Comparison of mechanical and ultrasonic agitation methods for mono c-Si texturing

Date

2016-10-01

Author

BİLGEN, Sedat
ES, FIRAT
Turan, Raşit

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

28
views

0
downloads

Texturing of a mono crystalline Si wafer aims to create light trapping structures to reduce the reflection losses. Being a cheap and efficient process, alkaline texturing of Si wafers is commonly used in all industrial mono crystalline solar cell production lines. However, standard process with potassium hydroxide ( KOH)-based solutions with isopropyl alcohol ( IPA) addition suffers from instability, high material consumption, and nonuniformities in the shape and the distribution of the pyramid structures formed on the Si surface. In this work, we studied the effect of ultrasonic agitation ( UA) during the etching process on the structural, optical, and electrical properties of mono crystalline Si solar cell as a function of process parameters. We have shown that UA improves optical and electrical performance of the cells by forming uniform pyramid structures. In addition, it also helps to lower the material consumption and Si removal from the surface by enabling less process time and temperature. Ultrasonic agitation of the etching solution proves to be a good modification of the wet process steps for the mono crystalline silicon solar cell technology. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Subject Keywords

Mechanical Agitation, Silicon, Texture, Ultrasonic Agitation

URI

https://hdl.handle.net/11511/48669

Journal

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE

DOI

https://doi.org/10.1002/pssa.201600205

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Comparison of Fully Coupled and DecoupledModeling Results of Graphite Ablation In Hypersonic Flows Onay, Oğuz; Eyi, Sinan (2019-09-20) A thermochemical ablation modeling tool is developed for graphite material in air for reactive hypersonic flows. Multi-species and axisymmetric Navier-Stokes equations are solved for the flow field analysis. Arrhennius type of relations are utilized for finite rate reactions and chemical equilibrium is assumed on the eroding wall of graphite material. Total of thirteen species are included in the analysis in which eight of them are the products of the graphitic material ablation. Flow field, surface thermoc...
Development of hole transport transparent conductive electrodes for n-type crystalline silicon solar cells Akdemir, Ozan; Bek, Alpan; İmer, Muhsine Bilge; Department of Micro and Nanotechnology (2018) Conventional transparent conductive electrodes (TCEs) used in crystal silicon (c-Si) solar cells are commonly made of indium tin oxide (ITO) which provides low sheet resistance and high transparency. However, due to indium scarcity, ITO layers increase the fabrication cost; thus, alternative TCEs, such as fluorine-doped tin oxide (FTO), zinc oxide (ZnO), metal nanowires and Oxide/Metal/Oxide (OMO) multilayers, are being investigated. Conventional solar cells also make use of doped layers, to create the junc...
Comparison of Two Alternative Silicon-On-Glass Microfabrication Processes for MEMS Inertial Sensors Torunbalci, M. M.; Tatar, E.; Alper, S. E.; Akın, Tayfun (2011-09-07) This paper presents experimental comparison of a modified silicon-on-glass (M-SOG) process to a previously-reported classical SOG (C-SOG) process based on the use of SOI wafers, yielding a stress free < 111 > silicon structural layer with desired structure thickness. The basic difference between these processes is the sequence of the step at which the silicon microstructures are defined by DRIE, making M-SOG more robust against critical dimension (CD) variations. Overall, M-SOG provides a simple, high yield...
SPECIAL FEATURES OF VIBRATIONAL PROPERTIES OF MIXED-CRYSTALS WITH TLSE STRUCTURE Hasanlı, Nızamı; GONCHAROV, AF; MELNIK, NN; VINOGRADOV, EA (1983-01-01) Polarized IR reflection and Raman scattering spectra have been studied in solid solutions based on TlSe structural type chain single crystals. The results of processing the IR spectra of mixed crystals are analyzed from the standpoint of a random-element-isodisplacements (REI) model extended to the case of many oscillators. In the case of the formation of mixed cells in solid solutions, respective modes have been observed in IR reflection and Raman scattering spectra.
Optomechanical analysis and experimental validation of bonding based prism and mirror mounts in a laser system Ünal, Uğur; Balkan, Raif Tuna; Department of Mechanical Engineering (2012) In this thesis, different optomechanical design and adhesive configurations for mounting mirrors and prisms used in a laser system are investigated. Maintaining stability and strength of optical components of a laser device is difficult especially if the system is to be used in military environment. In order to determine the strength of prism mounts to high acceleration levels, mathematical correlations derived by Yoder are used. By use of these mathematical correlations, safety factor of different prism mo...

Citation Formats

S. BİLGEN, F. ES, and R. Turan, “Comparison of mechanical and ultrasonic agitation methods for mono c-Si texturing,” PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, pp. 2721–2726, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48669.