Simplified process flow for the fabrication of PERC solar cells with ion implanted emitter

Bektas, Gence
Kokbudak, Gamze
Kececi, Ahmet Emin
Butuner, Sumeyye Kocak
Asav, Hasan
Çiftpınar, Emine Hande
Canar, Hasan Huseyin
Arikan, Bulent
Turan, Rasit
Ion implanted PERC cells have already achieved power conversion efficiencies of about 20.0%. The process flows reported in the literature for the ion implanted PERC cells with commonly utilized Al2O3/SiNx rear passivation stack, which has the benefit of being less sensitive to surface roughness than SiO2/SiNx stack passivation, notably suffer from the additional process steps such as single side polishing and single side protection. Here, we present a simplified process flow for the fabrication of ion implanted PERC cells having Al2O3/SiNx stack passivation at the textured rear surface without any rear side processing, leading to a power conversion efficiency of 20% at large area. In this context, we show the sensitivity of solar cell efficiency to firing peak temperature, implantation dose, and Al2O3 thickness. The results of the present research will provide a basis for high efficiency implanted PERC cells with significantly reduced workload and cost. (c) 2021 Elsevier Ltd. All rights reserved.


Advanced electrical characterization of organic–inorganic hybrid perovskite solar cells by impedance spectroscopy
Şahiner, Mehmet Cem; Yerci, Selçuk; Department of Electrical and Electronics Engineering (2018)
The solar cells employing organic–inorganic hybrid perovskites combine high power conversion efficiency with low-cost processability. Owing to the transfer of expertise acquired in dye-sensitized solar cell research, photovoltaic perovskite research expanded in an extraordinary pace. Efficiency values escalated rapidly mostly through refinement of fabrication methods and optimization of deposition conditions. The understanding of device physics, however, lacked such momentum because the focus was mainly on ...
Modification of TiO2 and NiO charge selective mesoporous layers using excessive Y and Li additions for carbon based perovskite solar cells
Icli, Kerem Cagatay; Özenbaş, Ahmet Macit (2021-09-15)
Carbon based perovskite solar cells are rapidly emerging as promising photovoltaic devices, combining low cost production and prolonged device operation, due to the exclusion of polymeric conductors and integration of highly durable metal oxide charge selective layers. Modification of metal oxide mesoporous layers via element additions and enhancement of electrical conductivity is a major strategy for reduced internal resistances inside the cell. This work investigates the effect of excessive Y and Li addit...
Enhanced absorption of thin-film photovoltaic cells using an optical cavity
Weinstein, Lee A.; HSU, Wei-Chun; Yerci, Selçuk; Boriskina, Svetlana V.; CHEN, Gang (2015-05-01)
We show via numerical simulations that the absorption and solar energy conversion efficiency of a thin-film photovoltaic (PV) cell can be significantly enhanced by embedding it into an optical cavity. A reflective hemi-ellipsoid with an aperture for sunlight placed over a tilted PV cell reflects unabsorbed photons back to the cell, allowing for multiple opportunities for absorption. Ray tracing simulations predict that with the proposed cavity a textured thin-film silicon cell can exceed the Yablonovitch (L...
High performance PEM fuel cell catalyst layers with hydrophobic channels
Avcioglu, Gokce S.; FIÇICILAR, BERKER; BAYRAKÇEKEN YURTCAN, Ayşe; Eroğlu, İnci (2015-06-29)
Polymer electrolyte membrane fuel cell performance has been enhanced with efficient water management by modification of the structure of the catalyst layer. Polytetrafluoroethylene (PTFE) was added to the catalyst layer structure by using two-step catalyst ink preparation method. Physical and electrochemical characterization of catalyst layers with hydrophobic nanoparticles were investigated via TGA-DTA, XRD, nitrogen physisorption, SEM, TEM, EDX analysis, and cyclic voltammetry technique. In addition, perf...
A Dual-Wavelength Pulsed Laser Processing Platform for a-Si Thin Film Crystallization
Türker, Volkan; Yağcı, Mahmut Emre; Salman, Sarper Haydar; Çınar, Kamil; Eken, Semih Koray; Bek, Alpan (2019-06-01)
Interest in laser crystallization (LC) of silicon (Si) thin films has been on the rise in fabrication of polycrystalline silicon (pc-Si) based thin/ultrathin photovoltaic solar cells and Si based thin film transistors (TFT). Laser based fabrication of device quality pc-Si thin films at room temperature is expected to be a key enabling technology because of its low energy, material and process time budget. Fabrication of high-quality pc-Si thin films without pre-/post-treatment at large is a disruptive techn...
Citation Formats
G. Bektas et al., “Simplified process flow for the fabrication of PERC solar cells with ion implanted emitter,” RENEWABLE ENERGY, vol. 179, pp. 2295–2299, 2021, Accessed: 00, 2021. [Online]. Available: