Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
78453 | Solar Energy Materials and Solar Cells | 2012 | 5 Pages |
Abstract
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/cm2 in nc-Si:H solar cells.
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Authors
Baojie Yan, Guozhen Yue, Laura Sivec, Jessica Owens-Mawson, Jeffrey Yang, Subhendu Guha,