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
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-crystalline solar cell fabrication. It is possible to achieve both random and periodic patterns with MAE which is relatively cheaper than dry plasma etching techniques. In this study, periodic hole patterns with micron sized diameters and periodicity were aimed to be achieved. Etching rate was shown to be strongly dependent on the surface orientation. Uniformly distributed patterns with various diameter and period values were successfully obtained. Fabrication of solar cells on these surface patters were demonstrated. Performance of solar cells was evaluated through parameters like efficiency, open circuit voltage and short circuit current
Journal of Materials Science and Nanotechnology


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...
Light trapping by micro and nano-hole texturing of single-crystalline silicon solar cells
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The efficiency of a solar cell strongly depends on the interaction between the incoming light beam and the surface of the device. Any process enhances light-surface interaction increases absorption probability of the light; thus, improves generated current, in turn. Generated current could be improved either by light trapping or by increased device thickness. Considering fabrication costs and recombination losses, mechanically thin optically thick wafers are being focused on in terms of light trapping prope...
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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 ...
Nickel assisted chemical etching for multi-crystalline Si solar cell texturing: a low cost single step alternative to existing methods
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The texturing of silicon surfaces is a well-known method of reducing the reflection from the surface of crystalline Si solar cell devices. With the utilization of diamond wires in recent advances in wafer slicing technology, surface texturing for the multi-crystalline Si wafers by the traditional acid-based texturing technique has become difficult. Metal-Assisted Etching (MAE) has been shown to be a promising and low-cost alternative to the traditional acid-based isotropic texturing. This paper reports, for...
Characterization and fabrication of silicon thin films for solar cell applications
Karaman, Mehmet; Turan, Raşit; Ünalan, Hüsnü Emrah; Department of Eurasian Studies (2011)
In this thesis study, fabrication and characterization of silicon thin films prepared by magnetron sputtering and electron beam evaporation for solar cell applications have been investigated. In the first part of the study, magnetron sputtering method was used to fabricate thin hydrogenated amorphous silicon (a-Si:H) film on a Si substrate. Some samples were prepared on glass substrate for the basic characterizations like transmission and resistivity. Dark and illuminated I-V characteristics of the silicon ...
Citation Formats
H. S. Altınoluk, E. H. Çiftpınar, O. Demircioğlu, and R. Turan, “Periodic micro hole texturing with metal assisted chemical etching for solar cell applications: dependence of etch rate on orientation,” Journal of Materials Science and Nanotechnology, pp. 1–8, 2017, Accessed: 00, 2021. [Online]. Available: