (eta) increased. Our best solar cell efficiency is 15.6% and this is one of the highest reported values obtained from the radial junction solar cells prepared by MAE technique. (C) 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS

Suggestions

Radial junction solar cells prepared on crystalline si by metal assisted electroless etching
Baytemir, Gülsen; Es, Fırat; Turan, Raşit (null; 2016-06-05)
Radial junction solar cell has been proposed as an alternative device geometry to conventional planar solar cells with its remarkable electrical and optical performance. In this geometry, micro/nano pillars on the surface allow minority carrier collection in the radial direction and shorten the carrier diffusion length. Moreover, increased light trapping in the pillars and reduced reflection from surface enhance the solar cell efficiency. In their letter (article no. 1600444) Baytemir et al. have investigat...
Comparison of influence of gold contamination on the performances of planar and three dimensional c-Si solar cells
Baytemir, Gulsen; Es, Firat; Turan, Raşit (2019-11-01)
Radial junction solar cell is proposed as an alternative device geometry to planar junction solar cell due to its superior electro-optical performance. In this geometry, densely-packed micropillars enable the collection of minority carriers in the radial direction. Thus, the distance that carriers should travel to reach the p-n junction is shortened, allowing the use of low quality materials with poor carrier lifetime. In this study, we have experimentally studied the advantage of radial junction approach i...
Three dimensional crystalline silicon solar cells
Baytemir, Gülsen; Turan, Raşit; Department of Physics (2018)
Three-dimensional crystalline silicon solar cells have been attracting attention with its remarkable electrical and optical performance. In this geometry, nano/micropillars allow minority carrier collection in the radial direction and shorten the path length of the photogenerated carriers. Furthermore, with appropriate geometry of the pillars the solar cell efficiency is enhanced due to the reduced surface reflectance and increased light harvesting. Throughout this study, metal assisted etching (MAE), a top...
Nickel assisted chemical etching for multi-crystalline Si solar cell texturing: a low cost single step alternative to existing methods
Takaloo, Ashkan Vakilipour; ES, FIRAT; BAYTEMİR, Gulsen; Turan, Raşit (2018-07-01)
The texturing of silicon surfaces is a well-known method of reducing the reflection from the surface of crystalline Si solar cell devices. With the utilization of diamond wires in recent advances in wafer slicing technology, surface texturing for the multi-crystalline Si wafers by the traditional acid-based texturing technique has become difficult. Metal-Assisted Etching (MAE) has been shown to be a promising and low-cost alternative to the traditional acid-based isotropic texturing. This paper reports, for...
Fabrication and characterization of PEDOT:PSS hole transport layers for silicon solar cells
Türkay, Deniz; Yerci, Selçuk; Department of Micro and Nanotechnology (2019)
Heterojunction silicon solar cells have gained considerable interest in recent years with the demonstration of record-high device performances. However, these devices are typically based on inorganic layers fabricated at high temperatures under vacuum environment, using toxic precursors. The low temperature budget, non-toxic chemical contents, and wide range of adjustability in physical and electrical properties make poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) a promising candidate a...
Citation Formats
G. BAYTEMİR, F. ES, A. S. ALAGOZ, and R. Turan, “Radial junction solar cells prepared on single crystalline silicon wafers by metal-assisted etching,” PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, pp. 0–0, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39186.