Surface texturing study with aluminum induced texturing method on soda-lime glass substrates for thin film solar cells

Download

index.pdf

Date

2017

Author

Ünal, Mustafa

Metadata

Show full item record

Item Usage Stats

311
views

129
downloads

It is essential to employ an effective light trapping scheme to decrease the cost of produced solar electricity further in thin film solar cell technologies. There are several methods that can be used for light trapping and aluminum induced texturing (AIT) is one of them. The aim of this thesis study is to obtain highly effective light trapping interface via texturing of glass surface by AIT process. The resultant texture is affected by several parameters such as Al thickness, annealing time and temperature, etching conditions like etchant type, duration etc. In order to obtain high scattering interfaces, different parameters were optimized and studies focusing on understanding of the texturing mechanism has been conducted. In this thesis, it is observed that 50% of the transmitted light can be scattered through textured surface that formed by conventional AIT process. The scattering value can be increased nearly 80% for 400 nm wavelength with newly developed solution that is based on NaOH. In addition, an attempt has been made to model the reaction mechanism during the optimization of the annealing process. The composition of the glass predominantly affecting the resultant texture is also observed. Additionally, results indicate that combination of AIT textures with macro surface structures can result with enhancement in the scattering of transmitted light by nearly 90% for 400 nm wavelength. Following the optimization studies of AIT, the effect of the texturing on the performance of thin film solar cells has been tested by deposition for a-Si:H thin films and a-Si:H solar cells.

Subject Keywords

Solar cells., Thin films., Aluminum., Silicon solar cells.

URI

http://etd.lib.metu.edu.tr/upload/12621126/index.pdf
https://hdl.handle.net/11511/26624

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Selective emitter formation via single step doping through laser patterned mask oxide layer for monocrystalline silicon solar cells Çiftpınar, Emine Hande; Turan, Raşit; Department of Physics (2014) Selective emitter is one of the new approaches for higher efficiency solar cells. Although selective emitter cells could be processed by several different methods such as; etch back process, laser doping, ion implantation, doping paste, a different method based on diffusion through a laser patterned oxide layer was studied in this thesis. Utilization of pattern oxide layer as a diffusion barrier enables to obtain selective emitter profile via single step doping which reduces overall production cost and time...
Contact resistivity analysis of different passivation layers via transmission line method measurements Kökbudak, Gamze; Turan, Raşit; Yerci, Selçuk; Department of Micro and Nanotechnology (2017) Crystalline silicon (c-Si) homojunction solar cells constitute over 90% of the current photovoltaic market. Although the standard solar cells are cost effective and easy to process, their efficiency potential is unfortunately limited. Currently, more innovative cell concepts appeared with their high efficiency potential coupled with low costs. Since the recombination at surfaces and under metal contacts is one of the major obstacles against high conversion efficiencies, surface passivation has primary impor...
Simulation Studies of Hole Textured and Planar Microcrystalline Silicon Solar Cell at Different Zenith Angle Zainab, Sana; Hussain, Shahzad; Altinoluk, Serra H.; Turan, Raşit (2017-09-23) Efficiency of solar cell greatly depends on its interaction with input solar irradiance. For highly efficient solar cell, absorption of input light should be maximum at all angles. Different surface texturing techniques like pyramid texturing, cone texturing, pillar texturing have been used to increase absorption of light in solar cell. Micro-hole Surface texturing is getting popular in absorption of solar radiation at higher zenith angle. In this paper, effect of varying zenith angle on hole textured solar...
Analytical Modelling, Simulation and Comparative Study of Multi-Junction Solar Cells Efficiency Hadjdida, Abdelkader; Bourahla, Mohamed; Ertan, Hulusi Bülent; Bekhti, Mohamed (2018-12-01) Currently, solar energy is promising the primary source of renewable energy that has a great potential to generate power for an extremely low operating cost when compared to already existing power generation technologies. Increasing the efficiency of solar cells is a major goal and the prominent factor in photovoltaic system research. Current triple junction solar cells reach 30% and the next generation will bring 35% in 5 years to peak at 40%. These cells are used in space environment and in terrestrial sy...
Semiconductor-hydrogen technology Bayer, I; Eroğlu, İnci; Turker, L (1996-06-28) Photoelectrochemical (PEG) solar cells are devices that convert solar energy directly into electricity or chemicals. Semiconductor-hydrogen technology, therefore is quite important for stable conversion devices. For production of a chemical fuel semiconductor can serve as a catalyst (1). Electricity producing solar cells are regarded as one of the most important auxiliary equipment for hydrogen production. Moreover, they can be the source for hydrogen. Their design criteria involve investigation of a large ...

Citation Formats

M. Ünal, “Surface texturing study with aluminum induced texturing method on soda-lime glass substrates for thin film solar cells,” M.S. - Master of Science, Middle East Technical University, 2017.