Aluminum induced texturing of sandy and prism glasses: Combination of micro/nano texture with macro texture

Ünal, Mustafa
Donerscark, Ergi
Ozkol, Engin
Turan, Raşit
Aluminum induced texturing (AIT) is one of the most promising texturing methods, which can be applied on glass substrates for solar cell applications. Combination of different dimensional structures exhibits the opportunity to achieve enhanced light trapping schemes. Here in this study, float glass and macro textured sandy and prism glasses went through Aluminum induced texturing (AIT) process in order to enhance light management. Surface morphologies were investigated by FE-SEM and optical measurements in terms of transmittance and haze were conducted. Micro or nano sized craters were formed on each type of glass surface successfully by using acidic and basic etching solutions. It was shown for every type of glass that AIT process enhances haze values remarkably. Moreover, it was demonstrated that basic solution is superior to acidic solution in terms of optical properties. In this work, random macro-scale surface texture and imprinted inverted pyramid-like pattern were used to combine AIT textures to attain high haze values. Superior haze was achieved from macro-nano combined texture surface having more scattered light from prism glass substrate with a maximum haze value of 90 %.


Aluminum Induced Glass Texturing (AIT) on Soda-Lime, Borosilicate, Alkali-Free and Silica Glass For Thin Film Solar Cell Applications
Ünal, Mustafa; Günöven, Mete; Tankut, Aydın; Sökmen, İlkay; Turan, Raşit (2015-12-10)
Texturing of glass substrate is an alternative novel method for light trapping, which to enhance the absorbed light by way of increasing the diffused transmittance (haze) so that the amount of absorbed light will be increased instead of texturing transparent conductive oxide (TCO). In this study, aluminum induced texturing (AIT) technique is used to texture different type of glasses to see the effect of the chemical composition on surface morphology and optical properties. Improvement in haze values as well...
Near-unity haze by aluminum induced glass texturing: structural evolution of Al/glass interface and its impact on texturing
Ünal, Mustafa; Canlı, Sedat; Turan, Raşit (2017-09-01)
Aluminum induced texturing (AIT) is an effective method to enhance light trapping in thin film solar cells through texturing the surface of the glass substrate. The topography of the textured glass is closely related to the processes that occur at the Al/glass interface during thermal annealing, which is commonly carried out at temperatures above 500 degrees C. The annealing temperature significantly influences the redox reaction between Al and SiO2, and thus the resultant surface texture. In this study, th...
Efficient Light Trapping in Inverted Nanopyramid Thin Crystalline Silicon Membranes for Solar Cell Applications
MAVROKEFALOS, Anastassios; HAN, Sang Eon; Yerci, Selçuk; Branham, Matthew S.; CHEN, Gang (2012-06-01)
Thin-film crystalline silicon (c-Si) solar cells with light-trapping structures can enhance light absorption within the semiconductor absorber layer and reduce material usage. Here we demonstrate that an inverted nanopyramid light-trapping scheme for c-Si thin films, fabricated at wafer scale via a low-cost wet etching process, significantly enhances absorption within the c-Si layer. A broadband enhancement in absorptance that approaches the Yablo-novitch limit (Yablo-novitch, E. J. Opt. Soc. Am. 1987, 72, ...
Angular Dependence of Solar Cell Parameters in Crystalline Silicon Solar Cells Textured with Periodic Array of Microholes
Altinoluk, Serra; Kumar, Naveen; Çiftpınar, Emine Hande; Demircioglu, O.; Turan, Raşit; Vasileska, Dragica (2020-09-01)
Surface texturing is an indispensable way of increasing absorption in solar cells. In order to properly characterize the effect of texturing, the angular dependence of the incidence light should be addressed. This is particularly important when the actual application where the incidence angle of the sunlight varies during the day is considered. This study presents the angular dependence of solar cell parameters in the case of periodically textured crystalline silicon (c-Si) solar cells with microholes. A st...
Periodic micro hole texturing with metal assisted chemical etching for solar cell applications: dependence of etch rate on orientation
Altınoluk, Hayriye Serra; Çiftpınar, Emine Hande; Demircioğlu, Olgu; Turan, Raşit (2017-01-01)
Surface texturing is an indispensable process for solar cell fabrication. The interaction of the surface with the incoming sunlight is controlled by texturing in such a way that the absorption is maximized through multiple interactions. Wet and dry etching techniques have been used to create textured surfaces on solar cells. Other than standard alkaline texturing used by the industry, metal assisted etching (MAE) appears to be a promising texturing technique with greater potential application for multi-crys...
Citation Formats
M. Ünal, E. Donerscark, E. Ozkol, and R. Turan, “Aluminum induced texturing of sandy and prism glasses: Combination of micro/nano texture with macro texture,” PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, pp. 0–0, 2017, Accessed: 00, 2020. [Online]. Available: