Nano crystalline silicon thin films and grating structures For Solar cells

Enhancement of optical absorption for achieving high efficiencies in thin film silicon solar cells is a challenge task. Herein, we present the use of grating structure for the enhancement of optical absorption. We have made grating structures and same can be integrated in hydrogenated micro/nanocrystalline silicon (mu c/nc-Si: H) thin films based p-i-n solar cells. mu c/nc-Si: H thin films were grown using plasma enhanced chemical vapor deposition method. Grating structures integrated with mu c/nc-Si: H thin film solar cells may enhance the optical path length and reduce the reflection losses and its characteristics can be probed by spectroscopic and microscopic technique with control design and experiment.