Photovoltaic Performance Improvement of Amorphous Si/Crystalline Si Heterostructure Solar Cell by Incorporating Flower-Like Hierarchical Light Trapping Structures
Date Issued
2015
Date
2015
Author(s)
Tsai, Sheng-Han
Abstract
In this study, we proposed the newly hierarchical flower-like structures (FLS) which combined two-dimensional (2-D) periodic cross-dart like structures (CLS) and one-dimensional (1-D) ZnO nanorods (NRs) on the surface of the amorphous silicon (a-Si)/crystalline silicon (c-Si) heterostructure solar cells (SCs) for light trapping to achieve a great average reflectance reduction from 37.41% to 5.1% in the spectral range from 400 nm to 1100 nm, effectively improve the short circuit current (JSC) from 34.32 mA/cm2 to 39.4 mA/cm2 and a better external quantum efficiency (EQE) performance compared to the references. The new concept has been demonstrated and proven for a-Si/c-Si heterostructure SCs application, and the SCs will accomplish higher efficiency once with an optimized fabrication process.
Subjects
electron beam lithography
hydrothermal method
heterostructure solar cell
anti-reflection
ZnO nanorods
SDGs
Type
thesis