On the indentation-assisted phase engineered Si for solar applications

On the indentation-assisted phase engineered Si for solar applications

The rhombohedral phase of silicon is fabricated over a large-area within the diamond cubic Si wafer using spherical nanoindentation. The ultraviolet and visible spectrum showed a ~50% lower reflectance for the rhombohedral Si compared to the pristine Si. The estimated refractive index of ~6.7 at 630...

Full description

Saved in:
Bibliographic Details
Published in:Scripta materialia Vol. 184; pp. 19 - 23
Main Authors: Mannepalli, Sowjanya, Sagade, Abhay A., Mangalampalli, Kiran S.R.N.
Format: Journal Article
Language:English
Published: Elsevier Ltd 15-07-2020
Subjects:
Nanoindentation
Optical properties
Phase transformations
Rhombohedral silicon
Phase transformations
Optical properties
Nanoindentation
Rhombohedral silicon
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The rhombohedral phase of silicon is fabricated over a large-area within the diamond cubic Si wafer using spherical nanoindentation. The ultraviolet and visible spectrum showed a ~50% lower reflectance for the rhombohedral Si compared to the pristine Si. The estimated refractive index of ~6.7 at 630 nm for the rhombohedral Si is ~35% higher than the diamond cubic Si, which agrees well with the theoretical calculations. The rhombohedral Si with enhanced light absorption ability is utilized as a solar absorber layer for the bare p-n junction Si solar cell and observed to show ~10 times improvement in the photocurrent density. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2020.03.037