∼23% increase in efficiency of 100 nm thin film a-si solar cells using combination of Si/InN and Au nanoparticles

In this work we report 23% increase in efficiency of n-i-p a-Si:H cells using Si, InN and Au nanoparticles. These cells shows an average improvement of 24.54% in short circuit current. The coated cells also reduce the reflection by 2.7% compared to reference cell between 300–800 nm, which indicates light is getting scattered by these nanoparticles. EQE and IQE analysis show that the overall enhancement can be attributed to photon energy downshifting with a reduction in reflectivity.