Laser Sculpting and Processing of Silicon for Photovoltaics

Date

2017-12-07

Author

Bek, Alpan

Metadata

Show full item record

Item Usage Stats

125
views

0
downloads

Direct writing of photonic and fluidic devices in Si by means of laser processing is of great importance as it promisses low-cost, rapid fabrication of Si devices. Although Si microfabrication techniques are well-established and technologically mature, the fabrication time and costs are still of importance as clean room environment, repetitive photomasking, mask aligning, thermal processing steps are typical requirements. Advancements in fiber laser technology has reached a stage such that high average power, nano to femtosecond pulsed lasers are reduced in dimension to about a square meter breadboard area and system costs are reduced to a fraction of a mask aligner. When integrated with galvo-, mechano-, acousto- or piezo-scanners, arbitrary 2D and 3D scan patterns of laser focus can easily be achieved. When the beam qualities are carefully selected, compatible materials can be opto-thermally proccesed in 2D and 3D. In this talk I will present sculpting of crystalline Si by 1550 nm wavelength, ns/fs pulsed fiber lasers. I will show some of our results demonstrating direct writing of holographic phase plates, microelectromechanical systems and buried channels which are fabricated by our novel laser assisted Si sculpting technique. Furthermore I will show slicing of crystal Si thin films out of bulk with the potiential for thin crystal Si solar cell fabrication, and also demonstrate direct written photonic interfaces for improved light management in silicon solar cells.

URI

https://hdl.handle.net/11511/71845
http://med-space.org/irsec17/alpan-bek/
https://pdfslide.net/reader/f/program-2017-international-renewable-and-sustainable-program-2017-international

Conference Name

International Renewable and Sustainable Energy Conference (IRSEC’17) (December 4-7, 2017)

Collections

Department of Physics, Conference / Seminar

Suggestions

OpenMETU
Core

Photoluminescence specroscopy of CdS and GaSe Seyhan, Ayşe; Turan, Raşit; Department of Physics (2003) With the use of photoluminescence (PL) spectroscopy one can able to get a great deal of information about electronic structure and optical processes in semiconductors by the aid of optical characterization. Among various compound semiconductors, Cadmium Sulfide (CdS) and Gallium Selenide (GaSe) are interesting materials for their PL emissions. Particularly, due to its strong anisotropy, investigation of GaSe necessitates new experimental approaches to the PL technique. We have designed, fabricated and used ...
Design Studies of Axial Vircator for High Power Microwave Generation KÜÇÜK, İBRAHİM SEMİH; TİMUR, BÜŞRA; Tanc, Zafer; Demir, Şimşek (2017-09-27) This paper presents design and simulation results of the cylindrical axial virtual cathode oscillator which is frequently used to damage electronic equipment by generating High Power Microwaves (HPM). Simulations are performed in MAGIC Tool Suite which uses FDTD-PIC algorithm to solve particle beam and field interactions. During the design procedure, AK Gap is changed from 5 mm to 12 mm and the scaling law is verified by simulation results. 9 mm AK gap values are selected as the most suitable one when outpu...
Electronic packaging and environmental test and analysis of an emi shielded electronic unit for naval platform Devellioğlu, Yücel; Kayran, Altan; Department of Aerospace Engineering (2008) The scope of this thesis is the design and verification of an electronic packaging of a device which is a subunit of a network system that is designed for combat communication in sheltering ship. According to the project requirements this device is subjected to some environmental and electromagnetic interference tests. This thesis includes design and manufacturing steps as well as vibration, shock and thermal analyses. Electromagnetic interference is examined through the design procedure and total shielding...
Semi-empirical modeling and optimization of metal sputtering processes Çimen, Özge; Kıncal, Serkan; Department of Chemical Engineering (2015) Continuous miniaturization of thin film based electronic devices is the major motivator for research in physical vapor deposition (PVD) applications especially in military and aerospace applications. The challenges in the good quality thin film is the requirement for good mechanical, optical and electrical properties and high thickness uniformity across wafer. In this study, the magnetron sputtering system was investigated which is a commonly used technique to deposit thin films. Deposition and heat transfe...
Vibration analysis of pcbs and electronic components Aytekin, Banu; Özgüven, Hasan Nevzat; Department of Mechanical Engineering (2008) In this thesis, vibration analyses of electronic assemblies that consist of an electronic box, printed circuit board and electronic components are presented. A detailed vibration analysis of a real electronic assembly is performed by finite element methods and vibration tests. Effects of component addition and component modeling are investigated by finite element analysis in detail. Results are compared in order to identify the most efficient, reliable and suitable method depending on the type of problem. E...

Citation Formats

A. Bek, “Laser Sculpting and Processing of Silicon for Photovoltaics,” presented at the International Renewable and Sustainable Energy Conference (IRSEC’17) (December 4-7, 2017), Tangier, Morocco, 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/71845.