Properties of PEDOT:PSS on Black Silicon and Hybrid Textured Surfaces

Abstract:

This work investigates properties of Poly (3,4-ethylenedioxythiophene)–poly (styrene sulfonate) (PEDOT:PSS) on black silicon (nanotextured) and hybrid textured (nanotextured/microtextured) surfaces. The black silicon (b-Si) surface is fabricated using two-step metal-assisted chemical etching (MACE) process on crystalline silicon (c-Si) while the hybrid textures are fabricated using two-step MACE process on microscale pyramids. With PEDOT:PSS, weighted average reflection (WAR) reduces from 9.2% to 7.7% for b-Si and from 7.2% to 5.2% for hybrid textures. This is due to the anti-reflective (AR) property of the polymer. Electrical characterizations of the PEDOT:PSS layer reveal higher sheet resistance (R_s), lower hole concentration (n_h) and improved mobility (μ_h) with the presence of the surface textures on c-Si, in comparison to the results from planar c-Si reference.

• Periodical: Solid State Phenomena (Volume 336)
• Pages: 109-117
• DOI: https://doi.org/10.4028/p-5o4tp7
• Online since: August 2022
• Authors: Auwal Abdulkadir, Azlan Abdul Aziz, Mohd Zamir Pakhuruddin*
• Keywords: Absorption, Black Silicon, PEDOT:PSS, Texturing

References

[1] K. Chen, T.P. Pasanen, V. Vähänissi, H. Savin, Effect of MACE Parameters on Electrical and Optical Properties of ALD Passivated Black Silicon, (2019).

DOI: 10.1109/jphotov.2019.2917787

[2] Z. Zhao, P. Li, Y. Wei, C. Lu, X. Tan, A. Liu, 17.3% Efficient Black Silicon Solar Cell Without Dielectric Antireflection Coating, Sol. Energy. 110 (2014) 714–719.

DOI: 10.1016/j.solener.2014.10.029

[3] F.J. Wendisch, M. Abazari, H. Mahdavi, M. Rey, N. Vogel, M. Musso, O. Diwald, G.R. Bourret, Morphology-Graded Silicon Nanowire Arrays via Chemical Etching: Engineering Optical Properties at the Nanoscale and Macroscale, ACS Appl. Mater. Interfaces. 12 (2020) 13140–13147.

DOI: 10.1021/acsami.9b21466

[4] H. Park, M. Ju, M.Q. Khokhar, E.C. Cho, Y. Kim, Y. Cho, J. Yi, Surface Modifications for Light Trapping in Silicon Heterojunction Solar Cells: A Brief Review, Trans. Electr. Electron. Mater. (2020).

DOI: 10.1007/s42341-020-00203-1

[5] C.H. Hsu, J.R. Wu, Y.T. Lu, D.J. Flood, A.R. Barron, L.C. Chen, Fabrication and characteristics of black silicon for solar cell applications: An overview, Mater. Sci. Semicond. Process. 25 (2014) 2–17.

DOI: 10.1016/j.mssp.2014.02.005

[6] G. Von Gastrow, P. Ortega, R. Alcubilla, S. Husein, T. Nietzold, M. Bertoni, H. Savin, Recombination processes in passivated boron-implanted black silicon emitters, J. Appl. Phys. 121 (2017).

DOI: 10.1063/1.4983297

[7] Z. Wang, P. Li, Z. Liu, J. Fan, X. Qian, J. He, S. Peng, D. He, M. Li, P. Gao, Hole selective materials and device structures of heterojunction solar cells: Recent assessment and future trends, APL Mater. 7 (2019).

DOI: 10.1063/1.5121327

[8] Y. Da, X. Liu, Y. Xuan, Q. Li, Photon management effects of hybrid nanostructures/microstructures for organic-silicon heterojunction solar cells, Int. J. Energy Res. 42 (2018) 4875–4890.

DOI: 10.1002/er.4249

[9] Z. Liang, M. Su, H. Wang, Y. Gong, F. Xie, L. Gong, H. Meng, P. Liu, H. Chen, W. Xie, J. Chen, Characteristics of a Silicon Nanowires/PEDOT:PSS Heterojunction and Its Effect on the Solar Cell Performance, ACS Appl. Mater. Interfaces. 7 (2015) 5830–5836.

DOI: 10.1021/am508879b

[10] W. Kern, The Evolution of Silicon Wafer Cleaning Technology, J. Electrochem. Soc. 137 (1990) 1887.

[11] A. Abdulkadir, A.A. Aziz, M.Z. Pakhuruddin, Impact of micro-texturization on hybrid micro/nano-textured surface for enhanced broadband light absorption in crystalline silicon for application in photovoltaics, Mater. Sci. Semicond. Process. 105 (2020) 104728.

DOI: 10.1016/j.mssp.2019.104728

[12] A. Abdulkadir, A.A. Aziz, M.Z. Pakhuruddin, Optimization of etching time for broadband absorption enhancement in black silicon fabricated by one-step electroless silver-assisted wet chemical etching, Opt. - Int. J. Light Electron Opt. 187 (2019) 74–80.

DOI: 10.1016/j.ijleo.2019.05.019

[13] H. Mehmood, G. Bektaş, İ. Yıldız, T. Tauqeer, H. Nasser, R. Turan, Electrical, optical and surface characterization of reactive RF magnetron sputtered molybdenum oxide films for solar cell applications, Mater. Sci. Semicond. Process. 101 (2019) 46–56.

DOI: 10.1016/j.mssp.2019.05.018

[14] A. Abdulkadir, N.A.M. Noor, A.A. Aziz, M.Z. Pakhuruddin, Broadband anti-reflection in black silicon fabricated by two-step silver-assisted wet chemical etching for photovoltaics, in: Solid State Phenom., Trans Tech Publications Ltd, 2020: p.167–174.

DOI: 10.4028/www.scientific.net/ssp.301.167

[15] A. Abdulkadir, A.A. Aziz, M.Z. Pakhuruddin, Effects of silver nanoparticles layer thickness towards properties of black silicon fabricated by metal-assisted chemical etching for photovoltaics, SN Appl. Sci. 2 (2020).

DOI: 10.1007/s42452-020-2307-1

[16] P. Singh, S.K. Srivastava, M. Yameen, B. Sivaiah, V. Prajapati, P. Prathap, S. Laxmi, B.P. Singh, Vandana, C.M.S. Rauthan, P.K. Singh, Fabrication of vertical silicon nanowire arrays on three-dimensional micro-pyramid-based silicon substrate, J. Mater. Sci. 50 (2015) 6631–6641.

DOI: 10.1007/s10853-015-9210-y

[17] C.H. Hsu, S.M. Liu, W.Y. Wu, Y.S. Cho, P.H. Huang, C.J. Huang, S.Y. Lien, W.Z. Zhu, Nanostructured pyramidal black silicon with ultra-low reflectance and high passivation, Arab. J. Chem. (2020).

DOI: 10.1016/j.arabjc.2020.01.004

[18] X. Jia, C. Zhou, W. Wang, Optimization of the Surface Structure on Black Silicon for Surface Passivation, Nanoscale Res. Lett. 12 (2017) 0–6.

DOI: 10.1186/s11671-017-1910-6

[19] Y. Jiang, X. Gong, R. Qin, H. Liu, C. Xia, H. Ma, Efficiency Enhancement Mechanism for Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate)/Silicon Nanowires Hybrid Solar Cells Using Alkali Treatment, Nanoscale Res. Lett. 11(2016).

DOI: 10.1186/s11671-016-1450-5

[20] Y.S. Ahmed, T. Hadjersi, N. Khelifati, A. Manseri, H. Menari, Binary-Structured Si Surface Modification by an Alkaline Treatment: Application to Poly(3,4-Ethylenedioxythiophene)-Poly(Styrene Sulfonate)/Silicon Heterojunction Solar Cells, Silicon. (2020) 2–8.

DOI: 10.1007/s12633-020-00419-z

[21] D. Zielke, R. Gogolin, M.U. Halbich, C. Marquardt, W. Lövenich, R. Sauer, J. Schmidt, Large-Area PEDOT:PSS/c-Si Heterojunction Solar Cells With Screen-Printed Metal Contacts, Sol. RRL. 2 (2018) 2–7.

DOI: 10.1002/solr.201700191

[22] J.P. Thomas, K.T. Leung, Defect-minimized PEDOT:PSS/planar-si solar cell with very high efficiency, Adv. Funct. Mater. 24 (2014) 4978–4985.

DOI: 10.1002/adfm.201400380

[23] S.S. Yoon, D.Y. Khang, High Efficiency (>17%) Si-Organic Hybrid Solar Cells by Simultaneous Structural, Electrical, and Interfacial Engineering via Low-Temperature Processes, Adv. Energy Mater. 8 (2018) 1–8.

DOI: 10.1002/aenm.201702655

[24] Z. Yang, Z. Fang, J. Sheng, Z. Ling, Z. Liu, J. Zhu, P. Gao, J. Ye, Optoelectronic Evaluation and Loss Analysis of PEDOT:PSS/Si Hybrid Heterojunction Solar Cells, Nanoscale Res. Lett. 12 (2017) 10–15.

DOI: 10.1186/s11671-016-1790-1

[25] X. Yu, X. Shen, X. Mu, J. Zhang, B. Sun, L. Zeng, L. Yang, Y. Wu, H. He, D. Yang, High Efficiency Organic/Silicon-Nanowire Hybrid Solar Cells: Significance of Strong Inversion Layer, Sci. Rep. 5 (2015) 1–10.

DOI: 10.1038/srep17371

[26] M. Javadi, A. Mazaheri, H. Torbatiyan, Y. Abdi, Mechanism of Charge Transport in Hybrid Organic-Inorganic PEDOT:PSS/Silicon Heterojunctions, Phys. Rev. Appl. 12 (2019) 1–8.

DOI: 10.1103/physrevapplied.12.034002