| Title |
Light-managing Techniques at Front and Rear Interfaces for High Performance Amorphous Silicon Thin Film Solar Cells |
| DOI |
https://doi.org/10.5370/KIEE.2017.66.2.354 |
| Keywords |
Amorphous silicon ; Magnesium fluoride ; Titanium dioxide ; Anti-Reflection ; Rear-reflection |
| Abstract |
We focused on light management technology in amorphous silicon solar cells to suppress increase in absorber thickness for improving power conversion efficiency (PCE). MgF_2 and TiO_2 anti-reflection layers were coated on both sides of Asahi VU (glass/SnO_2:F) substrates, which contributed to increase in PCE from 9.16% to 9.81% at absorber thickness of only 150 nm. Also, we applied very thin MgF_2 as a rear reflector at n-type nanocrystalline silicon oxide/Ag interface to boost photocurrent. By reinforcing rear reflection, we could find the PCE increase from 10.08% up to 10.34% based on thin absorber about 200 nm. |