Correlation of texture of Ag/ZnO back reflector and photocurrent in hydrogenated nanocrystalline silicon solar cells
| Autor: | Guozhen Yue, Baojie Yan, Jessica Owens-Mawson, Jeffrey Yang, Subhendu Guha, Laura Sivec |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Photocurrent
Back reflector Materials science Renewable Energy Sustainability and the Environment business.industry Nanocrystalline silicon Light scattering Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention law Solar cell Surface roughness Optoelectronics Texture (crystalline) business Short circuit |
| Zdroj: | Solar Energy Materials and Solar Cells. 104:13-17 |
| ISSN: | 0927-0248 |
| DOI: | 10.1016/j.solmat.2012.04.036 |
| Popis: | We studied the effect of Ag/ZnO back reflectors (BRs) with textured Ag and thin ZnO layers on hydrogenated nanocrystalline silicon (nc-Si:H) solar cell performance. We found that the photocurrent density increases with Ag texture when the surface root-mean-square (RMS) is smaller than 40 nm. The best Ag texture for nc-Si:H cells has an RMS ∼40 nm and lateral feature size ∼500 nm. Increasing the surface roughness further results in increased light scattering, but no additional gain in the photocurrent density is observed. Using the optimized BRs, we achieved a short circuit current density over 30 mA/cm 2 in nc-Si:H solar cells. |
| Databáze: | OpenAIRE |
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