Effects of texturization due to chemical etching and laser on the optical properties of multicrystalline silicon for applications in solar cells
| Autor: | J Mass, D Vera, E Mejia, R Cabanzo, M Manotas |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Solar cells
History Materials science Silicon Scanning electron microscope Analytical chemistry chemistry.chemical_element Reflection Education law.invention chemistry.chemical_compound Hydrofluoric acid Etching (microfabrication) law Nanotechnology Silicon solar cells Spectroscopy Phosphoric acid Optical properties Laser Isotropic etching Computer Science Applications Nanoscience chemistry Etching Polysilicon Scanning electron microscopy |
| Zdroj: | REDICUC-Repositorio CUC Corporación Universidad de la Costa instacron:Corporación Universidad de la Costa |
| Popis: | In this work we carried out the texturization of surfaces of multicrystalline silicon type-p in order to decrease the reflection of light on the surface, using the chemical etching method and then a treatment with laser. In the first method, it was immersed in solutions of HF:HNO3:H2O, HF:HNO3:CH3COOH, HF:HNO3:H3PO4, in the proportion 14:01:05, during 30 seconds, 1, 2 and 3 minutes. Subsequently with a laser (ND:YAG) grids were generated beginning with parallel lines separated 50μm. The samples were analyzed by means of diffuse spectroscopy (UV-VIS) and scanning electron micrograph (SEM) before and after the laser treatment. The lowest result of reflectance obtained by HF:HNO3:H2O during 30 seconds, was of 15.5%. However, after applying the treatment with laser the reflectance increased to 17.27%. On the other hand, the samples treated (30 seconds) with acetic acid and phosphoric acid as diluents gives as a result a decrease in the reflectance values after applying the laser treatment from 21.97% to 17.79% and from 27.73% to 20.03% respectively. The above indicates that in some cases it is possible to decrease the reflectance using jointly the method of chemical etching and then a laser treatment. |
| Databáze: | OpenAIRE |
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